Four rulers and three pencils cost £2.15
Three rulers and four pencils cost £2.05
Work out the cost of a ruler and the cost of a pencil.

Answers

Answer 1

Answer:

is it 10 cents lesser

Step-by-step explanation:

Answer 2
10 cents less. Hope this helped!

Related Questions

Jasmine invests $1500 in an account that earns an interest rate of 4% compounded
continuously. How much money will she have in 4 years? (round to the hundredth place)

Answers

Answer:

After 4 years she will have $1760.67 in her account.

Step-by-step explanation:

Jasmine invested initial amount = $1500

Rate of interest = 4% compounded continuously

Duration of investment = 4 years

Formula to calculate the final amount when compounded continuously is,

[tex]P(t)=Ie^{rt}[/tex]

where I = Initial amount

r = rate of interest

t = duration of investment

P(t) = Final amount

[tex]P(4)=1500e^{0.04(4)}[/tex]

        = [tex]1500e^{0.16}[/tex]

        = 1760.266

        ≈ $1760.27

Therefore, after 4 years she will have $1760.67 in her account.

Final answer:

To calculate the amount of money Jasmine will have in 4 years with a 4% continuous interest rate, use the formula A = P * e^(rt), where A is the final amount, P is the principal, e is Euler's number, r is the interest rate, and t is the time in years. Evaluating the expression, the result is approximately $1657.29.

Explanation:

To calculate the amount of money Jasmine will have in 4 years, we can use the formula for compound interest. The formula is: A = P * e^(rt), where A is the final amount, P is the principal (initial investment), e is Euler's number (approximately 2.718), r is the interest rate, and t is the time in years. In this case, Jasmine invests $1500 at an interest rate of 4% compounded continuously, so we have A = 1500 * e^(0.04*4). Evaluating this expression, we find that Jasmine will have approximately $1657.29 in 4 years.





What is the area of the right triangle

Answers

Answer:

3.75

Step-by-step explanation:

2.5*1.5=3.75

what is the area of a regular octagon with apothem 2.5 centimeters?

This is for geometry.

Answers

Mutiply that by the sides

Multiply that by sides and there

The diameter of a circle is 16 meters. What is the angle measure of an arc bounding a sector with an area eight pi square meters? (give the exact answer in simplest form)

Answers

Answer: 45°

Step-by-step explanation:

Diameter= 16m

Radius= 16/2 = 8m

The area of the circle= πr^2

= π8^2

= 64π square metres.

An area of 8π square metres is also 1/8 of the total area, therefore the arc must be 1/8 of the circumference.

The circumference = 2πr = 16π,

This gives us an arc length of 2π metres.

But since we are looking for the the angle.

In degrees: 360/8 = 45°

The angle of the sector is 45 degrees.

To understand the calculations, check below

Sector of circle:

The radius of circle is [tex]\frac{16}{2} =8cm[/tex]

The area of circle is,

                 [tex]Area=\pi*8^{2} \\\\Area=64 \pi[/tex]

Area of sector [tex]=8\pi[/tex]

Angle of sector,

                       [tex]=\frac{8\pi}{64\pi} *360\\\\=\frac{360}{8}=45 degrees[/tex]

The angle of sector is 45 degrees.

Learn more about the sector angle here:

https://brainly.com/question/22972014

Select the correct answer.
The zeros of a quadratic function are 6 and -4. Which of these choices could be the function?
A.
f(x) = (x + 6)(x − 4)
B.
f(x) = (x + 6)(x + 4)
C.
f(x) = (x − 6)(x + 4)
D.
f(x) = (x − 6)(x − 4)

Answers

Answer:

[tex]\huge\boxed{C.\ f(x)=(x-6)(x+4)}[/tex]

Step-by-step explanation:

[tex]\text{If}\ x_1\ \text{and}\ x_2\ \text{are the zeros of quadratic function}\ f(x)=ax^2+bx+c,\\\\\text{then we can convert}\ f(x)\ \text{to the form}\ f(x)=a(x-x_1)(x-x_2).\\\\\text{We have the zeros}\ x_1=6\ \text{and}\ x_2=-4.\\\\\text{Substitute:}\\\\f(x)=a(x-6)(x-(-4))=a(x-6)(x+4)\\\\\text{For}\ a=1\ \text{we have answer}\ C.\ f(x)=(x-6)(x+4)[/tex]

h(t)= -16t^2 + 87t. find the average rate of change of the height of the ball from 2 to 4.5 seconds​

Answers

Answer:

  -17 ft/s

Step-by-step explanation:

The average rate of change is the difference in height on the interval, divided by the difference in time.

  m = (h(4.5) -h(2))/(4.5 -2) . . . . . . . . definition of rate of change on [2, 4.5]

  h(4.5) = (-16·4.5 +87)(4.5) = 67.5

  h(2) = (-16·2 +87)(2) = 110

Then ...

  m = (67.5 -110)/(2.5) = -17

The average rate of change on the interval from 2 to 4.5 seconds is -17 ft/s.

_____

Check

The slope of the curve is given by its derivative:

  h'(t) = -32t +87

The midpoint of the interval is (2+4.5)/2 = 3.25.

The slope at the midpoint is ...

  h'(3.25) = -32(3.25) +87 = -17 . . . . average rate of change on [2, 4.5]

For a quadratic function. the average rate of change on an interval is the slope of the function at the midpoint of the interval. This calculation confirms that.

Final answer:

The average rate of change of the height of a ball described by the function h(t) = -16t^2 + 87t from 2 to 4.5 seconds is calculated using the difference in height values at these points divided by the difference in time, resulting in -17 feet/second.

Explanation:

The student asks to find the average rate of change of the height of a ball, given the function h(t) = -16t2 + 87t, from t = 2 seconds to t = 4.5 seconds. To find the average rate of change, we will use the following formula:

Average Rate of Change = (h(t2) - h(t1)) / (t2 - t1)

First, we calculate h(2) and h(4.5):

h(2) = -16(2)2 + 87(2) = -64 + 174 = 110

h(4.5) = -16(4.5)2 + 87(4.5) = -324 + 391.5 = 67.5

Plugging these values into the formula:

Average Rate of Change = (67.5 - 110) / (4.5 - 2) = -42.5 / 2.5 = -17

The average rate of change of the height of the ball from 2 to 4.5 seconds is -17 feet/second.

What is the measure of θ in radians?
In the diagram, θ is a central angle.

Answers

Answer:

5

Step-by-step explanation:

Arc length = r × theta

15 = 3 × theta

theta = 15/3

theta = 5 radians

5

Answer:

Step-by-step explanation:

Which answer represents the range of the logarithmic function given below? f(x) = log0.3 x

Answers

Domain of the function F(x) = log 0.3 x is :

All Real Numbers greater than zero.

So the right answer is :

D. All real numbers

Answer:All real numbers

Step-by-step explanation:

A

P

E

X

What is the value of p in the equation of 2(3p -4) = 10

Answers

Answer:

p=3

Step-by-step explanation:

2(3p -4) = 10

6p-8=10 (distribute the 2)

6p=18 (add 8 to both sides)

p=3 (divide 3 from both sides)

Answer:

p = 3

Step-by-step explanation:

2 • (3p - 4) -  10  = 0

Use the graph to identify the independent and the
dependent variable. Check all that apply.
O
The two variables are Eli and 5.
The two variables are meters and seconds.
0 Meters are graphed on the x-axis.
Meters are graphed on the y-axis.
0 Seconds is the independent variable.
0 Seconds is the dependent variable.
I need help

Answers

Answer:

The two variables are meters and seconds.Meters are graphed on the y-axis.Seconds is the independent variable.

Step-by-step explanation:

The problem is about meters and seconds, because the graph shows the relation of the distance and the time used by an object.

It's important to know that the time doesn't depends on anything, that means, it's always an independent variable. And the distance always depends on the time, because depending on the time you are moving, you will cover more distance.

Therefore, the answers are:

The two variables are meters and seconds.Meters are graphed on the y-axis.Seconds is the independent variable.

Answer:

B) The two variables are meters and seconds.

D) Meters are graphed on the y-axis.

E) Seconds is the independent variable.

Step-by-step explanation:

A random survey shows that 14 out of 21 students plan to vote for Jacob for class president. Which is the best prediction of the total number of votes Jacob will receive if 180 students vote?
A.35
B.90
C.120
D.173

Answers

Answer:

C. 120 Votes

Step-by-step explanation:

14/21 will get you 66.6. Taking that number and multiplying it by the 180 total students will end you with 120 which is your answer.

What is Pythagorean Therom and how is it used?

Answers

Answer:

The Pythagorean Theorem in a^2 + b ^2 = c^2

It is used to solve for one side of a right triangle (any triangle where one angle is 90 degrees). Most of the times it is used to solve for the hypotenuse, which is represented by c. A and B represent the other sides of the triangle.

The Pythagorean Theorem also states that the sum of the squares of the lengths of the legs of a right triangle is equal to the square of the length of the hypotenuse.

In other words, for the triangle shown below, a² + b² = c².

In the image below, I have drawn a triangle on my whiteboard.

In the triangle that is shown below, the legs, a and b, are the perpendicular sides of the right triangle and the hypotenuse, c, is the side opposite the right angle.

This only applies to right triangles!

You can use this theorem to find out if a triangle is an acute triangle, a right triangle, or even an obtuse triangle.

anyone know this ?! help pls asap

Answers

(-7)² ➡️ 49

(⅔)² ➡️ ⁴/6

- /100 ➡️ -10

/.81 ➡️ .9

I need some help with middle school math

Answers

Answer:

1/8

Step-by-step explain i think it;s your answer

Answer:

24

Step-by-step explanation:

- Alisha had 3/4 yards of ribbon. She wanted to use it to decorate
three picture frames. If she uses one-third of the ribbon on each
frame, how many yards of ribbon will she use for one frame?​

Answers

Answer:

1/4 yards

Step-by-step explanation:

3/4 is the total. Divide the total by 3 to get the answer.

If you were on the moon, your weight would only be 0.17 of your weight on Earth. If you weigh 195.75 pounds on Earth, how much would you weigh on the moon?

Answers

Answer:

32.49

Step-by-step explanation:

The weight of the person on the moon is 33.2775 pounds.

Given that, if you were on the moon, your weight would only be 0.17 of your weight on Earth.

What is the unitary method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Here, weight on earth is 195.75 pounds

Now, weight on the moon

= 0.17×195.75

= 33.2775 pounds

Hence, the weight of the person on the moon is 33.2775 pounds.

To learn more about the unitary method visit:

brainly.com/question/22056199.

#SPJ5

Which value of x is the solution of: 5x - 1 = 2x + 20?

A) 19/7
B) 19/3
C) 3
D) 4

Answers

Answer:the correct answer is 7

Step-by-step explanation:

Find the solution set of the inequality −4x+35>2

Answers

Answer:

x < 37/4

Step-by-step explanation:

−4x+35>2

Subtract 35 from each side

−4x+35-35>2-35

-4x > -37

Divide each side by -4. remembering to flip the inequality

-4x/-4 < -37/-4

x < 37/4

sin^2x + sin x = 0
Find all solutions to the equation

Answers

Factor out sin x
Sin x (sinx +1) = 0
Use the zero product property
Sin x=0
Sin x+1 = 0

Solutions
x= 0 degrees
x= 270 or -90 degrees

Can some one help me please with this questions

Answers

20 x + 15 = 10

20 x = - 5

x = -5/20 = -1/4

Answer: -1/4

5x - 5 = 15

5x = 20

x = 20/5 = 4

Answer: 4

n + 14 = 72

Answer: 14 + n = 72, first choice

Find the midpoint of A and B where A has coordinates (2,4) and B has coordinates (-3,-9)

Answers

(2+-3/2),(4+-9/2) =
(-1/2,-5/2)


Explain the difference between the superlative and comparative degree.

Answers

Answer:

The superlative degree compares more than two things to show which has the least or greatest degree of the quality.comparative degree is  used when just comparing two things.

Step-by-step explanation:

Final answer:

The comparative degree is used to compare two items, while the superlative degree is used to compare three or more. Comparatives typically end in -er, while superlatives end in -est, except in cases of adjectives with more syllables where 'more' and 'most' are used respectively. Absolute adjectives generally do not have comparative or superlative forms.

Explanation:

Difference Between the Comparative and Superlative Degree

The comparative and superlative degrees are used to make comparisons between nouns based on some attributes described by adjectives or adverbs. The comparative degree is used when comparing two items, while the superlative degree is used when comparing three or more items. Comparative adjectives often end in -er, and superlative adjectives often end in -est. For example, the adjective 'hot' becomes 'hotter' in the comparative form and 'hottest' in the superlative form.

For adjectives of three or more syllables, and some two-syllable adjectives, the comparative is formed by adding the word 'more' before the adjective, and the superlative is formed with 'most'. For instance, 'famous' becomes 'more famous' and 'most famous' in comparative and superlative forms respectively. Some adjectives and adverbs are irregular and do not follow these standard patterns of formation. Furthermore, adjectives that describe absolute qualities, such as 'dead' or 'pregnant', typically do not have comparative or superlative forms.

It is important to never use both types of comparison for the same adjective, as in 'most hardest'. The correct form would be 'hardest', without the 'most'. Also, it's useful to know that adjectives imply a scale of degrees, and comparative forms indicate one item's position on that scale in relation to another, while superlatives indicate the extreme ends of that scale.

what does this graph represent....LINEAR FUNCTION, EXPONENTIAL FUNCTION, OR (neither)

Answers

Answer:

LINEAR function  constant slope = 2

Step-by-step explanation:

We see points  (-3, -11),  (-2, -9),  (-1, -7),  (1, -3) , (2, -1)

slope:   m = (-9 - -11)/(-2 - -3) = 2/1

m = (-7 - -9)/(-1 - -2) = 2/1

m = (-3 - - 7)/(1 - -1) = 4/2 = 2

m = (-1 - -3)/(2 - 1) = 2/1 = 2

does the infinite geometric series diverge or converge? Explain.

1/5 + 1/10 + 1/20 + 1/40

A) it diverges it has a sum

B) it diverges doesn’t have a sum

C) it converges it has a sum

D) it converges doesn’t have a sum

Answers

Answer:

The other guy is correct except for question five.

If your question is "Use summation notation to write the series 2+4+6+8+... for 10 terms. In each of these images, the lower limit of the summation notation is either "n=1" or "n=0".

The answer should be 10∑n=1 (2n) not (n+2)

The correct option is (C) it converges it has a sum.

Infinite Geometric Series:

An infinite geometric series is an infinite series whose successive terms have a common ratio. This is easily proven by using an infinite geometric series. This series would have no last term. The general form of the infinite geometric series is[tex]a + a r + a r^ 2 + a r ^3 +...[/tex]+ ..., where [tex]a[/tex] is the first term and [tex]r[/tex] is the common ratio.

We can find the sum of all finite geometric series.

Given series can be written as;

[tex]\frac{1}{5}+\frac{1}{10}+\frac{1}{20}+\frac{1}{40}+..... \\ a=\frac{1}{5} \\ r=\frac{1}{2} \\ \Rightarrow \frac{a}{1-r}=\frac{1/5}{1-1/2} \\[/tex]

           [tex]=\frac{2}{5}[/tex]

Therefore, [tex]\frac{2}{5}[/tex] is infinite, so it converges.

Learn more about the topic Infinite Geometric Series: https://brainly.com/question/12213123

What is the measure of RMN?

117

[Not drawn to scale]

27 degrees

63 degrees

117 degrees

163 degrees

Answers

Answer:63

Step-by-step explanation:

The weather report stated there is a chance of 2/3 rain on Friday. It is more likely to rain on Saturday than on Friday, but not certain. What is a possible probability of rain on Saturday?

Answers

3/4 chance of rain for saturday

Answer:

3/4 chance of rain for saturday

Step-by-step explanation:

Which of the following graphs has a slope of
-5 and a y-intercept of 4?

Answers

Answer: B.

Step-by-step explanation:

I hope this helps!

Please help.

v= u + at

u = 3
a = -2
t = 1/4

Work out the value of v.

Answers

v = 2.5 or 5/2

3 + 2 x - 1/4 = 5/2

5/2 = 2.5

Yes I agree with the person above

Which types of graphs are most appropriate for displaying categorical data? Check all of the boxes that apply. bar graphs histograms pie charts or circle graphs stem-and-leaf plots

Answers

Answer: Bar graphs, pie charts or circle graphs

Step-by-step explanation: for it right

Pie charts or circle graphs and bar charts are the most appropriate displaying for categorical variables.

What is a graph?

A graph is used to provide a pictorial representation or diagram so as to represents data in an orderly way. Examples of graphs are histogram, box plot, pie chart, dot plot.

Pie charts or circle graphs and bar charts are the most appropriate displaying for categorical variables.

Find out more on graph at: brainly.com/question/14323743

Suggest a universal set for the sets given below:
{ odd number less than 8 }, {prime number less than 8} and {even number between 3 and 8}

Answers

Step-by-step explanation:

A = ( 1 3 5 7) B = (2 3 5 7) C = (4 6)

U = ( 1 2 3 4 5 6 7)

Other Questions
3. Why are alternative sources of energy better for the environment than burningcoal?A. It produces more pollutionB. It is renewableC. It contributes to global warmingD. It leads to the burning of more fossil fuels Motor neuron degeneration occurs in several diseases and leads to loss of muscle control. One form of motor neuron degeneration was found to have defects in retrograde transport (backward transport to cell body, in blue below) that were caused by mutations in a gene that codes for a particular protein.What protein, when mutated would inhibit backward, but not outward. transport along axon microtubules? Choose one A. myosin B. kinecin C. dnein D. tubulin The data to represent average test scores for a class of 16 students includes an outlier value of 91. If the outlier is included, then the mean is 80. Which statement is always true about the new data when the outlier is removed?The median would decrease. The median would increase. The mean would decrease. The mean would increase. Which equation is true if the perimeter of the rectangle is 60?X + 53x - 2OOOOX+5= 3x-2(x+5)+(3x-2) = 602(x+5)+2(3x-2) = 60O 2(3x-2)-2(x+5) = 60 3.Can we multiply a 2x3 matrix by a 3x2 matrix? If yes, what dimensions will the product matrix AB have ? Which points are on the graph of the equation 3-6x+2y=-5 Whats the correct answer for this? A type of relationship that shows descriptions or directions is called: a. Chronological c. Spatial b. Cause and Effect d. Comparison and Contrast Why does the the diffusion capacitance fall off at high frequencies?1. At high frequencies the dopants are vibrated across the metallurgical junction and the doping profiles smooths out. 2. Since Gd increases with frequency Cd must decrease with frequency and the parallel combination of Gd and Cd is constant. 3. When the applied bias frequency is higher than the speed which the majority carriers can respond the diode starts to disappear electrically. 4. It takes time to store and remove minority charge, so when the frequency is higher than the inverse of the minority carrier lifetime the carriers can't respond as well. Savings accounts typically offer more interest than whattype of account?A.)Retirement accountB.)Money market accountC.)Checking accountD.)None of the above If sales tax is 7.5%, what is the final cost of an $18 sweater after taxes are applied? (Round to the nearest cent) Is 80 a multiple of 10 why or why not Each of six jars contains the same number of candies. Alice moves half of the candies from the first jar to the second jar. Then Boris moves half of the candies from the second jar to the third jar. Then Clara moves half of the candies from the third jar to the fourth jar. Then Dara moves half of the candies from the fourth jar to the fifth. Finally, Ed moves half of the candies from the fifth jar to the sixth jar. At the end, 30 candies are in the fourth jar. How many candies are now in the sixth jar? What quadrants is csc less than 0. what is the median 3 2 -9 9 -3 -4 -1 The managers of a pension fund have invested $2.5 million in U.S. government certificates of deposit (CDs) that pay interest at the rate of 2.1%/year compounded semiannually over a period of 20 years. At the end of this period, how much will the investment be worth? (Round your answer to four decimal places.) Suppose that 20% of the residents in a certain state support an increase in the property tax. An opinion poll will randomly sample 900 state residents and will then compute the proportion in the sample that support a property tax increase. How likely is the resulting sample proportion to be within .02 of the true proportion (i.e., between .18 and .22)? (Hint: Use the sampling distribution of the sample proportion in this case.) What is the volume of this rectangular pyramid?3 yd5 yd5 ydcubic yards Andre drew a plan of a courtyard at a scale of 1 to 60. On his drawing, one side of the courtyard is 2.75 inches. if Andre made another courtyard scale drawing at a scale of 1 to 12, would this drawing be smaller or larger than the first drawing? explain your reasoning What was the largest single migration in American history?A. forty-niners to CaliforniaB. Mormons to UtahC. mountain men to OregonD. traders to Mexico