Answer:
-10 and 4 are the answer
Step-by-step explanation:
-10 times 4 is -40 and
-10 plus 4 is -6
Hope this helps;)
What is (2x+2)-(3x+11)
Find the median:
3, 5, 7, 4, 3,1
Answer:
3.5
Step-by-step explanation:
The median is the middle number when the numbers are aligned from smallest to largest
3, 5, 7, 4, 3,1
1,3, 3, 4 ,5 ,7
The middle is between the 3 and the 4 so average the 3 and the 3
(3+4)/2 = 7/2 = 3.5
The median is 3.5
Ryan has $0.75 worth of pennies and nickels. He has 3 more nickels than pennies. Determine the number of pennies and the number of nickels that Ryan has.
9514 1404 393
Answer:
10 pennies13 nickelsStep-by-step explanation:
Let n represent the number of nickels Ryan has. Then the number of pennies is n-3, and his coins have a value (in cents) of ...
5n +1(n -3) = 75
6n = 78 . . . . . . . . . collect terms, add 3
n = 13 . . . . . . . . . . number of nickels Ryan has
n-3 = 10 . . . . . . . . number of pennies Ryan has
Ryan has 10 pennies and 13 nickels.
Ryan has 10 pennies and 13 nickels.
What is Algebra?Algebra is the part of mathematics that helps represent problems or situations in the form of mathematical expressions.
Given:
Ryan has $0.75 worth of pennies and nickels.
Let x be the number of nickels Ryan has.
So, the number of pennies be x-3,
Then,
5x +1(x -3) = 75
6x = 78
x = 13
and, x-3 = 10
Hence, Ryan has 10 pennies and 13 nickels.
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Help solve this please
Answer:
Step-by-step explanation:
you add the balance then you will get the balance for u answer and if i didn't help u i'm sorry
Please help me ASAP
Answer:
B
Step-by-step explanation:
Please mark me brainiest
An internet company randomly selected 50 of its customers and asked them how many hours per week they use the internet. Of those surveyed, 28 use the internet more than 15 hours per week. Based on the data, if the company has 800 subscribers, how many use more than 15 hours per week?
Answer:
Number of person use more than 15 hours per week from 800 subscribers = 448
Step-by-step explanation:
Given:
Total number of sample = 50
Result = 28 Person use more than 15 hours per week
Find:
How many people use more than 15 hours per week
Computation:
⇒ Probability of Person use internet more than 15 hours per week = 28 / 50
⇒Probability of Person use internet more than 15 hours per week = 0.56
⇒Number of person use more than 15 hours per week from 800 subscribers = 800 × Probability of Person use internet more than 15 hours per week
⇒Number of person use more than 15 hours per week from 800 subscribers = 800 × 0.56
⇒ Number of person use more than 15 hours per week from 800 subscribers = 448
Answer:
448
Step-by-step explanation:
Since 28/50 customers use the internet more than 15 hours per week. 28/50 is our fraction. So we do 28/50x800 which gives you 448.
Easy Question, Easy Points
Topic: Volume
Focus on question 12
Answer:
The air is .6m^3
Step-by-step explanation:
The volume of a cube is
V = s^3 where s is the side length
The volume of the tank is
V = 1^3 = 1 m^3
The volume of the water is 1 by 1 by .4
V = l*w*h
= 1 *1*.4
= .4 m^3
The difference must be filled by air
1- .4 = .6 m^3
The air is .6m^3
Answer:
0.4 m³
Step-by-step explanation:
Volume of air:
Base area × height
1 × 1 × 0.4
0.4 m³
Which graph represents a line with a slop of -2/3 and a y-intercept equal to that of the line y =2/x -2
Answer:
y = -2/3x - 2
Step-by-step explanation:
The slope of this line is -2/3 and the y-intercept is -2.
If this answer is correct, please make me Brainliest!
Graph: f(x) = (1/4)
Step 1: Calculate the initial value of the function.
f(0) =
Answer:
Step-by-step explanation:
its 1
The given function f(x) = (1/4)ˣ, the initial value of the function when x is substituted in the function is , 1
What are functions?Function is a relation between a set of inputs and a set of outputs which are permissible. In a function, for particular values of x we will get only a single image in y. It is denoted by f(x).
Vertical line test:-
Whenever we want to check whether a given expression is a function or not we can apply a vertical line test, in this test we check for a single image of x , we are getting a single image or more.
If we get more images then it will not be a function.
For example, let us take, y² = 4ax
y = ±√4ax
For single value of x we get two values of y
Hence, it will not be a function.
Given that,
Graph of function f(x) = (1/4)ˣ
when value of x is substituted in given function,
f(0) = (1/4)⁰
f(0) = 1
So, the initial value of the function is 1
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racehorse weighs 470 kilograms. How much does it weigh in grams
Answer: 470000 grams
Step-by-step explanation:
1 kilogram =1000 grams
470×1000=470000
Answer:
it weighs 470000 grams ...
Step-by-step explanation:
1 kg = 1000
470 kg = 470×1000 => 470000
Whatttttt doesssss x equallllllll?
Answer: cos30
Step-by-step explanation:
Cos(angle) = adjacent leg/hypotenuse
Cos(x) = 4/21
X = arccos4/21
X = 79.0194 degrees
Round the answer as needed.
What is the measure of angle 4?
Answer:
45 degrees
Step-by-step explanation:
∠1 and ∠4 are on a straight line. Therefore, they are supplementary and add to 180 degrees.
∠1+∠4=180
We know that the m∠1 is 135 degrees. We can substitute 135 in for ∠1.
135+∠4=180
Now we have to solve for ∠4. To do this, we need to get ∠4 by itself. 135 is being added on to ∠4. To undo this, subtract 135 from both sides, because subtraction is the opposite of addition.
135-135+∠4=180-135
∠4=180-135
∠4=45
The measure of ∠4 is 45 degrees.
What us the surface area of the triangular prism
Answer:
12 inches
Step-by-step explanation:
Because surface area is like a box,it would be the top.
Answer:
A ≈ 374.81
Step-by-step explanation:
SA = bh + (s1 + s2 + s3)H is the formula for SA of a triangular prism. if you plug in all of the digets thats what you get.
Determine the volume of each right prism
A- area of base = 6cm2, height = 4cm
B- Area of base = 20cm, height =2cm
C- Height = 10cm, area of base = 15cm
Step-by-step explanation:
A:24
B:40
C:150
Hope this helped if I was correct
the product of twice a number and four. *
Answer: 20
Step-by-step explanation:
8 times 2 = 16
16 plus 4 = 20
Answer:
2x * 4
Step-by-step explanation:
2.
Write the ratio of passing scores to all 500 testing scores if there were 25 failing
scores.
Answer:
Simply subtract the fail rate from 100; the resulting number is the pass rate. So, if you know that 6 percent of students failed, you would subtract: 100 - 6 = 94 percent is the pass rate for the test.
Step-by-step explanation:
Answer:
19:20
Step-by-step explanation:
500 test scores
25 failing
500 -25 = 475 = passing scores
passing:all scores
475: 500
Divide each side by 25
475/25:500/25
19:20
Find the arc length of a semicircle
Answer:
28.26
Step-by-step explanation:
What is 800+ 22 rounded to the nearest hundred?
788
800
822
900
Answer:
800
Step-by-step explanation:
because if you round 822 to the nearest hundred you would 800 since its the closest one
Answer:
822 rounded to the nearest hundred is: 800 When rounding to the nearest hundred, like we did with 822 above, We round the number up to the nearest hundred if the last two digits in the number are 50 or above.
Step-by-step explanation:
Please help :( Orlando is making a design for a logo. He begins with a square measuring 20 inches on a side. The second square has a side length of 16 inches, and the third square has a side length of 12.8 inches. Which square will be the first square with a side length of less than 8 inches?
A. seventh square
B. fourth square
C. fifth square
D. sixth square
Answer:D
Step-by-step explanation:
1st --- 20
2nd -- 16
3rd -- 12.8
4th -- 10.24
5th -- 8.192
6th -- 6.5536
The first square with a side length of less than 8 inches is option (D) sixth square and it's side length is 6.5536 inches.
What is a word problem?A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.
For the given situation,
Orlando is making a design for a logo.
The first square measures = 20 inches
The second square measures = [tex](20-4 ) = 16 inches[/tex]
The third square measures = [tex]( 16-(4)(0.8))=16-3.2[/tex]
⇒ [tex]12.8 inches[/tex]
The fourth square measures = [tex]12-(3.2)(0.8)=12-2.56[/tex]
⇒ [tex]10.28 inches[/tex]
The fifth square measures = [tex]10.28-(2.56)(0.8) =10.28-2.048[/tex]
⇒ [tex]8.192[/tex]
The sixth square measures = [tex]8.092-(2.048)(0.8)=8.092-1.6384[/tex]
⇒ [tex]6.5536[/tex]
Hence we can conclude that the first square with a side length of less than 8 inches is option (D) sixth square and it's side length is 6.5536 inches.
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Suppose a parabola has vertex (–8, –7) and also passes through the point (–7, –4). Write the equation of the parabola in vertex form.
a.y=(x+8)^2-7
b.y=3(x-8)^2-7
c.y=3(x+8)^2-7
d.y=3(x+8)^2+7
We have been given that a parabola has vertex [tex](-8,-7)[/tex] and also passes through the point [tex](-7,-4)[/tex]. We are asked to write the equation of the parabola in vertex form.
We know that vertex form of parabola in format [tex]y=a(x-h)^2+k[/tex], where point (h,k) represents vertex of parabola.
Let us write equation of parabola using our given information as:
[tex]y=a(x-(-8))^2-7[/tex]
[tex]y=a(x+8)^2-7[/tex]
Now we will substitute the coordinates of point [tex](-7,-4)[/tex] to solve for a as:
[tex]-4=a(-7+8)^2-7[/tex]
[tex]-4=a(1)^2-7[/tex]
[tex]-4=a-7[/tex]
[tex]-4+7=a-7+7[/tex]
[tex]3=a[/tex]
Therefore, our required equation would be [tex]y=3(x+8)^2-7[/tex] and option 'c' is the correct choice.
true or false:
In naming arcs, ABC is equivalent to AC
Answer:
True
Step-by-step explanation:
I have a picture of my notes right here
what is the factor y^2-11y+18
Answer:
(y-9)(y-2)
Step-by-step explanation:
-9 and -2 add up to -11 and when multiplied they make a positive 18
Answer:
Step-by-step explanation:
Sum = -11
Product = +18
Factors are : 9 , 2
y² - 11y + 18 = y² - 9y -2y + (-9)*(-2)
=y(y - 9) -2(y - 9)
= (y - 9)(y - 2)
Solve for b.
12 = -18 + 6b
Answer:
B=5
Step-by-step explanation:
mark me brainliest please
Answer:
b = 5
Step-by-step explanation:
12 = -18 + 6b
30 = 6b
5 = b
Please help me now plz
I will mark you brainliest
Answer:
16
Step-by-step explanation:
Since this is a right triangle, we can use trig identities
sin theta = opp / hyp
sin 30 = 8 / NO
Multiply each side by NO
NO sin 30 = 8
Divide each side by sin 30
NO = 8 /sin 30
NO = 8 / 1/2
NO = 16
the floor of the truck is 36 inches high and the bottom of the ramp needs to be 323 inches from the truck. how long does Abraham need to make the ramp?
Answer:
About 324.96 inches
Step-by-step explanation:
Pythagorean Triangle Formula: a²+b²=c²
36²+323²=c²
1296+104329=c²
c²=105,598
Square root both sides
c=[tex]\sqrt{105,598}[/tex]
c=324.958459 inches≈324.96 inches
Suppose ACT Reading scores are normally distributed with a mean of 21.4 and a standard deviation of 5.9. A university plans to award scholarships to students whose scores are in the top 9%. What is the minimum score required for the scholarship? Round your answer to the nearest tenth, if necessary.
To find the minimum score required for the scholarship, we need to find the z-score that corresponds to the top 9% of the normal distribution.
Explanation:To find the minimum score required for the scholarship, we need to find the z-score that corresponds to the top 9% of the normal distribution.
Step 1: Convert the top 9% to a z-score using the standard normal distribution table.
Step 2: Use the z-score formula to find the corresponding ACT Reading score.
Step 3: Round the answer to the nearest tenth.
The minimum score required for the scholarship is the score that corresponds to the z-score found in Step 1.
To be in the top 9% for ACT Reading scores, a student needs a minimum score of approximately 29.3.
To determine the minimum ACT Reading score required for the top 9%, we need to find the z-score that corresponds to the 91st percentile in a standard normal distribution. According to z-tables, the z-score for the 91st percentile is approximately 1.34.
Next, we use the z-score formula to find the required ACT score:Formula:⇒ Z = (X - μ) ÷ σ
Given values:⇒ Mean (μ) = 21.4,
⇒ Standard Deviation (σ) = 5.9,
⇒ Z = 1.34
Solve for X:⇒ X = Z × σ + μ
⇒ 1.34 × 5.9 + 21.4 = 7.906 + 21.4
≈ 29.3
Therefore, to be in the top 9%, the minimum ACT Reading score required is approximately 29.3.
Seventy-five 6 th-grade students chose to watch a movie on the last day of school. This is 25% of the 6 th-grade class. How many total students are in the 6 th grade?
The total number of students in the 6th grade is 300.
What is a percentage?A percentage is a number or ratio expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100.
For the given situation,
25% of the 6th-grade class students is 75
Let x be the total number of students, say 100%.
⇒ [tex]25\%=\frac{1}{4}[/tex]
Here, 1 part is 25% then 4 parts are 100%
Thus 1 part = 75, then
⇒ [tex]4 parts = 4(75)[/tex]
⇒ [tex]4 parts = 300[/tex]
Hence we can conclude that the total number of students in the 6th grade is 300.
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Which shape could be thought of as being created by stacking congruent polygons?
cone
rectangular prism
square pyramid
triangular pyramid
Answer:
its B
Step-by-step explanation:
Final answer:
A rectangular prism can be thought of as being created by stacking congruent polygons, as its faces are identical rectangles or squares. Pyramids, on the other hand, have a consistent base but their side faces are triangles that converge, not congruent polygons. A cone does not consist of stacking polygons since it has a continuous curved surface.
Explanation:
The shape that could be thought of as being created by stacking congruent polygons is the rectangular prism. When you stack identical polygons directly on top of each other, you are essentially creating the sides of a prism. Rectangular prisms are made up of congruent rectangles (or squares if it's a cube). Each face is identical, and they are stacked in a way that the height of the prism adds dimensionality but does not change the consistency of each face being a congruent polygon.
In contrast, when you consider shapes like pyramids, they do not have congruent faces all around. For example, a square pyramid has a square base, but the side faces are triangles that converge at a point. Similarly, a triangular pyramid (also known as a tetrahedron) also does not have congruent faces all around since it consists of equilateral triangles that meet at a point. The cone is a special case where the base is a circle (an infinite number of infinitesimally small sides), and the surface is a continuously curved shape, so it does not consist of stacking congruent polygons.
A. David notices that the shape of the Ligersville toxic dumpsite is somewhat like a triangle. He claims that he can approximate the perimeter of the dumpsite without doing any extra measurements. What assumption about side AB of the dumpsite would David need to make in order to justify his claim?
B. Based on the assumption in part A, determine the approximate length of side AB of the dumpsite. Explain your reasoning in at least two sentences.
C. Determine the approximate perimeter of the Ligersville toxic dumpsite. Explain your reasoning.
Answer:
A) AB is approximately straight line
B) 40 yards
C) 96 years
Step-by-step explanation:
A) For the toxic dump site to be traingular, AB must be a straight line to form hypotneuse of the traingle and that the traingle is right angle triangle
B) assuming a right angle triangle, using pythagoras theorem
H²=P²+B²
H²= 24²+ 32²
H= 40 yards
C) Parameter= 24+32+40=96 yards
Answer:
A. Side AB is approximately straight and forms the hypotenuse side of the right triangle
B. 40 yards
C. 96 yards
Step-by-step explanation:
A. The assumption about the curved side AB that David would need to make in order to justify his claim is that the side AB is straight and is the hypotenuse side of the right triangle.
B. The length of AB is thus;
√(24² + 32²) = 40 yard
C. The approximate perimeter is therefore;
24 + 32 + 40 = 96 yards
classify each event as simple or compound
spinning a spinner and flipping a coin
picking a marble from a bag
drawing a card from the deck
rolling a number cube twice
Answer:
1. Compound
2. Simple
3. Simple
4. Compound
Step-by-step explanation:
The way I differentiated these was based on the quantitivity of each scenario. I related it to compound and simple sentences. For example, when one act was committed, it was clearly singular & simple. But if there was two actions consecutively, I'd consider that compound.
Answer:
compound
Step-by-step explanation:
hope this helps