x + y = -9
5x - 2y = 32

Answer:

Sorry I can't help in this question

Answer:

50% off would be $50

Step-by-step explanation:

20% + 30% = 50% original price was $100 but now with 50% off it is $50

Nike is having a sale $100 shoes is 30% off an additional discount 20% off. The amount to be paid for shoes now is $56.

Discount is the amount of off offered by the seller to the customer on a certain product. It is always offered as a percentage of the marked price of the product to lure the customer to buy the product.

Selling price is the price at which the product is finally sold. It is the marked price of the product minus the discount given.

Marked price = $100

initial discount = 30%

price of shoes becomes = $100 - 30% of $100 = [tex]100 - \frac{30}{100} *100 = 100- 30 = 70[/tex]

Additional discount offered =  20%

selling price of shoes = $70 - 20% of $70 = [tex]70 - \frac{20}{100} *70 = 56[/tex]

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The student's question lacks necessary details to compute the surface area of the composite figure. Generally, surface area is calculated by summing the areas of each face. For cubes, multiply the area of one face by six and adjust for unexposed areas in composites.

The question asks for the total surface area of a composite figure, but the question does not give enough details about the specific shape or composition of the figure. Typically, to find the surface area of any 3-dimensional shape, you'd sum the areas of all the individual faces. For example, for a cube, you'd calculate the area of one face (side length squared) and multiply by 6, because a cube has 6 faces.

In this scenario, if the composite figure was a combination of cubes, you would calculate the total surface area by finding the surface area of each cube separately (surface area of a cube = 6 x side length squared) and then adjust for any faces that are not exposed. The total surface area is the sum of the surface areas of each part of the composite figure minus any overlapping areas.

Without the complete details of the figure, I cannot provide a numerical answer, but I hope this explanation helps you understand the steps involved in computing surface area for composite figures.

When you divide the same value raised to different powers keep the value and subtract the powers.

A^15 / a^5 = a ^(15-5) = a^10

Answer:

a^10

Step-by-step explanation:

Answer:

h = [tex]\frac{2A}{b_{1}+b_{2} }[/tex]

Step-by-step explanation:

Given

A = [tex]\frac{1}{2}[/tex](b₁ + b₂)h

Multiply both sides by 2 to clear the fraction

2A = (b₁ + b₂)h

Divide both sides by (b₁ + b₂)

[tex]\frac{2A}{b_{1}+b_{2} }[/tex] = h

Answer:

30, 150

Step-by-step explanation:

One angle is x

The other angle is 5x

5x + x = 180

6x=180

180/6=30

x=30

5(30)=150

Answer:

x = 84

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here n = 5, thus

sum = 180° × 3 = 540°

Sum the interior angles and equate to 540 for x

131 + 108 + 107 + 110 + x = 540, that is

456 + x = 540 ( subtract 456 from both sides )

x = 84

To find the sum of the finite geometric series 4 + 12 + 36 + 108 + ... + 972, we use the sum formula for geometric series. The common ratio is 3, and there are 6 terms in the series. The sum of the series is 1456.

Evaluating the Sum of a Finite Geometric Series:

To evaluate the sum of the finite geometric series 4 + 12 + 36 + 108 + ... + 972, you need to use the formula for the sum of a finite geometric series:

Sum = a ×([tex]r^{n}[/tex]  - 1) / (r - 1)

where:

Let's identify these values:

To find n, use the formula for the nth term of a geometric series: a * r^(n-1). Given the last term is 972, we solve:

4 × [tex]3^{n-1}[/tex]= 972

Divide both sides by 4:

[tex]3^{n-1}[/tex]= 243

Recognize that 243 = [tex]3^{5}[/tex], so:

n-1 = 5

n = 6

Now, apply the sum formula:

Sum = 4 × ([tex]3^{6}[/tex] - 1) / (3 - 1)

Simplify the expression:

Sum = 4 × (729 - 1) / 2

Sum = 4 × 728 / 2

Sum = 4 × 364

Sum = 1456

Therefore, the sum of the series 4 + 12 + 36 + 108 + ... + 972 is 1456.

Answer:

r=1

Step-by-step explanation:

The correlation coefficient r = 0.8694 suggests a strong positive relationship between the variables, supporting reliable predictions using the regression line.

The correlation coefficient r = 0.8694 indicates a strong positive relationship between the average temperature and electricity costs.

With a value of r = 0.8694 and comparing it to the critical values from the table, r is significant, suggesting a reliable prediction using the regression line.

Therefore, the most likely value closest to the correlation coefficient of the data is r = 0.9.

Answer:

67

Step-by-step explanation:

13×5+2=67

Answer:

65

Step-by-step explanation:

13 x 5 = 65  

nothing will give u a remainder of 2 tho

65

Answer:

3^4 and 9^2

Step-by-step explanation:

Answer:

Step-by-step explanation:

As it is a square, length of all sides will be equal.

So OW = WV = VU = OU

Here, OU = a

so, W(a,o) because in x-axis y=0

V (a,a)

Answer:

2v - 2u

Step-by-step explanation:

We are to subtract u from v.

⇒ We have to take away 'u' from 'v'.

⇒ v - u

Doubling some quantity means make it twice as much. so, we just multiply the result by 2.

We get: 2(v - u)

⇒ 2v - 2u which is the required result.

Answer:

∠ABC ≅ ∠DEC

∠DEC = ∠GEF

thus:

∠ABC = ∠GEF

∠GFE ≅ ∠DCE

∠DCE = ∠ACB

thus:

∠ACB = ∠GFE

If two of their angles are equal, then the third angle must also be equal, because angles of a triangle always add to make 180°.

thus: ΔABC ∼ ΔGEF by AA similar triangle postulate

I hope this helps

Prove [tex]\Delta ABC\cong \Delta GFE[/tex]

The sides opposite to equal angles are equal

∴[tex]DE=DC[/tex]

Subtract [tex]DC[/tex] and [tex]DE[/tex] from [tex]DB[/tex] and [tex]DF[/tex] respectively.

[tex]DB-DC=DF-DE[/tex]

We get, [tex]BC=EF[/tex]------Eq [tex]1[/tex]

[tex]\angle DEC\cong \angle DCE[/tex] (Given)

[tex]\angle DEC= \angle DCE[/tex] (Vertically opposite angle)

[tex]\angle DEC= \angle GEF[/tex] (Vertically opposite angle)

Hence, [tex]\angle ACB= \angle GEF[/tex]------Eq [tex]2[/tex]

In [tex]\Delta ABC[/tex] and [tex]\Delta GFE[/tex]

[tex]BC=EF[/tex] (From eq [tex]1[/tex])

[tex]\angle ACB= \angle GEF[/tex] ( From eq [tex]2[/tex])

[tex]\angle B\cong \angle F[/tex] (Given)

Therefore By AAS congruency [tex]\Delta ABC\cong \Delta GFE[/tex].

Hence Proved.

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Answer:

How to Make a Stem-and-Leaf Plot

Step 1: Determine the smallest and largest number in the data. The game stats: ...

Step 2: Identify the stems. For any number, the digit to the left of the right-most digit is a stem. ...

Step 3: Draw a vertical line and list the stem numbers to the left of the line.

Step 4: Fill in the leaves. ...

Step 5: Sort the leaf data.

Step-by-step explanation:

A stem-and-leaf plot is a graphical representation in statistics that displays all data points in a dataset. It can be formed by ordering the data, separating each data point into a 'stem' and a 'leaf' and recording these on either side of a line on paper.

Your question is about creating a stem and leaf plot, which is a form of graphical representation used in statistics to explore and summarize data. Here is how you make a stem and leaf plot:

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Step-by-step explanation:

Given,

Kente invested part of money  for 2 yr in stock fund that earned the equivalent of 6.5 % simple interest.He put remaining money in a 18 month certificate of deposit that earn of 6.5%simple interest.

Let he invested in stock fund be$ x. Remaining money =$(8000-x)

∴He got interest from stock fund was = [tex]\frac{PRt}{100}[/tex]

                                                        =$[tex]\frac{x\times6.5\times2}{100}[/tex]   [here P =x , R = 6.5% and t = 2 yr]

                                                         =$  [tex]\frac{{13 x}}{{100} }[/tex]

Again he got interest from deposit was = [tex]\frac{PRt}{100}[/tex]

                                                               =$  [tex]\frac{(8000-x)\times 2.5\times\frac{18}{12} }{100}[/tex]     [here P = (8000-x), R=2.5% and t =[tex]\frac{18}{12} yr[/tex]]                              

                                                                =$ [tex]\frac{(8000-x) \times 7.5}{200}[/tex]

According to problem

[tex]\frac{{13 x}}{{100} }+\frac{(8000-x) \times 7.5}{200}= 855[/tex]

⇔[tex]\frac{26x + 60000 - 7.5}{200} =855[/tex]

⇔18.5 x =171000 - 60000

⇔x = [tex]\frac{11100}{18.5}[/tex]

⇔x = 6000

So he invested in stock fund was = $6000

and in certificate of deposit was =$(8000- 6000)= $ 2000

Answer:

I believe it is the fourth graph

Step-by-step explanation:

The only graph that correctly represents the exponential function f(x) = 2ˣ  is the fourth graph

The exponential function is given as:

f(x) = 2ˣ

Thus:

When x = -2, we have:

f(-2) = 2⁻²

f(-2) = 1/2² = 1/4

When x = -1, we have:

f(-1) = 2⁻¹

f(-1) = 1/2¹ = 1/2

When x = 0, we have:

f(0) = 2⁰

f(0) = 1

When x = 1, we have:

f(1) = 2¹

f(1) = 2

When x = 2, we have:

f(1) = 2²

f(1) = 4

Thus, the only graph that correctly represents these values is the fourth graph

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Answer:

430 billion (430,000,000,000) is 4.3 x 10^11 in scientific notation

To convert 430 billion into scientific notation, express it as 4.3 multiplied by 100 billion. In scientific notation, 100 billion becomes 10^11. Therefore, the scientific notation of 430 billion is 4.3 x 10^11.

The process of writing large numbers or small numbers in scientific notation involves expressing the number as a product of a number between 1 and 10 (inclusive) and a power of 10. To write 430 billion dollars in scientific notation, firstly express it as 4.3 multiplied by 100 billion. In scientific notation, 100 billion is 10^11. So, Amazon's worth in scientific notation is 4.3 x 10^11.

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Answer:

1

Step-by-step explanation:

bc theyre even

Answer:

X = the number of songs downloaded by Nigel

Y = the number of songs downloaded by Rebecca

Rebecca downloaded four times as many songs as Nigel.

Y = 4X

Answer:

Step-by-step explanation:

Let Nigel songs be = x

Rebecca downloaded songs = 4x

Answer:

it can be shown that one ten base block is used to break down the number with one value blocks.

Step-by-step explanation:

Base ten blocks is used to divide a two digit divisor as follows.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.

For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

To use Base ten blocks to divide a two digit divisor.

Now,

Let an example as;

156 ÷ 13 = 12

Use Base ten blocks to divide as;

We start with a squares of 100 as 10 groups, then place 3 more groups below the hundred to make 13 groups.

We have 26 left to split evenly to each group.

We get, 12 in each group.

Thus, Base ten blocks is used to divide a two digit divisor as above example.

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Answer:

Step-by-step explanation:

y= 2x - 4........(1)

3y - x = -7.......(2)

Putting (1) into (2)

3(2x - 4) - x = -7

6x - 12 - x = -7

6x - x = -7 + 12

5x = 5

x = 5/5

x = 1

And y = 2x - 4 ...(1)

y = 2(1) - 4

y = 2 - 4

y = -2

Answer:

first and third one

Step-by-step explanation:

did the test on edge

Person A takes 2.3 days to paint the house working alone

Person B takes 13.8 days to paint the house working alone

Solution:

Let "x" be the number of days it takes person A  to paint the house

Person A can paint the neighbor's house 6 times as fast as Person B

Therefore.

Number of days it takes person B to paint the house = 6x

Their rates of painting are added to get  the rate working together

[tex]\frac{\text{1 house}}{\text{x days}} + \frac{\text{1 house}}{\text{6x days}} = \frac{\text{1 house}}{\text{2 days}}[/tex]

[tex]\frac{1}{x} + \frac{1}{6x} = \frac{1}{2}\\\\\frac{1 \times 6}{6x} + \frac{1}{6x} = \frac{1}{2}\\\\\frac{7}{6x} = \frac{1}{2}\\\\\ x = \frac{7}{3}= 2.3[/tex]

Thus person A takes 2.3 days to paint the house working alone

Person B = 2x = 6(2.3) = 13.8

Thus person B takes 13.8 days to paint the house working alone

The total cost function for taking a passenger to the airport is C = 45 + 0.35M, where C is the total cost and M is the number of miles driven. The $45 is a fixed fee, and $0.35 is the charge per mile.

The student is interested in creating a function that models the total cost of taking a passenger to the airport. This function includes a fixed fee and a variable fee that depends on the number of miles driven. To model this, let C represent the total cost and M represent the miles driven.

The total cost C can be represented by the equation C = 45 + 0.35M. Here, the $45 is a fixed fee for using the vehicle, and $0.35 is the additional charge per mile driven.

C represents the total cost of the trip to the airport and M represents the number of miles driven to the airport.

Answer:

211

Step-by-step explanation:

The total miles that Rachel's family travelled can be found to be 211 miles.

First day: 68 miles

Second day: 10 fewer miles than the first day, so:

= 68 miles - 10 miles

= 58 miles

Third day: 85 miles

Add up the miles traveled each day:

Total miles = 68 miles (first day) + 58 miles (second day) + 85 miles (third day)

Total miles = 211 miles

In conclusion, Rachel's family traveled a total of 211 miles over the three days of their car trip.

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Answer:

going into new york using the george washington bridge, consumers must pay a toll (there is not toll to return to New jersey). they can pay $6 cash or they can pay $5 (during peak hour) using the E Z pass system. The E Z pass system is a prepaid plan that also requires a one-time $12 account activation fee. How many trips to new york would a person need to make (during peak hours) so that the total amount spent with the E Z pass is equal to the amount spent for tolls without the E Z pass?

Step-by-step explanation:

Answer:

it would take 3881040 minutes to complete the entire mural

Answer:720

Step-by-step explanation: think about it, 6 packages, 10 per box hold 12 crayons, 10•12=120. 120•6 boxes equals 720. I may be wrong idk but try that. Im fully confident in that answer

Final answer:

To calculate the total number of crayons in a carton, multiply the number of crayons in a small box by the number of boxes in a package, and then by the number of packages in a carton. This results in 720 crayons per carton.

Explanation:

To find out how many crayons come in a carton, we need to do a series of multiplications. We start at the smallest unit, which is the crayon, and work our way up to the carton.

Therefore, there are 720 crayons in a carton.

Option C

3x + 7 > 4x is the inequality for sum of three times a number and seven is greater than four times the number

Solution:

Given that the statement is:

The sum of three times a number and seven is greater than four times the number

We have to find the inequality that represents the above statement

Let the number be "x"

Therefore,

sum of three times "x" and seven is greater than four times "x"

Here "times" represents product or multiplication

Thus we get,

three times "x" + 7 > 4 times "x"

[tex]3x + 7> 4x[/tex]

Thus the inequality is found. Option C is correct

Answ

this is slope intercept form

Step-by-step explanation: