Solve by Elimination:
x + 6y = 28
2x - 3y = -19

Answers

Answer 1

Answer:

x=-2

y=5

Step-by-step explanation:

x=28-6y

2x-3y=-19

(substitute the value of x)

2(28-6y)-3y=-19

y=5

x=28-6*5

x=-2


Related Questions

PLEASE HURRYYYYY Keith takes out a 35,000 loan to purchase a new car. The loan has an interest rate of 3.11%, and Keith will pay the loan back in 5 years with monthly payments of $631. How much will Keith end up paying in interest after paying his car off in 5 years?

Answers

Answer:

2,860.00

I found the answer

Keith takes out a 35,000 loan to purchase a new car. Keith end up paying in interest after paying his car off in 5 years will pay $5442.50.

How to calculate a simple interest amount?

If the initial amount (also called as principal amount) is P, and the interest rate is R% annually, and it is left for T years for that simple interest, then the interest amount earned is given by:

[tex]I = \dfrac{P \times R \times T}{100}[/tex]

Keith takes out a 35,000 loan to purchase a new car.

The loan has an interest rate of 3.11%, and Keith will pay the loan back in 5 years with monthly payments of $631.

Simple interests

[tex]I = \dfrac{P \times R \times T}{100}[/tex]

[tex]I = \dfrac{35,000 \times 3.11\times 5}{100}\\\\I = 5442.50[/tex]

Learn more about simple interests here:

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Janiya has a shoebox with a volume of 609 cubic inches. The length of the shoebox is 14.5 inches and the width is 7 inches. What is the height of the shoebox? Group of answer choices

Answers

Answer:

6 inches

Step-by-step explanation:

Hi there!

[tex]V=lwh[/tex] where l is the length, w is the width and h is the height of a rectangular prism

Plug in the volume (609), length (14.5) and width (7)

[tex]609=(14.5)(7)h\\609=(101.5)h[/tex]

Divide both sides by 101.5 to isolate h

[tex]\frac{609}{101.5} =\frac{101.5h}{101.5} \\6=h[/tex]

Therefore, the height of the shoebox is 6 inches.

I hope this helps!

Is there such a thing as greatest common multiple ? Or is it only least common multiple? Why ?

Answers

The answer is true. The least common multiple is greater than or equal to the numbers being considered, while the greatest common factor is equal to or less than the numbers being considered.

Answer:

Yes.

Step-by-step explanation:

We have GCD and LCM.

GCD means Greatest Common Divisor

LCM means Least Common Multiple

GCD can also mean HCF(Highest Common Factor)

Consider matrix L, a 13x7 matrix. How many elements are in matrix L?

Answers

Answer:

14

Step-by-step explanation:

Answer: 25

Step-by-step explanation:

I got it wrong so heres the right answer

A supermarket had bags of grapes for $20.72 for 7. They also had bags of green grapes priced at 8.46 for 3. Which type of grapes is most expensive?

Answers

Answer:

The grapes are more expensive than the green grapes.

Step-by-step explanation:

GRAPES: If you divide $20.72 by 7, to get one bag of grapes instead of seven, you get $2.96/bag.

GREEN GRAPES: If you divide $8.46 by 3, to get one bag of green grapes instead of three, you get $2.82/bag.

$2.82 is less than $2.96, therefore, the grapes are more expensive than the green grapes.

Two angles are vertical angles. If one of the angles measures 35º and the other measures (4x+3)º, which algebraic equation can be used to solve for the value of x?

35 + 4x + 3 = 180

35 + 4x + 3 = 90

35 = 4x + 3

None of these are correct

4x + 3 = 90

Answers

35 = 4x+3

If they're vertical then they're worth the same or equal. So 4x+3 is equal to 35 and then you solve for x from there.

Helppp the tutorsss arent workinggg

Answers

Answer:

210.82

Step-by-step explanation:

arc length= 2pi r (Ø/360)

= 2x 3.14 x 47(257/360)=210.82

Convert the following base 10 numbers to the respective base indicated .

21 to base 2
109 to base 4
1652 to base 9​

Answers

21 to base 2 is 10101

109 to base 4 is 1231

1652 to base 9 is 2235

Find the gradient of the line segment between the points (-1,3) and (1,-2).
Give your answer in its simplest form.

Answers

Answer:

The gradient of the line segment between the two points is -1

Step-by-step explanation:

The gradient of the line segment between two points is also known as the slope,

We  can find this by using the formula; y₂ - y₁ /  x₂ - x₁

The points given to us are;(-1,2) and (-2,3).

This implies x₁ = -1  ,     y₁=2         x₂ =  -2        y₂= 3

We can now proceed to insert our values into the formula;

Gradient = y₂ - y₁ /  x₂ - x₁

               = 3 - 2  /  -2-(-1)

                = 1  /  -2 + 1

                 =1/-1

Gradient = -1

Therefore the gradient of the line segment between the two points is -1

Heyy I'm the person who helped you with the test. Anyway I disagree with the person who answered on top. The correct answer is -5/2!

What is the measure of angle x?

A 44°

B 53°

C 83°

D 180°

Answers

Answer:

C

Step-by-step explanation:

53 + 44 + x = 180

97 +x = 180

x = 83

help ASAP with working if possible ​

Answers

Answer:

1.  The volume of the cylinder is approximately 0.153 m³

2. 25 cm

3. [tex]25.\overline 6 \ cm[/tex]

4. 16 m

5. 1,785 m³

Step-by-step explanation:

The volume of a solid can be found by the product of the uniform cross-sectional area of the solid and the (continuous) length of the solid

1. The uniform cross-sectional area of the given cylinder = The area of the circle at the base or top

The dimension of the diameter of the circle at the top of the cylinder, d = 50 cm = 0.5 m

The area of the circular cross-section, A = π·d²/4

∴ A = π × 0.5²/4 = 0.0625·π

A = 0.0625·π m²

The height of the cylinder, h = The continuous length of the circular cross-section = 78 cm = 0.78 m

∴ The volume of the cylinder, V = A × h

∴ V = 0.0625·π × 0.78 = 0.04875·π ≈ 0.153

The volume of the cylinder, V ≈ 0.153 m³

2. The given volume of the trapezium, V = 8550 cm³

The length of the short and long parallel sides 'a', and 'b', are 17 cm and 21 cm respectively

The height of the trapezium from the diagram, h = 18 cm

The cross-sectional area of the trapezium, 'A', is found as follows;

A = (17 cm + 21 cm)/2 × 18 cm = 342 cm²

The volume of the trapezium, V = The cross-sectional, A × The (missing) length, 'l' of the trapezium

∴ l = V/A

By substitution, we have;

l = 8550 cm³/(342 cm²) = 25 cm

∴ The Missing Length, l = 25 cm

3. The given volume of the solid having a uniform cross-sectional area is, V = 385 cm³

The area of the (uniform) cross-section of the solid, A = 15 cm²

∴ The length of the solid, 'l', from V = A × l, is given as follows;

l = V/A

∴ l = 385 cm³/(15 cm²) = 25.[tex]\overline 6[/tex] cm

The length of the solid, l = 25.[tex]\overline 6[/tex] cm

4. From the diagram, we have;

The cross-sectional area of the solid, A = 216 m²

The length of the solid, l = 16 m

5. The cross-section of the solid can  can be assumed to be either;

1. A trapezium from which a rectangle has been removed of dimensions 8 m by 9 m.

2. A triangle located above a rectangle

For scenario one, we have;

The cross-sectional area, A = (12.5 + 9)/2 × 15 - 8 × 9 = 89.25

For scenario two, we find 'A' as follows;

A = 7 × 9 + 1/2 × 15 × 3.5 = 89.25

∴ The cross-sectional area of the solid, A = 89.25 m²

The length, 'l', of the solid, is given as l = 20 m

The volume of the solid, V = A × l

∴ V = 89.25 m² × 20 m = 1,785 m³

The volume of the solid, V = 1,785 m³.

URGENT! BRAINLIEST ANSWER!!!

Answers

B 55.8)

nearest tenth associated ground elevation 10- stretched road and car = elevated protation. which is equivalent to 45 ( 0.08 added from the elevation plus the 10 = 55.8

HELP ME !!!!!!!!!!!!!!!!!

Answers

Answer:

c  if i'm correct but its possible that its c

Step-by-step explanation:

After a company celebrated its ten year anniversary, the president of the company wanted to know how long employees have been with the company. Human resources provided the president with the box plot below.
Using the box plot, determine the best measures of the data.

The best measure of center is the (blank)
, and the best measure of variability is the (blank)
.

The number that best summarizes the data is (blank)
years of service.

The number that best describes how the data varies is (blank)
years of service.

Answers

Step-by-step explanation:

the center=3 bc it is in the middle of the box

variability is 2

the number that best summarizes the data is 4.5

the number that describes how the data varies is 9-0=9

Hope that helps :)

Answer:

what's the answer?

Step-by-step explanation:

D. 13 inches

(PLS HELP!!!!)

Answers

Answer:

A

Step-by-step explanation:

Can u pls help me with this question

Answers

Answer:

C. x<4

Step-by-step explanation:

1. Subtract 2 from both sides

2. You get x<4

Answer:

C) x < 4

Step-by-step explanation:

x + 2 < 6

x < 6 - 2

x < 4

It tells to round to the nearest hundredth. Can anybody help?​

Answers

Answer:

I can't see it very clearly but its

288m^2

Answer:

90m is the area. (not sure why it says hundredth we do not have any decimals)

Step-by-step explanation:

find the area of both the triangle and he rectangle

triangle - 18 (area = 0.5 * b * h)

rectangle =72. ( L x W)

add em together

PLEASE HELP 50 points

Answers

Answer:

r > 7 (C)

Step-by-step explanation:

3r−7>14

Step 1: Add 7 to both sides.

3r−7+7>14+7

3r>21

Step 2: Divide both sides by 3.

3r

3

>

21

3

r>7

Hope this helps and makes sense!! Good luck and have a wonderful day! <33

Imagine this < as a alligater and itś eating the greater number!!

Answer:

C.) r ≥ 7

Step-by-step explanation:

1. Add 7 to each side to cancel it out and keep the sign the way it is to avoid confusion

3r - 7 ≥ 14

   + 7    +7

3r ≥ 21

2. Divide each side by 3 to get the variable alone

3r/3 = r

21/3 = 7

r ≥ 7

This means r is greater than or equal to 7, and it can also be written as 7 ≤ r

Please help me
Kali and Kim each improved their yards by planting rose bushes and shrubs. They bought their supplies from the same store. Kali spent $32 on 2 rose bushes and 14 shrubs. Kim spent $26 on Il rose bushes and 2 shrubs. What is the cost of one rose bush and the cost of one shrub?​

Answers

Answer:

$2 for 1 rose bush and $2 for one shrub

Step-by-step explanation:

32=2x+14y

26=11x+2y

32=2(2)+14(2)

32=4+28

32=32

26=11(2)+2(2)

26=22+4

26=26

Since both equations come out correct the cost of 1 rose bush is 2 dollars and the cost of one shrub is 2 dollars. kinda cool

Answer:

The cost of one rose bush is $2 and the cost of one shrub is $2.

Step-by-step explanation:

Let r represent the cost of 1 rose bush and s the cost of 1 shrub.

Kali's expenditure

2r + 14s = 32

Divide each term by 2

r + 7s = 16 ------ (i)

Kim's expenditure

11r + 2s = 26 ------ (ii)

From equation (i)

r = 16 - 7s

11(16 - 7s) + 2s = 26

176 - 77s + 2s = 26

-75s = 26 - 176

-75s = -150

s = -150/-75 = 2

r = 16 - 7s = 16 - 7(2) = 16 - 14 = 2

The cost of one rose bush is $2 and the cost of one shrub is $2

The are of a shaded region is 118 ft squared. Which equation can be- used to find the value of X, in feet?

Answers

Answer:

[tex]x^2+ 18x -130=0[/tex]

Step-by-step explanation:

Given

See attachment for diagram

Required

The equation to find x

First, calculate the area of the big rectangle using:

[tex]Area = Length * Width[/tex]

So:

[tex]A_1 = (x + 6) * (3x - 2)[/tex]

The smaller rectangle

[tex]A_2 = (x - 1) * (2x)[/tex]

The difference between this areas give the area of the shaded region.

So:

[tex]A_1 - A_1 = 118[/tex]

[tex](x+6)*(3x-2) - (x-1)*2x = 118[/tex]

Open brackets

[tex]3x^2 - 2x + 18x -12 -2x^2 +2x = 118[/tex]

Collect like terms

[tex]3x^2 -2x^2- 2x +2x+ 18x -12 - 118=0[/tex]

[tex]x^2+ 18x -130=0[/tex]

The above equation can be used to solve for x

PLS GRAPH THE EQUATION!!

Answers

Answer:

Step-by-step explanation:

It’s too harddd what

How long will it take the population of a certain country to double if it’s annual growth rate is 7.3%?

Answers

9.5 years. The reason being you need to use the formula P(t)= P e kt in which you would get 2= 0.073t

Then you would write the equation as ln(2)= 0.073t

After you put the number on the same side and get t= ln(2)/ 0.073

And then you get and answer of 9.49 year which would round up to 9.5

A cylinder has a volume of 99 cubic inches. If a cone has the same height and radius as the cylinder, what is the volume of the cone, in cubic inches?

Answers

Answer:

297 cubic inches

Step-by-step explanation:

Given: A cylinder has a volume of 99 cubic inches. A cone has the same height and radius as the cylinder.

To find: The volume of the cone in cubic inches.

Formula: The formula for the volume of a cone is V = [tex]\frac{1}{3}[/tex]hπr².

Solution: Firstly, find out the height and radius of the cylinder

... = 297 cubic inches

from edgunuity please help asap! image attached above​

Answers

It’s 4 I hope this helps


Explanation I took this in 9th grade so I know how to do this kind of stuff

Name all of the quadrilaterals that have the given attributes.

Answers

Answer:

See below

Step-by-step explanation:

Opposite sides are parallel:

parallelogram, rectangle, rhombus and square

4 right angles:

rectangle square

Exactly 1 pair of parallel sides:

trapezoid

4 congruent sides:

square

Have a great day!

The length of a rectangle plus its width is 18 cm. The area is 80 sq cm. what are the length and width of the rectangle?

Answers

Answer:

80 units squared

Step-by-step explanation:

If two sides of a rectangle add up to 18cm and the area is 80 units squared then the length is 10cm, and the width is 8cm. If you add 10 and 8 together you get 18, and if you multiply those you get 80 units squared.

Let ​ x2+8x=7 .​

What values make an equivalent number sentence after completing the square?
Enter your answers in the boxes.

​​x2+8x+ ? ​= ​?

Answers

Answer:

x²+8x+16=24

Step-by-step explanation:

x²+8x=7 (+16)

x²+8x+16=7+16=24

(x+4)²=24

The values to be entered in the boxes are 16 and 23.

Given the equation is [tex]x^2[/tex]+8x=7

To complete the square for the equation [tex]x^2[/tex] + 8x = 7, we need to add a constant term on both sides of the equation to create a perfect square trinomial on the left side.

First, take half of the coefficient of the x-term (8) and square it:

[tex](8/2)^2[/tex] = 16

Now, add 16 to both sides of the equation:

[tex]x^2[/tex] + 8x + 16 = 7 + 16

Simplifying:

[tex]x^2[/tex] + 8x + 16 = 23

Therefore, the equivalent number sentence after completing the square is [tex]x^2[/tex] + 8x + 16 = 23

The values to be entered in the boxes are 16 and 23.

Hence, [tex]x^2[/tex] + 8x + 16 = 23.

Learn more about completing the square in quadratic equations, click here:

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joseph ordered 17 yards of lumber to build a tree house. how many inches of lumber did he order?

Answers

Answer:

612 inches.

Step-by-step explanation:

1 yard = 36 inches.

17 * 36 =

Answer:

612 inches

Step-by-step explanation:

1 yard = 36 inches

17 yards = 36 × 17 = 612 inches

James is 612cm tall. how many decimeters is this.

Answers

Answer:

61.2 decimeter.

Step-by-step explanation:

PLEASE HELP I NEED IT TO PASS THIS CLASS

Answers

Answer:

complement angle = 52 + 38 = 90°

supplement angle = 47 + 133 = 180°

Step-by-step explanation:

[tex]here \: is \: your \: solution \: \\ measure \: of \: one \: angle \: = 52 \\ let \: the \: other \: angle \: be = x \\ \\ x \: + 52 \: = 90 \\ x \: = \: 90 - 52 \\ x \: = 38 \\ now \: second \: question \\ x + 47 = 180 \\ x = 180 - 47 \\ x = 133 \\ hope \: it \: helps[/tex]

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