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3 years ago

Solve using substitution. x + y = 9 –5x + 3y = 19

Mathematics

1 answer:

alexandr402 [8]3 years ago

3 0

Answer:

(1,8)

Step-by-step explanation:

please mark me as brainliest thank you

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A. 45<br> B. 55<br> C. 126<br> D. 4

Licemer1 [7]

Answer:

the answer is B cause I know that is a lot more about a government that did that

6 0

3 years ago

Read 2 more answers

If the equation x² - kx - 36 = 0 has x = 12 as one root, what is the value of k?

sergiy2304 [10]

To solve for k, just plug in the x provided:

12^2 - k(12) - 36 = 0

144 - k(12) = 36

-k(12) = 1/4

k = -1/48

5 0

3 years ago

Please help me with this, image attached.

Ainat [17]

Answer: x = 9 (choice D)

Assuming this is a geometric kite, then this means that triangle ABD is a reflection over the line BD to get triangle BCD. Furthermore, this points to AB and BC being the same length

AB = BC

3x - 5 = 22 .... substitution

3x - 5+5 = 22+5 .... add 5 to both sides

3x = 27

3x/3 = 27/3 ..... divide both sides by 3

x = 9

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3 years ago

Examine the rotation

Serhud [2]

Answer:

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8 0

3 years ago

At a movie theater, admission tickets cost $10 for adults and $8 for children. On Saturday, Anne Teak collected a total of $1276

kow [346]

Answer:

Part a) variable x (the number of adult tickets sold) and variable y (the number of child tickets sold)

Part b) $10x+8y=1,276$

Part c) The number of adult tickets sold was 86

Step-by-step explanation:

Part a) Name a variable for the number of adult tickets sold and name a variable for the number of child tickets sold

Let

x -----> the number of adult tickets sold

y -----> the number of child tickets sold

Part b) Write an equation in two variables to model the problem

we know that

$10x+8y=1,276$ -----> equation A

$y=52$ -----> equation B

substitute equation B in equation A and solve for x

$10x+8(52)=1,276$

$10x+416=1,276$

Part c) Using your equation in Part B, solve the problem and answer the question "how many adult tickets did Anne sell?" i

we have

$10x+416=1,276$

Solve for x

Subtract 416 both sides

$10x=1,276-416$

$10x=860$

$x=86$

therefore

The number of adult tickets sold was 86

7 0

3 years ago