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4 years ago

Subtract the values using elimination method -9a-3b-39 4a+2b-4

1 answer:

3 0

-5a-b-43 is the answer just using elimination if you want to solve it set 2 varibles equal to each other and then subtract

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Bridget buys a pair of shoes that cost $89.99. She has a coupon for 30% off. How much does she pay for the shoes?

aleksklad [387]

Answer:

$20.40

Step-by-step explanation:

6 0

3 years ago

3x+7-6=(8/7)-0<br>Value of x?

ArbitrLikvidat [17]

Answer:

$\boxed{\sf x = \dfrac{1}{21}}$

Explanation:

$\rightarrow \sf 3x+7-6= \dfrac{8}{7} - 0$

simplify the following

$\rightarrow \sf 3x+1= \dfrac{8}{7}$

subtract 1 from both sides

$\rightarrow \sf 3x+ 1 -1= \dfrac{8}{7} - 1$

simplify the following

$\rightarrow \sf 3x= \dfrac{1}{7}$

multiply both sides by 1/3

$\rightarrow \sf 3x \cdot \dfrac{1}{3}= \dfrac{1}{7}\cdot \dfrac{1}{3}$

simplify the following

$\rightarrow \sf x = \dfrac{1}{21}$

5 0

2 years ago

Read 2 more answers

Use Synthetic substitution to find f(3) and f(-4) for f(x)=x^4-8x-11

brilliants [131]

Answer:

46 and 277

Step-by-step explanation:

Given

f(x) = $x^{4}$ - 8x - 11 ← substitute x = 3, x = - 4 into f(x)

f(3) = $3^{4}$ - 8(3) - 11 = 81 - 24 - 11 = 81 - 35 = 46

f(- 4) = $(-4)^{4}$ - 8(- 4) - 11 = 256 + 32 - 11 = 288 - 11 = 277

4 0

3 years ago

Find vertex and y- intercept and x-intercept in x^2 -2x-15

AfilCa [17]

It would be (x-5)(x+3)

4 0

3 years ago

What happens to the value of the expression 80-2r80−2r80, minus, 2, r as rrr decreases? Choose 1 answer: Choose 1 answer: (Choic

Pie

Answer:

(Choice B) B It decreases.

Step-by-step explanation:

According to the situation, the solution of the value of the expression is as follows

Let us assume

r 80 -2r

5 80 - 10 = 70

4 80 - 8 = 72

3 80 - 6 = 74

2 80 - 4 = 76

1 80 - 2 = 78

As we can from the above calculation that expression value risen if r value decreased

Therefore the correct option is B.

6 0

4 years ago

Read 2 more answers