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3 years ago

2x - 7y = 13 3x + y = 8

1 answer:

6 0

A) 2x - 7y = 13
B) 3x + y = 8
Multiplying equation B by 7
B) 21x + 7y = 56 then adding it to A
A) 2x - 7y = 13
23x = 69
x = 3
y = -1

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Find the sale price or retail price Original price= $45 Percent discount= 15%

Verizon [17]

The sail price would be 38.25 because the original price is 45 and the discount is 15% and that would be 0.15 you need to multiply 45 with 0.15 and that would 38.25

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3 years ago

What is the absolute value of a number

Minchanka [31]

The answer your looking for is 5

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3 years ago

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Help asap will give brainliest!!!!

GarryVolchara [31]

Answer:

Step-by-step explanation:

ley y = f(x) and rearrange making x the subject

y = $\frac{1}{x+5}$ - 1 ( add 1 to both sides )

y + 1 = $\frac{1}{x+5}$ ( multiply both sides by (x + 5)

(y + 1)(x + 5) = 1 ← expand factors using FOIL

xy + 5y + x + 5 = 1 , that is

xy + x + 5y + 5 = 1 ( factor first/second and third/fourth terms on left side )

x(y + 1) + 5(y + 1) = 1 ← factor out (y + 1) from each term on left side

(y + 1)(x + 5) = 1 ( divide both sides by (y + 1) )

x + 5 = $\frac{1}{y+1}$ ( subtract 5 from both sides )

x = $\frac{1}{y+1}$ - 5

Change y back into terms of x with x = $f^{-1}$ (x) , then

$f^{-1}$ (x) = $\frac{1}{x+1}$ - 5 where x ≠ - 1

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3 years ago

Kayla needs $14,000 worth of new equipment for his shop. He can borrow this money at a discount rate of 10% for a year.

arlik [135]

Answer:

$15400

Step-by-step explanation:

Principle amount, P = $14000

Time, T = 1 year

Rate of interest, R = 10%

We know that maturity amount,

$A = P\left (1+\frac{R}{100} \right )^{n}$

where n is number of years

$A = P\left (1+\frac{R}{100} \right )^{n}$

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$A = 14000\left (1+\frac{1}{10}\right )$

$A = 14000\left (\frac{11}{10}\right )$

$A = 15400$

The maturity amount is $15400

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3 years ago

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kondor19780726 [428]

Answer:

6-3c-C

Step-by-step explanation:

3(2-c)-C

3(2)-3(c)-C

6-3c-C

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3 years ago

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