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4 years ago

What is the solution to the equation? 7x + 6 = -22

Mathematics

1 answer:

trapecia [35]4 years ago

7 0

C.) x = -4 is the correct answer

Step-by-step explanation:

In order to solve the equation we have to isolate x on one side of equation

Given

7x + 6 = -22

Subtracting 6 from both sides

$7x+6-6=-22-6\\7x=-28$

Dividing both sides by 7

$\frac{7x}{7}=\frac{-28}{7}\\x=-4$

Hence,

C.) x = -4 is the correct answer

Keywords: Linear equation

Learn more about linear equation at:

#LearnwithBrainly

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If the product of two numbers is positive, then the two numbers must both be postive

zaharov [31]

that would be correct

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3 years ago

Given: f(-x) = x - 7 and h(x) = 2x + 3

Nitella [24]

Answer:

if given f(-x)=x-7, then f(h(x))=-2x-10

or if given f(x)=x-7, then f(h(x))=2x-4

Step-by-step explanation:

if given f(-x)=x-7

f(-x)=x-7 => f(-(-x))=(-x)-7 =>f(x)= -x-7

f(h(x))=f(2x+3)= -(2x+3)-7 = -2x-3-7 = -2x-10

if given f(x)=x-7

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3 years ago

Hideki buys 2 sweaters for $18 each. He can use one of the following coupons: Coupon 1-:buy one, get one 40% off

Lady bird [3.3K]

Answer:

Coupon 2

Step-by-step explanation:

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7 0

4 years ago

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Antonio wants to invest $7600 in a saving account. Determine the interest rate (simple interest) required for Antonio’s investme

disa [49]

<h3>Interest rate required for Antonio’s investment to double in value in 12 years is 8.3 % per annum</h3>

Solution:

Given that,

Antonio wants to invest $7600 in a saving account

Antonio’s investment to double in value in 12 years

To find: Rate of interest

The total amount using simple interest is given as:

$A = p(1+\frac{r}{100}t)$

Where,

p is the principal

r is the rate of interest

t is the number of years

From given,

p = 7600

t = 12 years

r = ?

Antonio’s investment to double

Therefore,

A = 2(7600) = 15200

Substituting the values we get,

$15200 = 7600(1 + \frac{r}{100} \times 12)\\\\\frac{15200}{7600} = 1 + 0.12r\\\\2 = 1 + 0.12r\\\\0.12r = 2 - 1\\\\0.12r = 1\\\\r = 8.333 \%$

$r \approx 8.3 \%$

Thus interest rate required for Antonio’s investment to double in value in 12 years is 8.3 % per annum

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4 years ago

Which statement is an example of the Addition Property of Equality? (1 point). . If p = q then p • s = q • s .. If p = q then p

atroni [7]

The formal name for the property of equality that allows one to add the same quantity to both sides of an equation. This is one of the most commonly used properties for solving equations.

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4 years ago

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