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3 years ago

Which expression is equivalent to 7 (x + 4)? 28 x 7 (x) + 7 (4) 7 (x) + 4 11 x

Mathematics

2 answers:

GenaCL600 [577]3 years ago

8 0

Anything equal to 7x+28 would be the answer

Rama09 [41]3 years ago

5 0

Answer:

i'm guessing you're asking which expression is the same as 7(x+4)

i don't know what the other numbers listed are suppose to mean, but when expanded, 7(x+4)=7x+28

anything added together, multiplied together, etc, that equals 7x+28 is your answer

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The mountain climber descended 437.85 feet every hour. What is the change in the climber's elevation after 6 hours?

bogdanovich [222]

The answer should probably be 2627.1 feet

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3 years ago

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Jose asks his friends to guess the higher of two grades he received on his math tests. He gives them two hints. The difference o

AlekseyPX

Answer : 96

x – y = 16 --------> equation 1

$\frac{1}{8} x +\frac{1}{2} y = 52$

x is the higher grade and y is the lower grade

We solve the first equation for y

x - y = 16

-y = 16 -x ( divide each term by -1)

y = -16 + x

Now substitute y in second equation

$\frac{1}{8} x +\frac{1}{2} ( -16 + x ) = 52$

$\frac{1}{8} x - 8 + \frac{1}{2} x = 52$

$\frac{1}{8} x + \frac{1}{2} x - 8 = 52$

Take common denominator to combine fractions

$\frac{1}{8} x + \frac{4}{8} x -8 = 52$

$\frac{5}{8} x - 8 = 52$

Add 8 on both sides

$\frac{5}{8} x = 60$

Multiply both sides by $\frac{8}{5}$

x = 96

We know x is the higher grade

96 is the higher grade of Jose’s two tests.

6 0

3 years ago

Read 2 more answers

1.(01.01)

Alja [10]

The right answer is: Add 1, then divide by 6

Step-by-step explanation:

Given equation is:

$6x-1 = 11$

The solution of equation means that we have to isolate the variable on one side of the equation

So,

We will solve the equation to write the sequence of operations

So,

Adding 1 on both sides

$6x-1+1 = 11+1\\6x = 12$

Dividing both sides by 6

$\frac{6x}{6} = \frac{12}{6}\\x = 2$

We can see that the sequence is: Add 1 then divide by 6

Hence,

The right answer is: Add 1, then divide by 6

Keywords: Linear equation, variable

Learn more about linear equation at:

#LearnwithBrainly

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2 years ago

Rachel has $80 in a savings account.The interest rate is 10%per year and is not compounded. How much interest will she earn in 1

erma4kov [3.2K]

Answer:

I = $ 8.00

Equation:

I = Prt

Step-by-step explanation:

First, converting R percent to r a decimal

r = R/100 = 10%/100 = 0.1 per year,

then, solving our equation

I = 80 × 0.1 × 1 = 8

I = $ 8.00

The simple interest accumulated

on a principal of $ 80.00

at a rate of 10% per year

for 1 years is $ 8.00.

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