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aleksandr82 [10.1K]
3 years ago
8

Help is needed please!!!!

Mathematics
1 answer:
jeka57 [31]3 years ago
8 0

Answer:

31/20

Step-by-step explanation:

You need to plug in x as y-3.

so instead of 10x+10y=1 it is 10(y-3)+10y=1

Then just simplify the equation to find the value of y

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A square has a perimeter of 48 inches. If a side length is 3x, write an equation to solve for x​
romanna [79]

Answer:

In a square, all sides are equal. This means that each side is 3x inches in length.

The sum of the sides is 48 inches

There are 4 sides in a square.

3x + 3x + 3x + 3x = 48

<em>12x = 48</em> ----> is the equation

This means that x = 4

Each side is 3x inches in length, hence each side is also 3(4) which is 12 inches or 1 feet.

Step-by-step explanation:

5 0
3 years ago
you bought 4 bananas and 5 apples at the store for $2.50 the next day you bought 10 bananas and 3 apples at the store for $3.40.
PIT_PIT [208]
Bananas cost: $0.25 
Apples cost: $0.30

4b+5a=2.50
10b+3a=3.40 
You multiply the equations by the variables so they can cancel out. For example the first one by 3 and the second by 5 so you have

12b+15a=7.50
50b+15a=17
Subtract them and end up with

-38b=-9.5 
solve: b=0.25, substitute b in any equation and get a=0.30
Hope this helped
4 0
3 years ago
Translate the phrases to algebraic expressions.<br><br> The sum of 8 times a number and 3
ivolga24 [154]

Answer:

8x+3

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Mae earns a weekly salary of $330 plus a commission of 6.0% on a sales gift shop.How much would she make if she sold $4300 worth
likoan [24]

Answer:

Total income = $588

Step-by-step explanation:

Given:

Weekly salary = $330

Commission = 6%

Total sales = $4,300

Find:

Total income

Computation:

Total commission = $4,300 x 6%

Total commission = $258

Total income = Weekly salary + Total commission

Total income = $330 + $258

Total income = $588

7 0
3 years ago
What is the value of x in the equation One-third x minus two-thirds = negative 18? –56 –52 52 56What is the value of x in the eq
AleksAgata [21]

Answer:

  –52

Step-by-step explanation:

Clear the fractions, then add 2.

  \dfrac{1}{3}x-\dfrac{2}{3}=-18\\\\x-2=-54\qquad\text{multiply by 3}\\\\\boxed{x=-52}\qquad\text{add 2}

5 0
2 years ago
Read 2 more answers
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