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3 years ago

Which property can be used to expand the expression -2(3/4x+7)?

Mathematics

2 answers:

Mademuasel [1]3 years ago

3 0

Answer:

Step-by-step explanation:

The distributive property in algebraic terms is

a(b + c) = ab + ac

given the expression

- 2( $\frac{3}{4}$ x + 7) ← multiply each term in the parenthesis by - 2

= - $\frac{3}{2}$ x - 14

Alex3 years ago

3 0

Answer:

Option C

Step-by-step explanation:

TRUST MEEEEEEEE............

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Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: $216, $18

chubhunter [2.5K]

Answer:

a) 910

b) 828100

c) 144320

Step-by-step explanation:

a. ∑y

This is the sum of all values of y. So

$\sum y = 216 + 184 + 35 + 92 + 142 + 175 + 9 + 57 = 910$

b. (∑y)^2

This is the square of the sum, so the square of 910, that we found in the previous item.

910² = 828100

c. ∑y^2

This is the sum of the squares of each amount spent. So

$\sum y^2 = 216^2 + 184^2 + 35^2 + 92^2 + 142^2 + 175^2 + 9^2 + 57^2 = 144320$

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Step-by-step explanation:

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