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3 years ago

Solve the equation using inverse operations. Check your solutions. In your final answer, include all of your work.

Mathematics

2 answers:

Bess [88]3 years ago

6 0

-2x^2=-15-5
-2x^2=-10
x^2=-5
X≠R i am not quite sure but...hope it helps :)

Katyanochek1 [597]3 years ago

4 0

The answer for this equation

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Leto [7]

Answer:

x = 12

y = 12√3

Step-by-step explanation:

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3 years ago

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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3 years ago

Can 1 be expressed as a fraction

elixir [45]

Any integer can be written as a fraction! Just put that integer as the numerator of a fraction with a denominator of 1.

<h2>hope it helps!</h2><h2>#carry on learning</h2>

6 0

2 years ago

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Solve for X 3(x + 7) < 7(x + 2)

Furkat [3]

Answer:

x > 7/4

Step-by-step explanation:

3(x + 7) < 7(x + 2)

Expand brackets: 3x + 21 < 7x + 14

Subtract 14 from both sides: 3x +7 < 7x

Subtract 3x from both sides: 7 < 4x

Divide both sides by 4: 7/4 < x

Therefore x > 7/4

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2 years ago

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Which country won the last world cup

just olya [345]

Answer:

The country is France.

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3 years ago

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