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3 years ago

What number would you add to the equation below to complete the square?x^2 + 4x = 0

1 answer:

7 0

You should add 4.

You should always add the squareof the p value. The p value is equivalent to half of the b value, or two, since four divided by two is two.
Then square that, so two times two is four.

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If the area of square 3 is 80 cm² and thee area of square 2 is 100 cm², what is the area of square 1?

swat32

Answer:

260 cm²

Step-by-step explanation:

Please see the attached picture for the full solution.

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3 years ago

Harman [31]

Answer: an improper fraction

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3 0

2 years ago

Can anyone help me? first gets brainliest.

liq [111]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice. A. How much sparkling w

cluponka [151]

Answer: We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

Step-by-step explanation:

Given: A recipe for sparkling grape juice calls for 1.5 quarts of sparkling water and .75 quart of grape juice.

Since, for recipe of sparkling grape juice , they should be used in same proportion.

Let x be the amount of sparkling water need to mix with 9 quarts of grape juice, then

$\frac{x}{9}=\frac{1.5}{0.75}\\\Rightarrow\ x=\frac{1.5\times9}{0.75}\\\Rightarrow\ x=18$

We need to mix 18 quarts of sparkling water with 9 quarts of grape juice.

Let y be the amount of grape juice need to mix with 3.75 quarts of sparkling water, then

$\frac{3.75}{y}=\frac{1.5}{0.75}\\\Rightarrow\ y=\frac{3.75\times0.75}{1.5}\\\Rightarrow\ y=1.875$

We need to mix 1.875 quarts of grape juice with 3.75 quarts of sparkling water.

4 0

3 years ago

In a two digit number, the tens digit is 2 less than the units digit multiplied by three. The reversed number is half the origin

Papessa [141]

Answer:

Step-by-step explanation:

Original number: XY

x = 3y - 2

10y + x = (10x + y) / 2 + 1/2

substitution: 10y + 3y - 2 = 13y - 2 = (10 * (3y - 2) + y) / 2 + 1/2

* 2 both sides and simplify: 26y - 4 = 31y - 19

31y - 26y = -4 + 19

5y = 15

y = 3

x = 7

Original number: 73

8 0

3 years ago