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3 years ago

How do I solve 8x+5y=-20 ?

Mathematics

1 answer:

Vlad [161]3 years ago

4 0

Answer: y=-8/5x-4

Step-by-step explanation:

8x+5y=-20

-8x -8x

5y=-8x-20

/5 /5

y=-8/5x-4

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What is the volume of a square pyramid if the perimeter of the base is 44 in and the height is 19 in.? Round to the nearest tent

Olin [163]

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766.3

Step-by-step explanation:

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3 years ago

Margaret’s bottle of shampoo is 7/8 full. She uses 1/3 of the shampoo in the bottle to wash the dog. Estimate what fraction of s

AleksandrR [38]

Fraction of shampoo left = $\frac{13}{24}$

Solution:

Given fraction of full shampoo $=\frac{7}{8}$ .

Fraction of shampoo Margaret used $=\frac{1}{3}$

Fraction of shampoo left = Full shampoo – fraction of shampoo used

$=\frac{7}{8}-\frac{1}{3}$

To make the denominators same do cross multiplication.

$=\frac{7\times3}{8\times3}-\frac{1\times8}{3\times8}$

$=\frac{21}{24}-\frac{8}{24}$

$=\frac{21-8}{24}$

$=\frac{13}{24}$

Hence $\frac{13}{24}$ of the shampoo bottle is left.

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4 years ago

A bag contains 3 red balls, 4 green balls, and 2 yellow balls. Deborah reaches into the bag and pulls out the following 4 balls:

scoray [572]

The probability that the ball Deborah picks is green is; 3/5.

<h3>What is the probability that the ball picked last is green?</h3>

Since the bag initially contains; 3 red balls, 4 green balls, and 2 yellow balls, after Deborah pulls out the 4 balls: red, red, green, yellow.

The balls remaining are; 1 red ball, 3 green and 1 yellow.

Hence, the probability that the final ball she picks is green is; 3/(3+1+1) = 3/5.

Read more on probability;

brainly.com/question/251701

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2 years ago

A car's value decreases 7% per year. Is this growth or<br> decay?

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Step-by-step explanation: The value is worth less every year

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3 years ago

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statuscvo [17]

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Step-by-step explanation:

They are congruent by 2 sides and the included angle

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3 years ago