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2 years ago

What numbers have a sum of 20 and the difference is 4

Mathematics

2 answers:

kvv77 [185]2 years ago

8 0

Answer:

The numbers are 12 and 8

Step-by-step explanation:

let the numbers be x and y :

$x + y = 20 - - - (a) \\ x - y = 4 - - - (b)$

add (a) and (b):

$2x + 0y = 24 \\ 2x = 24 \\ x = 12$

find y:

$x + y = 20 \\ 12 + y = 20 \\ y = 20 - 12 \\ y = 8$

balu736 [363]2 years ago

6 0

Answer:

16 and 2

Step-by-step explanation:

I'm not sure honestly if this is correct, but I hope this helps.

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Multiply or divide to find two equivalent fractions of 1/2

patriot [66]

Answer:

3/6 and 5/10

Explanation:

Given the fraction 1/2:

(a)Multiply the numerator and denominator by 3

$\frac{1}{2}\times\frac{3}{3}=\frac{3}{6}$

An equivalent fraction is 3/6.

(b)Multiply the numerator and denominator by 5:

$\frac{1}{2}\times\frac{5}{5}=\frac{5}{10}$

An equivalent fraction is 5/10.

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1 year ago

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antiseptic1488 [7]

Answer:

$-3x^{4} + 3{x}^{3} + 8{x}^{2}- 2x - 5$

Step-by-step explanation:

To avoid confusion, distribute the negative amongst all terms in the second set of parentheses.

I hope this helps you out alot, and as always, I am joyous to assist anyone at any time.

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2 years ago

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Solve the inequality: 3(k + 2) -3 < 15

grin007 [14]

Isolate the variable by dividing each side by factors that don't contain the variable.

Inequality Form:

k < 4

Interval Notation:

(−∞, 4)

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2 years ago

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Julli [10]

Answer:

More than one independent variable being tested.

Step-by-step explanation:

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Lena [83]

Answer:

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