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Leya [2.2K]
4 years ago
8

BASIC ALGEBRA PLZZZ HELP (x+y)(x-y)

Mathematics
2 answers:
ELEN [110]4 years ago
6 0

Answer:

x^2-y^2

Step-by-step explanation:

Given the expression (x+y)(x-y)

We can distribute this using the FOIL technique

This would leave us with

x^2+xy-xy-y^2

Then we can combine like terms to leave us with

x^2-y^2

Marizza181 [45]4 years ago
6 0

Steps:

(x+y)(x-y)

x^2-xy+xy-y^2

Multiplying the brackets together.

negative and positive= negative

= x^2-y^2

Answer is x^2-y^2

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15 inches of snow fell in 12 hours. At this rate, how many inches of snow will fall in 3 days.
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Answer:

90 in

Step-by-step explanation:

15 x 6 = 90 in

This is because

6 x 12 hrs = 3 days

8 0
3 years ago
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Select 3 expressions that have a sum or difference of 3 /4 .
cupoosta [38]

Answer:

The Three expressions that have a sum or difference of 3 /4 .

B . 11/12 − 1/6

C. 3/5 + 3/20

E . 2/3 + 1/12

Step-by-step explanation:

The Three expressions that have a sum or difference of 3 /4 .

are

B . 11/12 − 1/6

\dfrac{11}{12}-\dfrac{1}{6}=\dfrac{11}{12}-\dfrac{1\times 2}{6\times 2}\\\\\dfrac{11}{12}-\dfrac{1}{6}=\dfrac{11}{12}-\dfrac{2}{12}=\dfrac{11-2}{12}=\dfrac{9}{12}=\dfrac{3}{4}

Therefore,

\dfrac{11}{12}-\dfrac{1}{6}=\dfrac{3}{4}

C. 3/5 + 3/20

\dfrac{3}{5}+\dfrac{3}{20}=\dfrac{3\times 4}{5\times 4}+\dfrac{3}{20}\\\\\dfrac{3}{5}+\dfrac{3}{20}=\dfrac{12}{20}+\dfrac{3}{20}=\dfrac{15}{20}=\dfrac{3}{4}

Therefore,

\dfrac{3}{5}+\dfrac{3}{20}=\dfrac{3}{4}

E . 2/3 + 1/12

\dfrac{2}{3}+\dfrac{1}{12}=\dfrac{2\times 4}{3\times 4}+\dfrac{1}{12}\\\\\dfrac{3}{5}+\dfrac{3}{20}=\dfrac{8+1}{12}=\dfrac{9}{12}=\dfrac{3}{4}

Therefore,

\dfrac{2}{3}+\dfrac{1}{12}=\dfrac{3}{4}

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The correct answer is D
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Step-by-step explanation:

multiply 7 and 1 after that it will 7 and again adding 7 + 2 so it will be 9 so the answer will be 9 and 7

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Problem Page A parachutist's rate during a free fall reaches 171 kilometers per hour. What is this rate in meters per second? At
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