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2 years ago

What is the surface area of this rectangular prism?

Mathematics

2 answers:

stira [4]2 years ago

8 0

i think the answer is A.

Vilka [71]2 years ago

3 0

The answer is c hehe give me brainliest if my is true

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What is the value of X in the figure? X=??

snow_lady [41]

Answer:

29°

Step-by-step explanation:

SMH sorry it wasnt $\ 21$

8 0

2 years ago

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Which of the following (x,y) pairs is the solution for the system of equations x+2y=4 and -2x+y=7

kakasveta [241]

Answer:

(-2 ,3)

Step-by-step explanation:

Step 1: Rewrite first equation

x = 4 - 2y

-2x + y = 7

Step 2: Substitution

-2(4 - 2y) + y = 7

Step 3: Solve y

-8 + 4y + y = 7

-8 + 5y = 7

5y = 15

y = 3

Step 3: Plug in y to find x

x + 2(3) = 4

x + 6 = 4

x = -2

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3 years ago

Select all ratios equivalent to 4:3.

valentina_108 [34]

Answer:

8:6 and 16:12

Step-by-step explanation:

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3 years ago

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loris [4]

Step-by-step explanation:

if 5s=3h

34s=?

we will criss cross and

5sx?=3h×34s

5s 5s

=19.5h

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2 years ago

Which shows the expression x^2-1/x^2-x in simplest form

____ [38]

Answer:

$\large\boxed{\dfrac{x+1}{x}=1+\dfrac{1}{x}}$

Step-by-step explanation:

$\dfrac{x^2-1}{x^2-x}=(*)\\\\x^2-1=x^2-1^2\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\=(x-1)(x+1)\\\\x^2-x=(x)(x)-(x)(1)\qquad\text{use the distributive property}\\=x(x-1)\\\\(*)=\dfrac{(x-1)(x+1)}{x(x-1)}\qquad\text{cancel}\ (x-1)\\\\=\dfrac{x+1}{x}=\dfrac{x}{x}+\dfrac{1}{x}=1+\dfrac{1}{x}$

4 0

3 years ago

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