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joja [24]
3 years ago
7

Which of the following equations are equivalent? Select three options.

Mathematics
2 answers:
yaroslaw [1]3 years ago
5 0

Answer:

number 1, 2, and 5

Step-by-step explanation:

Arturiano [62]3 years ago
3 0

Answer:

Choices A and D

Step-by-step explanation:

Solve every equation. If the equations have the same solution as the given equation, then they are equivalent.

Given equation:

2 + x = 5

x = 3

Choices:

A.

x + 1 = 4

x = 3   <------  equivalent

B.

9 + x = 6

x = -3

C.

x + (-4) = 7

x - 4 = 7

x = 11

D.

-5 + x = -2

x = 3      <--------  equivalent

Answer: Choices A and D

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Which of the following is the mid segment of ABC
madam [21]

Answer:

LM

Step-by-step explanation:

A midsegment is the line from the midpoint of 2 sides of the triangle and parallel to the third side.

L is at the midpoint of AB and M is at the midpoint of BC

LM is the midsegment


3 0
3 years ago
Read 2 more answers
What is the value of x in the equation-2/5x-2=18
Flura [38]
First we have to isolate the varible

-2/5x-2=18
        +2   +2

-2/5x=20

then divide both sides by -2/5 to get x completely by itself

-2/5x=20
-------  ---
-2/5     -2/5

x=-50

i hope i've helped!
5 0
4 years ago
Read 2 more answers
A multiple choice test has four possible answers for each question. Let X be the number of correct responses in a test of 100 qu
dimulka [17.4K]

Answer:

a. 4.33.

Step-by-step explanation:

If there is only one correct answer out of four alternatives, the expected proportion of correct answers is p =0.25

Sample size (n) = 100 questions

The standard deviation of a proportion 'p' is given by:

s=\sqrt{\frac{p*(1-p)}{n} }

Applying the given data:

s=\sqrt{\frac{0.25*(1-0.25)}{100}}\\s=0.0433

If X is the number of correct responses in 100 guesses, the standard deviation of X is:

\sigma = n*s=100*0.0433\\\sigma = 4.33

The standard deviation of X is 4.33 questions.

7 0
3 years ago
THE HELP IVE BEEN RECIEVEING HAS MADE ME SO HAPPY SO I JUST WANNA TAKE THE TIME TO SAY THANK YOU SO MUCH T-T. if anyone can help
Alex Ar [27]

Answer:

Some answers to the reducing fraction sheet

Q14 = 4/5 because divide 12 and 15 by 3

Q15=can't be reduced because 11 is a prime number so it can't be divided by anything

Q17=can't be reduced because 17 is a prime number

Q18=can't be reduced because 13 is a prime number

Q19=38/9 because 114 and 27 would be divided by 3

Q20= -1/1 because you would divide both 14,529 by itself would equal to - 1/1

I can only help you with this sheet I can't help you with the other one hope this was helpful! :)

6 0
3 years ago
Evaluate $\dfrac{2\sqrt{72}}{\sqrt{8}+\sqrt{2}}$.
Pavlova-9 [17]
<h3>Answer:  4</h3>

========================================================

Work Shown:

\frac{2\sqrt{72}}{\sqrt{8}+\sqrt{2}}\\\\\frac{2\sqrt{36*2}}{\sqrt{4*2}+\sqrt{2}}\\\\\frac{2\sqrt{36}*\sqrt{2}}{\sqrt{4}*\sqrt{2}+\sqrt{2}}\\\\\frac{2*6*\sqrt{2}}{2*\sqrt{2}+\sqrt{2}}\\\\\frac{12\sqrt{2}}{2\sqrt{2}+\sqrt{2}}\\\\\frac{12\sqrt{2}}{3\sqrt{2}}\\\\\frac{12}{3}\\\\4

Note in step 2, I factored each number in the square root to pull out the largest perfect square factor. From there, I used the rule that \sqrt{A*B} = \sqrt{A}*\sqrt{B} to break up the roots.

8 0
2 years ago
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