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2 years ago

Which choice describes an equation

Mathematics

1 answer:

Sladkaya [172]2 years ago

6 0

Answer:

Step-by-step explanation:

Remark

Choose any number at all and see what happens.

Suppose x = 8

3*(8 + 1) = 3*8 + 3

3(9) = 27

3*8 + 3 = 24 + 3 = 27

What you have shown is that the second choice is incorrect. There is at least one value that makes the equation correct (that is, both sides come to the same result.)

If choice two is false then choice one must be true since these results may give the only 2 possible results.

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5(3m+n)?

sergij07 [2.7K]

Answer: 15m + 5n

Step-by-step explanation:

so, first off, we take the number outside of the parentheses and multiply it by everything that's inside of the parentheses.

(5)3m + 5(n)

then, we just multiply all of those together.

15m + 5n

3 0

3 years ago

Make an approximate conversion from English to metric. <br><br> 9 ft to meters

Anna71 [15]

Answer:

2.7 meters

Step-by-step explanation:

I hope this helped

4 0

3 years ago

HELPPP !! LOOK AT PICTURE

WINSTONCH [101]

Answer:

A) (-infinity,-2] and D) [0,2]

Step-by-step explanation:

7 0

3 years ago

The time (X) to complete a standardized exam is approximately normal with a mean of 70 minutes and standard deviation of 10 minu

notka56 [123]

Answer:

77.88 minutes

Step-by-step explanation:

Given that :

Mean (m) = 70

Standard deviation (s) = 10

For 80% of student to complete the exam. In the given time

Using the formula :

Zscore = (X - mean) / standard deviation

80th percentile = 80/100 = 0.8 has a Zscore = 0.7881

0.7881 = (X - 70) /10

0.7881 * 10 = X - 70

7.881 = X - 70

7.881 + 70 = X

77.881 = X

Hence, 77.88 minutes should be given

5 0

3 years ago

(MATH) What is the reason for each step in the solution of the inequality?

Rama09 [41]

Step-by-step explanation:

Inequalities are solved just like equations the only difference is that the inequality sign has to be considered.

We are writing the steps with reason

So,

1. Given

$-38-3(x+5)>6x-17$

2. Distributive property:

$-38-3x-15>6x-17$

3. Combine like terms

$-3x-53>6x-17$

4. Subtraction property of order

$-3x-53-6x>-17$

$-9x-53> -17$

5. Addition property of order

$-9x> -17+53$

$-9x>36$

6. Division property of order

$x$

Keywords: Inequality, Properties

Learn more about inequalities at:

#LearnwithBrainly

7 0

3 years ago