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3 years ago

Is this equation true or false? 4(-5) = (-25)

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

3 0

4*-5 is -20 is does not equal -25 so it’s false

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You run a ten-kilometer race in 45.5 minutes. Write an inequality for the time of the runners who finished the race after you di

julsineya [31]

Answer:

If a runner is behind you, s/he must have taken longer, so the times of all of the runners who finished after you did must be greater than 45.5 minutes

Step-by-step explanation:

Hmu if you need more help or sum!

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3 years ago

Reed wants to buy a new tent for an upcoming camping trip. The tent is marked down from its original price by 20%, and Reed has

lukranit [14]

You would take 175 and multiply it by 0.20 which is 35. The you would subtract 35 from 175 because it is marked down so you would get 140. Next, you would take 140 and multiply it by 0.10 and get 14. Finally subtract 14 from 140 to get your answer which would be $126.

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3 years ago

Four students found the mean of the data set 26, 31, 39, 30, 16, 16, 18, 38. which student found the correct mean? ashrita’s wor

balu736 [363]

In calculating the mean of this data set Ashrita did the best job.

The Mean of the data set is the most commonly used measures of central tendency.

It means the average value of the data set.

one doesn't have to arrange the data in order for finding it.

<h3>What is the meaning of mean?</h3>

The data set value takes is to add them all together and divide that by the number of the data.

It can be written as

$,(x_1 + x_2 + x_3 + ..... + x_n) / n$

Where $x_1 , x_2 , x_3 , ..... ,x_n$ are the values in the data set

Therefore we can conclude that Ashrita did the best job in calculating the mean of this data set.

To learn more about the mean visit:

brainly.com/question/968894

6 0

2 years ago

Part A

Nat2105 [25]

Answer:

A. $f(n) =0.2n+4.8$

B. The y intercept is 4.8

Step-by-step explanation:

Given

$a_n= 5 + 0.2(n-1)$

Solving (a): Write as a function.

To do this, we simply substitute f(n) for $a_n$

$a_n= 5 + 0.2(n-1)$ becomes

$f(n)= 5 + 0.2(n-1)$

Open Bracket

$f(n) = 5 + 0.2n-0.2$

Collect Like Terms

$f(n) =0.2n-0.2 + 5$

$f(n) =0.2n+4.8$

B. The y intercept.

To get the y intercept, we set n to 0

i.e

$f(0) =0.2 * 0+4.8$

$f(0) =0+4.8$

$f(0) =4.8$

Hence, the y intercept is 4.8

4 0

2 years ago

The measure of the supplement of an angle is 12 more than twice the measure of the angle. Find the measures of the angle and it'

astra-53 [7]

Supplementary angles add up to 180 degrees-

Let x = "the angle"

supplement angle = 2x + 12 // 12 more than twice the measurement of "the angle"

Supplement angle + "the angle" = 180 degrees

(2x + 12) + x = 180 degrees // 2x + 12 is the supplement angle

3x + 12 = 180 // Simplify

3x = 168 // Subtract 12 from both sides

x = 56 degrees // Divide both sides by 3

The measure of the angle is 56° and its supplement is 124°

3 0

3 years ago