MATHEMATICS MIDDLE SCHOOL

-6 - 8 is equivalent to?
6 + (-8)
-6 + 8
6 + 8
-6 + (-8)

Answers

Answer 1
Answer: It is equivalent to:
-6 + (-8)
Answer 2
Answer:

Answer:

-6 + (-8)

Step-by-step explanation:

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The ground temperature at Brigham Airport is 12 degrees Celsius. The temperature decreases by 6.8 degrees Celsius for every increase of 1 kilometer above the ground. What is the temperature outside a plane flying at an altitude of 5 kilometers?

Answers

Answer:

-22 degrees Celsius.

Step-by-step explanation:

Let x represent number of kilometers.

We have been given that the temperature decreases by 6.8 degrees Celsius for every increase of 1 kilometer above the ground. So temperature decreased in x hours would be -6.8x.

The ground temperature at Brigham Airport is 12 degrees Celsius. The temperature at an altitude of x kilometers would be 12-6.8x.

To find temperature outside a plane flying at an altitude of 5 kilometers, we will substitute x=5 in our expression as:

12-6.8(5)

12-34

-22

Therefore, the temperature outside a plane flying at an altitude of 5 kilometers would be -22 degrees Celsius.

-22 degrees Celsius should be the answer
6.8 times 5 is 34
since 34 is bigger than 12, you take 12 from 34 and add a negative sign, and that would be -22.
You can use a calculator if u want and is allowed too. :)

The length of a rectangle is twice its width. The perimeter of the rectangle is no more than 174 cm. What is the greatest possible value for the width? (a) Write an inequality to model the problem. Explain why the inequality models the problem.
(b) Solve the inequality. Show your work.
(c) Answer the question.

Answers

a.2x+4x≤174 or y+x≤174 or x≤174
This is because x stands the width and that the perimeter.
b. 6x≤174
x≤29
c. The greatest possible value is 29. 

What is 2197 divided by 20? Now, what is the answer in a mixed number?

Answers

109. 85 the mixed number 109 85/100
109 17/20 is your answer 

Belinda babysits her neighborhood's children in the evening every 14 days. Belinda goes to vist her grandmother in the afternoon every 21 days. Belinda has both activitives planned for today. Will Belinda have bith activitives again on the same day within 30 days? Explain your answer.

Answers

Answer:

No

Step-by-step explanation:

Belinda babysits her neighborhood's children in the evening every 14 days. Belinda goes to visit her grandmother in the afternoon every 21 days.

If Belinda has both activities planned for today.

The next time Belinda will have both activities on the same day is determined by the Lowest Common Multiples of 21 and 14.

Express each number as a product of its prime factors

21=3 X 7

14 =2 X 7

L.C.M = 2 X 3 X 7 =42

The next time she will have both activities on the same day is 42 days from today. So both activities occurring 30 days from now is impossible.
no unless she skips a day or the parents don't Need her to work or they go on vacation

What is 1 divided by 998,001 to 9 decimal places?

Answers

Trick question? :P

1/998,001 should be:

0.000001002 or

1.00200300*10^-6

Find the measure of each angle below if angle 1 = 38* and s || t.Angle 2=

Angle 3=

Angle 4=

Answers

Angle  2= 38 degree

Angle 3= 142 degree

Angle 4= 142 degree
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