3 years ago

-7+8 what is negative 7 plus 8?

Mathematics

2 answers:

gtnhenbr [62]3 years ago

8 0

Answer:

Step-by-step explanation:

-7 +8=1 cause you have 1 positive left over

Lisa [10]3 years ago

4 0

Answer:

Step-by-step explanation:

You could have just used a calculator tard lol

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xenn [34]

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Step-by-step explanation:

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3 years ago

68 miles to 42.5 is what percent of decrease??

KatRina [158]

68 miles to 42.5's percent of decrease is: 37.5%
Using proportions. 68 miles - 42.5 = 25.5

25.5 x
------ = -----
68 100

Cross multiply:
25.5 x 100 = 2550
68 multiply x = 68x
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3 years ago

A Blimp is 400 feet in the air. There is an angle of depression of 40 degrees to a football stadium. How far is the Blimp from t

VMariaS [17]

Answer:

Step-by-step explanation:

The diagram of the stadium and the blimp is shown in the attached photo. A right angle triangle, ABC is formed. Angle A is alternate to the angle of depression. This mean that they are equal. So angle A =40 degrees.

The distance of the the Blimp from the stadium is x feet which is the hypotenuse of the triangle.

Applying trigonometric ratio,

Sin 40 = 400/x

xsin40 = 400

x = 400/sin40 = 400 / 0.6428

x = 622.3 feet