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3 years ago

Help! Will give BRAINLIEST!! 20 POINTS!

Mathematics

2 answers:

tankabanditka [31]3 years ago

8 0

I got 2400 because 120 x 80 = 9600 divided by 4 = 2400 idk i may be wrong
this is my sister's account she quit

zimovet [89]3 years ago

7 0

The answer would be 2400ft
why:
120 x 80 : 9600
9600 divide by 4 (becuz there are 4 sides ) is 2400
hope this helps though!!

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Mrs. barney earns $80 for tutoring for 2 hours. If she gets a 10% raise, how much does she now earn per hour.

olga_2 [115]

Answer:$88

Step-by-step explanation:

multiply 80 dollars by 10% then add that answer to 80 dollars and that gives you 88 dollars

8 0

3 years ago

Mrs Franklin's speedometer said she was driving at a rate of 48 miles per hour. When checking the accuracy of her speedometer, a

Ket [755]

The percent error is 4.167 %

Solution:

Given that, Mrs Franklin's speedometer said she was driving at a rate of 48 miles per hour

When checking the accuracy of her speedometer, an Automotive Specialist recorded her speed at 50 miles per hour

The percent error is given by formula:

Percent error is the difference between a measured and known value, divided by the known value, multiplied by 100%

$\text{Percent error } = \frac{\text{experimental-theoretical}}{theoretical} \times 100$

From given,

Experimental value = 50

Theoretical value = 48

Substituting the values in formula, we get,

$Percent\ Error = \frac{50-48}{48} \times 100\\\\Percent\ Error = \frac{2}{48} \times 100\\\\Percent\ Error = 4.167$

Thus the percent error is 4.167 %

8 0

3 years ago

Help asap thx u and plz if u do help say the number for the ancer 1-5

lesya692 [45]

1b,
2b,
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4 0

3 years ago

Read 2 more answers

A particular convex pentagon has two congruent, acute angles. The measure of each of the other interior angles is equal to the s

NNADVOKAT [17]

1. First, you must apply the formula for calculate the sum of the interior angles of a regular polygon, which is shown below:

(n-2) × 180°

"n" is the number of sides of the polygon (n=5).

2. Then, the sum of the interior angles of the pentagon, is:

(5-2)x180°=540°

3. The problem says that the measure of each of the other interior angles is equal to the sum of the measures of the two acute angles and now you know that the sum of all the angles is 540°, then, you have:

α+α+2α+2α+2α=540°

8α=540°

α=540°/8

α=67.5°

4. Finally, the larger angle is:

2α=2(67.5°)=135°

5. Therefore, the answer is: 135°

6 0

3 years ago

JELP HURRY !!!!!!!!!

Tems11 [23]

You should be able to set up a proportion between the sides something like (18+x)/x=(56+21)/56

5 0

3 years ago