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alexgriva [62]
3 years ago
13

On a math test, the highest grade is 38 points higher than the lowest grade. Which of the following expressions represents the a

verage of the two grades?
A... (x+x) / 2
B... (x+(x+38)) / 2
C... x+(x+38) / 2
D... 2(x+(x+38))
Mathematics
2 answers:
Greeley [361]3 years ago
7 0

Answer:

B

Step-by-step explanation:

Alinara [238K]3 years ago
5 0

Answer:

the answer is b I got it right!

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Harper has $14 in her piggy bank. Her mom pays her $12 for chores. How much does Harper now have in the piggy bank?
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Answer:

26

Step-by-step explanation:

14+12=26

1+1=2

4+2=6

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A kilometer is 3,280.8 feet. how many feet long is a meter?
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On a clear day you can see about 25.2 miles from the upper observation platform of the Eiffel tower in Paris. Using the formula
fredd [130]

Answer:

D. 914 feet

Step-by-step explanation:

We are given the distance that a person can see on a clear day from the upper observation platform of the Eiffel tower in Paris. We are then required to estimate the height of the upper observation platform using the formula;

d=\frac{5}{6}\sqrt{h}

Where d is the distance and h the height of the upper observation platform. The first step would be to solve for h, that is make h the subject of the formula in the above equation;

We multiply both sides of the equation by the reciprocal of 5/6 which is 6/5;

\sqrt{h}=\frac{6}{5}d

The next step is to eliminate the square root on the Left Hand Side of the equation by squaring both sides;

h=1.44d^{2}

Given d is 25.2, h becomes;

h=1.44*25.2^{2}\\h=914.4576

To the nearest whole number, h becomes 914

8 0
3 years ago
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When the vat rate is 15% a customer pays 1610 to buy an electric iron .find the cost of the iron without vat (solve by video)
Schach [20]

Answer:

Cost without vat is 1,368.5

Step-by-step explanation:

Here, we want to know the cost of the iron without the vat.

From the question , we can see that 15% VAT brought the cost to 1610.

This means that the original cost without vat is 100% -15% = 85% of the total

Thus;

85/100 * 1610 is the cost without vat

And that is;

136850/100 = 1,368.5

5 0
4 years ago
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