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3 years ago

What is the length of side d?

Mathematics

1 answer:

inessss [21]3 years ago

8 0

Answer: A

Explanation:

Use formula a^2 + b^2 = c^2 but in this case letter “d” will substitute for “b”

Since 13 is hypotenuse, 13 is going to be the letter c

12 is “a” because we don’t know “d”

So it’s 12^2 + d^2 = 13^2

Simplify: 144 + d^2 = 169

Subtract to isolate d^2: d^2 = 25

Take square root from both sides to isolate d: d = 5

Answer: A

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At a school with 100 students, 33 were taking Arabic, 39 Bulgarian, and 40 Chinese. 14 students take only Arabic, 19 take on

barxatty [35]

Answer:

6 students are taking all three

20 students are taking none.

Step-by-step explanation:

Please check image attached.

From the total of 33 that are taking Arabic, 14 only take Arabic and 13 take Arabic and Bulgarian (b + d), so the students that take only Arabic and Chinese together is:

a = 33 - 14 - 13 = 6

From the total of 39 that are taking Bulgarian, 19 only take Bulgarian and 13 take Arabic and Bulgarian, so the students that take only Bulgarian and Chinese together is:

c = 39 - 19 - 13 = 7

Now, from the total of 40 that are taking Chinese, 21 only take Chinese, 6 take only Arabic and Chinese and 7 take only Bulgarian and Chinese, so the number of students that take all three languages is:

d = 40 - 21 - 6 - 7 = 6 students

The number of students that take any language is 14 + 19 + 21 + 6 + 7 + 13 = 80 students, so 100 - 80 = 20 students take none of the three languages

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4 years ago

Can you do this 6917X917X518:9173-10+3=

hodyreva [135]

Yes, I can do that using my pencil or my calculator.

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4 years ago

Standard form of the equation that goes through (1, 2) with a slope of 7, please!

Radda [10]

Answer:

7x - y = 5

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Obtain the equation in point- slope form and rearrange into standard form.

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

Here m = 7 and (a, b) = (1, 2)

y - 2 = 7(x - 1) ← in point- slope form

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3 years ago

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blondinia [14]

First we find the total area:
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Then we must find the cost,
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Be sure to thank and rate brainlist

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3 years ago

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9966 [12]

The answer is 6 eggs per hen. You divide 72 by 12 to get 6. Hope it helps.

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3 years ago