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saw5 [17]
2 years ago
8

21 is 75% percent of what number?

Mathematics
2 answers:
Gekata [30.6K]2 years ago
7 0

Answer:

28

Step-by-step explanation:

21 is 75% percent of 28!

I hope this helps <3

Pepsi [2]2 years ago
7 0

Answer:

28

Step-by-step explanation:

i don't know how to explain it exactly

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5x^{4}-7x^{3}-5x^{2}+5x+1-0
den301095 [7]

Answer:

5x^4 -7x^3-5x^2+5x+1

Step-by-step explanation:

Hey!

You would just add all the numbers up, and by making sure that you combine all like terms. In this case it is just 1-0 = 1 and so the solution would be the same as your question but with a 1 and you would get rid of the -0.

Hope this helps!

7 0
3 years ago
What is the correct value of x in the triangle
seraphim [82]

Answer: 4

Step-by-step explanation:

Using the 30°-60°-90° Triangle Theorem we know that the base side is half of the hypotenuse. That means it is half of 8 which is 4

4 0
3 years ago
What is f(2) = 2x -6
Dennis_Churaev [7]

Answer:

f(2) = -2

Step-by-step explanation:

f(2) = 2x - 6

f(2) = 2(2) - 6

f(2) = 4 - 6

f(2) = -2

4 0
3 years ago
Explain how the sum and difference formula cos(A+/- B) = cosA cosB -/+ sinA sinB could be useful?
serg [7]
One way it's useful is in the application of phasors in physics. Phasors require you to add up vectors of two different angles, so the cosine angle addition formula can be used if you already know the cosine and sine of the original vector angles.
6 0
3 years ago
Read 2 more answers
Please answer i need help
labwork [276]

Answer:

first answer is 9.84

Step-by-step explanation:

9.84 is the square root of 97, rounded to the nearest hundredth.

the legs measure 9 x 9 and 4 x 4 = 81 and 16.

81 + 16 = 97, so your answer is the square root of 27, which rounded to the nearest hundredth, equals 9.84. Rounding towards the nearest whole, 10 would be your best bet.

hope this helps!!

3 0
3 years ago
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