3 years ago

25% of what equals 21 ?

Mathematics

1 answer:

vaieri [72.5K]3 years ago

6 0

84, since 25% equals 1/4 multiply 21 by 4 to get your answer.

You might be interested in

Uh what’s 9 + 10 + 9 - 10

alexandr1967 [171]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

An arc with length 5 pi over 4 inches is formed by a 15 degree central angle what is the radius of the circle

Natalka [10]

Answer:

Radius of the circle is 15 inches.

Step-by-step explanation:

Relation between length of arc, radius and the angle subtended by the arc on center is:

$\theta = \dfrac{l}{r} ..... (1)$

where $\theta$ is the central angle in radians subtended by arc

$l$ is the length of arc

$r$ is the radius of arc

We are Given the following details:

$l = \dfrac{5\pi}{4}\ inch$

$\theta = 15^\circ$

We know that $\pi \ radians = 180 ^\circ$

Converting $\theta$ to radians:

$\theta =\dfrac{\pi}{180} \times 15$ radians

Putting the values of $\theta$ and $l$ to find the value of $r$

$\dfrac{\pi}{180} \times 15 = \dfrac{5\pi}{4r}\\\Rightarrow r = \dfrac{45}{3} \\\Rightarrow r = 15 \ inches$

Hence, Radius of the circle is 15 inches.

6 0

3 years ago

Apple trees need to be planted in an orchard. The process takes two hours per tree. The orchard owner wants to find out how many

Mkey [24]

Answer:

Graph C. Hope this is correct!!!

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Need help this is my last chance

yuradex [85]

I don’t know the answer but Don’t try to open that link. I’ve seen a lot of people using it. Stay safe:)

3 0

3 years ago

Read 2 more answers

Sandy makes 15.5 gallons of lemonade. She must refill the container after filling 100 drink cups. How much lemonade was in each

faltersainse [42]

100 divided by 15.5 = 0.155

5 0

3 years ago