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Rufina [12.5K]
3 years ago
7

There are 27 students in Manny's math class. Fourteen of the students are females. What is the ratio of males to females in Mann

y's math class?
Mathematics
1 answer:
masha68 [24]3 years ago
7 0

Answer:

13:14

Step-by-step explanation:

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Help I do not understand how to find the area of circles
kupik [55]
The formula for the area of a circle is a = <span>πr², r being the radius.

To tackle this problem, find the area of the square and then subtract the area if the circle:

Area of square = 20 * 20 = 400
Area of circle = </span><span>π(10)² = 100</span><span>π = 314

Area of square - area of circle = 400 - 314 = 86 m²

Hope this helps!
</span>


7 0
3 years ago
10. rhombus abcd has vertices at a(-2, 7), b(8, 7), c(2, -1), and d (-8, -1).
horrorfan [7]

Answer: 80

Step-by-step explanation:

We can use the formula A=\frac{d_{1}d_{2}}{2}, where d_{1}, d_{2} are the lengths of the diagonals.

By the distance formula,

AC=\sqrt{(-2-2)^{2}+(-1-7)^{2}}=\sqrt{16+64}=4\sqrt{5}\\BD=\sqrt{(-8-8)^{2}+(-1-7)^{2}}=\sqrt{256+64}=8\sqrt{5}

So, the area is \frac{(4\sqrt{5})(8\sqrt{5})}{2}=\boxed{80}

6 0
2 years ago
What’s the circumference and the area for 4 in
Paladinen [302]

Answer:

C = 25.12 , A = 50.24

Step-by-step explanation:

C = \pi d\\A = \pi r^{2}

C = 8 * 3.14 = 25.12

A = (4*4) * 3.14 = 50.24

5 0
3 years ago
Write a expression that uses partial products to multiply 8 x 64
krok68 [10]
8 x 64
=64 x 2 x 4
=128 x 2 x 2 
=256 x 2
=512
3 0
3 years ago
What is this answer im being timed so plz help
olchik [2.2K]

Answer:

(Kind of cheating but since you're timed I'm just gonna five you the answer:

3/11

Step-by-step explanation:

I got this by guessing a bit, I used what varibles I had and 0.27 & 3 and used them.

So 3/0.27 = 11.11 (Repeating) so then I rounded this to a whole number,

3/11 = 0.27 (Repeating)

6 0
3 years ago
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