4 years ago

There are 180 girls in a mixed school. if the ratio of girls to boys is 4 : 3,

Mathematics

1 answer:

Gennadij [26K]4 years ago

6 0

Answer:

that is the solution to the question

You might be interested in

The perimeter of a rectangle room is 250 feet the length is 35 feet less than three times the width what is the length of the ro

raketka [301]

Perimeter of rectangle:
P = 2(L + W)
P = 250 (given)
L = 3W - 35 (given)

250 = 2(3W -35 + W) ↔ 125 = 4W - 35

4W = 125 +35 =160 And W = 40 ft
And L = 3x40 - 35 = 85 ft

6 0

3 years ago

The volume of a sphere is 1928π m3 . What is the surface area of the sphere to the nearest tenth?

Rufina [12.5K]

$\bf \textit{volume of a sphere}\\\\
V=\cfrac{4}{3}\pi r^3\qquad \begin{cases}
r=radius\\
------\\
V=1928\pi 
\end{cases}\implies 1928\pi =\cfrac{4}{3}\pi r^3
\\\\\\
1928\pi =\cfrac{4\pi r^3}{3}\implies \cfrac{3\cdot 1928\pi }{4\pi }
=r^3\implies 1446=r^3
\\\\\\
\sqrt[3]{1446}=r\\\\
-------------------------------\\\\
\textit{surface area of a sphere}\\\\
S=4\pi r^2\qquad r=\sqrt[3]{1446}\implies S=4\cdot \pi \cdot \sqrt[3]{1446^2}$

8 0

3 years ago

Read 2 more answers

The length of a room is 8 feet more than twice width. If it takes 124 feet of molding to go around the perimeter of the room, wh

Aleksandr-060686 [28]

Answer:

Here's how we do it.

Let's say...

Width=W

Length=L=2w+8

Perimeter=2w+2(2w+8)=2w+4w+16=6w+16

6w=108

w=18

Now we know our width is 18...

L=(124-(18*2))/2=(124-36)/2=88/2=44

In conclusion,...

Length=44

Width=18

I hope this helps y'all out!

4 0

4 years ago

What is the slope of each line? Line A: y = one-half x minus 4 Line B: y = 2 x minus 3

lianna [129]

Answer:

1/2

2/1

use the method rise over run

Step-by-step explanation:

7 0

3 years ago

Can someone help me please !!!

Gala2k [10]

Answer:

I think the answer is y = 21

7 0

4 years ago