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3 years ago

Definition of mean In mathe

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

8 0

An average of values added up then divided by their number.

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Should be fairly easy..

Harlamova29_29 [7]

Answer:

<u>72 cm²</u>

Step-by-step explanation:

Area of a ∆ = 1/2 × b × h

b = 12 cm

h = 12 cm

Area = 1/2 × 12 × 12

= 1/2 × 144

= <u>72 cm²</u>

4 0

3 years ago

The field inside a running track is made up of a rectangle that is 84.39 m long and 73 m wide, together with a half-circle at ea

ioda

Answer:

The distance around the inside is 199.44 m.

Step-by-step explanation:

Given that,

Length = 84.39 m

Width = 9.76 m

Suppose, all the way around and 73 m wide.

We know that,

Perimeter of half circle is

$perimeter = \pi r$

We need to calculate the inner radius of the circle

Using formula of radius

$r=\dfrac{D}{2}$

Put the value into the formula

$r=\dfrac{9.76}{2}$

$r=4.88\ m$

We need to calculate the distance around the inside

Using formula of distance

Distance around the inside= two inner perimeter of the circle+two length of rectangle

$D=2\pi r+2l$

Put the value into the formula

$D=2\pi\times4.88+2\times84.39$

$D=199.44\ m$

Hence, The distance around the inside is 199.44 m.

6 0

3 years ago

PLZZZZZ HELPPP ME!!!!

Ket [755]

I think is the top one!!!!!!!

8 0

3 years ago

In a dass of 32 students there are 11 males. Find the ratio of males to females

Levart [38]

$\huge{\boxed{11:21}}$

First, find the number of females in the class. $32-11=21$

Then, just write the ratio. $\text{11 males:21 females}=\boxed{11:21}$

3 0

4 years ago

The weight of 72 books is 9 kg.what is the weight of 80 such books? How many such books would weigh 6kg?

Alex17521 [72]

9 divided by 72 = 0.125
0.125 is the weight of one book
0.125 times 80 = 10kg.
So 80 books weight 10kg.
72 divided by 9 = 8 books make up 1 kg.
8 times 6 =48

4 0

3 years ago