All categories

3 years ago

Really need help with 5,6and 7

Mathematics

1 answer:

vesna_86 [32]3 years ago

3 0

5c
6b
3.212x10^3
.............................

You might be interested in

6 to the power of 2 equal ?

EleoNora [17]

Answer:

Step-by-step explanation:

Whenever something is to the power of 2, just think of the number multiplied twice :) Hoped this helped.

6 0

3 years ago

Un cono ha l'area laterale di 255 pigreco cm^2, l'apotema di 17 cm e pesa 900 pigreco g. Calcola il peso specifico del materiale

valkas [14]

Answer:

The specific weight is $1.5\frac{g}{cm^{3}}$

Step-by-step explanation:

The question in English

A cone has a lateral area of 255 pi cm^2, an apothem of 17 cm and weighs 900 pi g. It calculates the specific weight of the material of which it is composed

step 1

Find the radius of the cone

we know that

The lateral area of a cone is equal to

$LA=\pi rl$

we have

$LA=255\pi\ cm^{2}$

$l=17\ cm$

substitute the values

$255\pi=\pi r(17)$

Simplify

$255=r(17)$

$r=255/(17)=15\ cm$

step 2

Find the height of the cone

Applying the Pythagoras Theorem

$l^{2} =r^{2} +h^{2}$

substitute the values and solve for h

$17^{2} =15^{2} +h^{2}$

$h^{2}=17^{2}-15^{2}$

$h^{2}=64$

$h=8\ cm$

step 3

Find the volume of the cone

The volume of the cone is equal to

$V=\frac{1}{3}\pi r^{2}h$

substitute the values

$V=\frac{1}{3}\pi (15)^{2}(8)$

$V=600\pi\ cm^{3}$

step 4

Find the specific weight

Divide the mass by the volume

$\frac{900\pi }{600\pi}=1.5\frac{g}{cm^{3}}$

4 0

4 years ago

Alaina surveyed students on her bus about their homework.The data she gathered is shown in this two-way table.

Varvara68 [4.7K]

YOUR ANSWER MIGHT BE 2

5 0

3 years ago

Read 2 more answers

What is the shape of this distribution

Len [333]

Answer is B. Hope this helps
Could I please get brainliest answer?

3 0

3 years ago

If y is 20 when x is 5 find x when y is 60

Verdich [7]

Answer:

Step-by-step explanation:

If y is 20 when x is 5 then x is always 1/4 of y

60*(1/4)=15

5 0

3 years ago

Read 2 more answers