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3 years ago

Evaluate 10a + 7 if a = 1/5.

Mathematics

1 answer:

gladu [14]3 years ago

8 0

Answer:

Step-by-step explanation:

We know that a=1/5. Therefore, we can substitute 1/5 in for a into the expression.

10a + 7

10(1/5)+7 <em>Multiply 1/5 and 10</em>

2+7 <em>Add 2 and 7 </em>

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Square root of 112p^2

Brut [27]

Answer:

4p√7

Step-by-step explanation:

8 0

3 years ago

Suppose the height of the pyramid is 20 yards. What is the pyramid's volume?

DedPeter [7]

Answer : The correct option is, (B) 1500 cubic yards.

Step-by-step explanation :

Formula used to calculate the volume of square pyramid is:

$V=\frac{a^2\times h}{3}$

where,

V = volume of pyramid

a = base edge of pyramid

h = height of pyramid

Given:

Base edge of pyramid = 15 yards

Height of pyramid = 20 yards

Now putting all the given values in the above formula, we get:

$V=\frac{a^2\times h}{3}$

$V=\frac{(15\text{ yrads})^2\times (20\text{ yards})}{3}$

$V=1500\text{ yards}^3$

Therefore, the volume of pyramid is 1500 cubic yards.

5 0

3 years ago

Find the missing length

jasenka [17]

Answer: 15

Step-by-step explanation:

For this you will have to use pythagoras’ theorem.

The formula for the shorter side of this triangle is u²=c²-b² (or in this case u²=17²-8²).

17²=289

8²=64

The formula becomes u²=289-64 or u²=225

Then to find u on its own you have to square root 225.

The square root of 225 is 15.

3 0

3 years ago

Se tiene que pegar encaje aun aro de 35 centimetros de diametro¿Cuanto encaje se necesita para cubrirlo?

nalin [4]

Cual es la formula?
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4 0

3 years ago

Read 2 more answers

The oldest child in a family of four children is twice as old as the yougest. The two middle children are 12 and 16 years old. I

Vladimir [108]

Four children average is 15.25 so ages must add to 61
61-12-16=33
11 and 22 go into 33
Youngest is 11

6 0

2 years ago