3 years ago

What is the answer for this question 20 x 70

Mathematics

1 answer:

Mice21 [21]3 years ago

6 0

Answer:

1400

Step-by-step explanation:

Because

7 x 2 = 14

Then add on the two zeroes at the end

1400

You might be interested in

What is the answer for number 10?

barxatty [35]

Answer is a to the question

4 0

2 years ago

Read 2 more answers

10 POINTS AND WILL GIVE BRAINLIEST <br><br>Given: j(x) = -2 (3/2)^x. Find j(0).

FrozenT [24]

Answer:

Step-by-step explanation:

j(x) = -2 (3/2)^x

j(0) = -2(3/2)^0

-2(0)

8 0

3 years ago

A square pyramid has a base with an area of 20 square meters, and its lateral faces have a slant height of x meters. Sydney is c

svetoff [14.1K]

1. Consider the pyramid ABCDE in the figure 1 attached:

Each side of the square base equals $\sqrt{20} = \sqrt{4*5} = \sqrt{4}* \sqrt{5}=2 \sqrt{5}$ (units)

Area of 1 lateral side of pyramid ABCDE is $\frac{1}{2}* 2 \sqrt{5}*x=\sqrt{5}x$

so the total lateral area is $4\sqrt{5}x$ (units squared)

and the total surface area is $20+4\sqrt{5}x$ (units squared)

2. Now consider the second figure KLMNP, Sydney's pyramid:

The lateral area is $4* \frac{1}{2}* 4 \sqrt{5} *2x=16 \sqrt{5}x$

so the total area of the second pyramid is $20+16 \sqrt{5}x$

So 2 things can be said about the areas:

i) the lateral area of Sydney's pyramid is $\frac{16 \sqrt{5}x}{4\sqrt{5}x} =4$ times larger than the lateral area of the original pyramid.

ii) The total area of Sydney's pyramid is $(20+16 \sqrt{5}x)-(20+4\sqrt{5}x)=12\sqrt{5}x$ units squared larger than the total area of the original pyramid.