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3 years ago

How do i find the surface area?

1 answer:

4 0

Surface area is what it seems to be. All of the area of the solid's faces together. Like a cube, just find the areas of all of the squares that make the cube then add them together.

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Write your question here (Keep it simple and clear to get the best answer)if use the spinner 200 times how many pink colour woul

notka56 [123]

Answer: 40 times.

Step-by-step explanation:

If the probability in a sigle spin of getting the colour pink is p = 0.2

This means that in 0.2*100% = 20% of the spins we should see the colour pink.

Then, out of 200 spins, the 20% of 200 is

(20%/100%)*200 = 0.2*200 = 40

This means that out of 200 spins, in around 40 of them we will se the colour pink.

7 0

2 years ago

A pancake recipe require 1 2/3 cups of flour to make 20 pancakes and you have 9 cups of flour.

Leokris [45]

<h2>Solution (a) :-</h2>

Quantity of flour needed to make 20 pancakes =

$= 1 \frac{2}{3} \:$

$= \frac{3 \times 1 + 2}{3}$

$= \frac{5}{3} \: cups \: of \: flour$

Then , number of pancakes that can be made from 1 cup of floor :-

$20 \div \frac{5}{3}$

$20 \times \frac{3}{5}$

$\frac{60}{5}$

$= 12 \: pancakes$ .

Therefore , 12 pancakes can be made from 1 cup of floor .

<h2>Solution (b) :-</h2>

Number of pancakes that can be made with 1 cup of flour = 12 pancakes

Number of pancakes that can be made with 9 cups of flour :-

= 9 × 12

= 108 pancakes

Therefore , I can make 108 pancakes with 9 cups of flour .

<h2>Solution (c) :-</h2>

Yes , I have enough flour to make 100 pancakes . I say this because :-

With one cup of flour I can make = 12 pancakes

With 9 cups of flour I can make =

= 9 × 12

= 108 pancakes

As I can make 108 pancakes with 9 cups of flour , I can conclude that I have enough flour to make 100 pancakes .

3 0

2 years ago

I learn maths and I don't know how to solve this problem.

Lyrx [107]

Answer:

As we get closer to x=-3, the limit is approaches -1, on both sides of -3 so this is a good limit so c is 8.

Step-by-step explanation:

In order for a limit to exists, the left side limit must exist and right side limit must exist and on top of that, they must be equal to each other.

In this case, this a piece wise function and by definition of a limit that exist, the limit of this piece wise function as x approaches 3 from either side, must be equal.

We let x=-3 for the top equation.

$( - 3) {}^{2} - 10 = - 1$