What is the formula for finding the area of a circle with radius r?

describe two different ways that you could find the product 8 times 997 using mental math. Find the product and explain why your

Free_Kalibri [48]

Answer:

First in your head multiply 8 by 7. this equals 56. now multiply 8 by 9 twice since there is two 9's. now you have two 72's. Add the 2's together from both 72's. now your numbers are 70, 70, 56 and 4. Add the four to your 5 which is now 96. split 96 between the 70's. not dividing just the two numbers. now you have 79, and 76. put together your numbers and your answer is 7976.

Step-by-step explanation:

3 0

3 years ago

A box is to constructed with a rectangular base and a height of 5cm. If the rectangular base must have a perimeter of 28cm, whic

erastovalidia [21]

Bearing in mind that a rectangle has a perimeter of length + length + width + width.

P = perimeter
L = length
x=width

P = 2L + 2x
P = 2(L+x) <==== perimeter of the base of the box.

check the picture below.

3 0

2 years ago

Read 2 more answers

Find the slope of the line through each pair of points.

Fudgin [204]

<h2>Answer: slope = ¹¹/₁₃ </h2><h3>Step-by-step explanation: </h3>

The question gives us two points, (−13, −19) & (13, 3), from which we can find the slope and later the equation of the line.

Finding the Slope

The slope of the line (m) = (y₂ - y₁) ÷ (x₂ - x₁)

= ((3 - (-19)) ÷ (13 - (-13))

= 22 ÷ 26

= ¹¹/₁₃

<em>Checking my answer:</em>

<em>We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line. If the line passes through both of the points then we calculated the slope correctly.</em>

⇒ y + 19 = ¹¹/₁₃ (x + 13)

<em>I have included a Desmos Graph that I graphed using the information equation (including the slope) and the points given. </em>

7 0

2 years ago

Sunhee had four plastic shapes a square, a circle, and a pentagon in how many ways can she line up the four shapes of the circle

julsineya [31]

Answer:

only three shapes are mentioned.

But anyhow, 4 shapes allow the following reasoning...

you can start lining up with any of the for shapes, so you have 4 possibilities, for the second position you have 3 possibilities, for the third 2 and for the last only 1.

so 4*3*2*1= 24 possible ways

but with the added rule to keep the circle and the square apart, we have to reduce the number.

by the same step-by-step reasoning we get

4 possibilities for the 1st item

only 2 possibilities for the 2nd item

(if 1st is square or circle, the other one's not an option, if it's not we have to choose one of them to not place them both at point 3 and 4)

only 1 choice for the 3rd item

(reasoning as above, if 2nd is square or circle, we have to the only other, if it isn't, we can put it here at 3rd position)

plus scenarios where either square or circle are on 1st point, the other's on 4th.

I guess that makes 14 possible arrangements

5 0

2 years ago

Statistics urgent<br> Use n=6 and p=0.85 to complete

Bas_tet [7]

Answer:

I cant see anything on that picture. Wish I could help bruv. I wish I could help. It's a shame innit.

7 0

2 years ago