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3 years ago

What length and width of a rectangle makes a 110 units perimeter and 350 units^2 area

Mathematics

1 answer:

butalik [34]3 years ago

4 0

You need to do the Pythagorean therm , you know the a^2+b^2=c^2

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The diagonal of a square is 15 inches. find the area of the square

kondor19780726 [428]

Think of the square as a rhombus:
$\frac{15 \times 15}{2} = \frac{225}{2} = 225 \div 2 = 112.5$
so 112.5 square inches

you can ask if it wasn't clear enough, I will explain.
Have a nice day!!!!

3 0

4 years ago

50 POINTS

Marina86 [1]

vi is going in the positive direction (up). (That's my choice). a (acceleration) is going in the minus direction (down). The directions could be reversed.

Givens

vi = 160 ft/s

vf = 0 (the rocket stops at the maximum height.)

a = - 9.81 m/s

t = ????

Remark

YOu have 4 parameters between the givens and what you want to solve. Only 1 equation will relate those 4. Always always list your givens with these problems so you can pick the right equation.

Equation

a = (vf - vi)/t

Solve

- 32 = (0 - 160)/t Multiply both sides by t

-32 * t = - 160 Divide by -32

t = - 160/-32

t = 5

You will also need to solve for the height to answer part B

t = 5

vi = 160 m/s

a = - 32

d = ???

d = vi*t + 1/2 a t^2

d = 160*5 + 1/2 * - 32 * 5^2

d = 800 - 400

d = 400 feet

Part B

You are at the maximum height. vi is 0 this time because you are starting to descend.

vi = 0

a = 32 m/s^2

d = 400 feet

t = ??

formula

d = vi*t + 1/2 a t^2

400 = 0 + 1/2 * 32 * t^2

400 = 16 * t^2

400/16 = t^2

t^2 = 25

t = 5 sec

The free fall takes the same amount of time to come down as it did to go up. Sort of an amazing result.

6 0

4 years ago

How do the values compare? Order the values from least to greatest.

Katena32 [7]

Answer for this question is

5 0

2 years ago

Read 2 more answers

Margie has $100. She wants to buy a book for $20 and some CDs for $15 each. At most, how many CDs can Margie buy?

omeli [17]

Margie can buy 5 CDs at most.

4 0

3 years ago

In sugar beet, there is 21% of sugar. How much sugar beet do you need in order to get 7,413 tons of sugar?

almond37 [142]

35300 tons of sugar beet we need in order to get 7,413 tons of sugar.

<u>Step-by-step explanation:</u>

Given that in sugar beet, there is 21% of sugar. Need to find out how much sugar beet we need in order to get 7,413 tons of sugar. Let we need x tone of sugar beet. So, according to the asked data, we have

$21 \% \text { of } x=7413$

$\frac{21}{100} \times x=7413$

$0.21 \times x=7413$

$x=\frac{7413}{0.21}$

x = 35300 tones

4 0

4 years ago