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3 years ago

The air temperature drops from 94°F to 72°F in 15 minutes what is the change in temperature

Mathematics

1 answer:

mamaluj [8]3 years ago

7 0

The temperature drops 22°F in 15 minutes.

22°F / 15 = 1.46°F per minute

Hope I helped!

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Ms. Omar runs the School tennis club. She has a bin of tennis balls and rackets. For every 5 tennis balls in the bin, there are

atroni [7]

Answer:

Step-by-step explanation:

5:3. there are 5 balls, and 3 rackets

7 0

3 years ago

If the area of the triangle is 10cm?, find the height. 5cm

Anna71 [15]

Answer:

4cm

Step-by-step explanation:

The formula for area of a triangle is hxb/2 so plug in the the area so the equation looks like hx5/2=10 and you get 4 for height

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3 years ago

Ken has a rectangular shaped vegetable garden that is 15 feet by 9 feet. He would like to increase the length and width by the s

tigry1 [53]

The current area is 15 x 9 = 135 square feet.

He wants to increase both the length and width by X:

Set up an equation:

(15 +x) * (9 +x) = 135 * 2

Simplify :

x^2 + 24x + 135 = 270

Subtract 270 from both sides:

x^2 + 24x - 135 = 0

Use the quadratic formula to solve for x:

-24 +/- √(24^2 - 4(1*-135) / 2*1

x = 4.7 or -28.7

The answer has to be a positive value, so x = 4.7 feet.

8 0

3 years ago

Emily ran her first lap in 75 seconds she ran her second lap in 69 seconds using percentages how much better was her second lap

julsineya [31]

Answer:

Her second lap was 8% better when compared to her first lap.

Step-by-step explanation:

Given:

Emily ran her first lap in 75 seconds she ran her second lap in 69 seconds.

Now, to find how much better was her second lap when compared to her first lap.

Emily ran her first lap in 75 seconds.

Emily ran her second lap in 69 seconds.

So, we get the difference in seconds:

$75-69=6\ seconds.$

Thus, in her second lap she was 6 seconds better than first.

Now, to get the percentage of her first lap better than second:

$\frac{6}{75}\times 100$

$=0.08\times 100$

$=8\%.$

Therefore, her second lap was 8% better when compared to her first lap.

7 0

3 years ago

Which is a factor of 3x^2 − 33x + 84?

horsena [70]

Answer:

(x-7) (x-4)

Step-by-step explanation:

3x²-33x+84 can be factored into

3 (x-7) (x-4)

4 0

3 years ago