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4 years ago

14

Jessica is going to paint her patio. It is a rectangle measuring 7ft x 4ft x 5ft what is the volume, if volume=length x width x

height

1 answer:

Phoenix [80]4 years ago

7 0

7×4= 28

28×5=140 and that's your answer

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How many twentieths equal three-fifths

Nostrana [21]

Answer:

um 2

Step-by-step explanation:

8 0

4 years ago

What is the net force here and what direction will the object accelerate ?

Contact [7]

There is 100 N pushing the box to the right and 10 N pushing the box to the left

since there is force being applied in opposite directions, the net force is found by subtracting the 2

100 - 10 = 90 N ( Net Force)

and because the higher force is pushing the box to the right, the direction will accelerate to the right.
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6 0

4 years ago

Show work pleaseeeeeee

aleksley [76]

Answer:

527.52 square inches.

Step-by-step explanation:

The formula for the surface area of a cylinder is $2\pi r h + 2\pi r ^2$ , which in this case is $2\pi \cdot 7 \cdot 5 + 2\pi \cdot 49\approx 527.52$ square inches. Hope this helps!

5 0

3 years ago

Read 2 more answers

If f(x) = 2x2 + 1, what is f(x) when x = 3?<br> O 1<br> O 7<br> O 13<br> O 19

Slav-nsk [51]

Answer:

19

Step-by-step explanation:

f(x) = 2x^2 + 1

Let x= 3

f(3) = 2 * (3)^2 +1

Exponents first

= 2 * 9+1

Then multiply

= 18+1

Add

= 19

6 0

3 years ago

If you were asked to convert 75 m/s to km/hr, which conversation factors would you need to use. Select all that apply.

Vilka [71]

Answer:

You need to use A, B, and C.

Step-by-step explanation:

Let's treat the units as variables. I'll illustrate why in a moment.

$75 m/s =\frac{75m}{1s} \\\\\frac{75m}{1s}*\frac{1km}{1000m}=\frac{75m*km}{1000m*s}\\\\\frac{75m*km}{1000m*s}*\frac{60s}{1min}=\frac{(75*60)m*km*s}{1000m*s*min}\\\\\frac{4500m*km*s}{1000m*s*min}*\frac{60min}{1h}=\frac{4500m*km*s*min}{1000m*s*min*h}$

Now, as you can see, we have a giant mess of units to deal with. This is where we can treat the units like separate variables and use a bit of algebra to make our lives easier:

$\frac{4500m*km*s*min}{1000m*s*min*h}=\frac{4500}{1000}*\frac{m*km*s*min}{m*s*min*h}\\\\\frac{4500}{1000}*\frac{m*km*s*min}{m*s*min*h}=\frac{4500}{1000}*\frac{m}{m}*\frac{km}{1}*\frac{s}{s}*\frac{min}{min}*\frac{1}{h}\\\\\frac{4500}{1000}*\frac{m}{m}*\frac{km}{1}*\frac{s}{s}*\frac{min}{min}*\frac{1}{h}=\frac{4500}{1000}*\frac{m*km*s*min}{m*s*min*h}=\frac{4500}{1000}*1*\frac{km}{1}*1*1*\frac{1}{h}\\\\\frac{4500}{1000}*1*\frac{km}{1}*1*1*\frac{1}{h}=\frac{4500}{1000}*\frac{km}{h}\\$

$\frac{4500}{1000}*\frac{km}{h}=\frac{45}{1}*\frac{km}{h}=45 \frac{km}{h}$

So, backtracking through that entire mess, we had to use $\frac{1km}{1000m} ,\frac{60s}{1min} ,\frac{60min}{1h}$ .

These correspond to the options of A, C, and B accordingly.

So you need to use A, B, and C.

8 0

3 years ago