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8090 [49]
2 years ago
8

7x3 how much???????????????????????????????????????

Mathematics
2 answers:
elena55 [62]2 years ago
8 0
7 x 3= 21 you can also use a calculator to help you
kodGreya [7K]2 years ago
7 0

Answer: 21 is the answer

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Pls kinda need help <br> lolol
alukav5142 [94]
I think that the answer is A.
3 0
3 years ago
A car travelled 72 km in 3/4 h. If the car is travelling at a constant rate how far will the car travel in one hour?
Anvisha [2.4K]

Answer:

96 km

Step-by-step explanation:

72/3 is 24. When yo add 24 to 72 you get 96km.

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3 years ago
Answer to this quest
Drupady [299]

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Point A to point F and point I to point H would have the ratio of 2:1.

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3 years ago
Find the measurement of 0 in radians
Lina20 [59]

Answer:

5 pi/12

Step-by-step explanation:

To change degrees to radians, multiply by pi/180

75* pi/180

divide the top and bottom by 15

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6 0
3 years ago
Chloe and Libby want to tie Ryan to a bunch of approximately spherical helium balloons of diameter 0.3m. The volume of each ball
dem82 [27]

Answer:  Aproximately 2,525 balloons

Step-by-step explanation:

 1. Find the volume of a balloon with the formula given in the problem, where r is the radius (r=\frac{0.3m}{2}=0.15m), then:

V=4(0.15m)^{3}=0.0135m^{3}

2. Convert the volume from m³ to lliters by multiplying it by 1,000:

V=0.0135m^{3}*1000=13.5L

3. You know that that 1 liter of helium can lift 1 gram and that Ryan weighs 5 stone and 5 pounds. So you must make the following conversions:

1 g=0.0022 lb

From 5 stones to pounds

(5stone)(\frac{14pounds}{1stone})=70pounds=70lbs

4. Then Ryan's weigh is:

5lb+70lb=75lb

5. Then, if 1 liter of helium can lift 0.0022 lb, to lift 75 lb (which is the weight of Ryan) they need:

\frac{75lb*1L}{0.0022lb}=34,090.90L

6. Then, to calculate the aproximated number of balloons they need to make him float (which can call n), you must  divide the liters of helium needed to lift the weight of Ryan by the volume of a balloon, then the result is:

n=\frac{34,090.90L}{13.5L}

n=2,525.25≈2,525 balloons.

5 0
3 years ago
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