All categories

3 years ago

Please help :/ 20 POINTS

Mathematics

2 answers:

ryzh [129]3 years ago

4 0

25.1 is the answer hope this helps

Dmitry [639]3 years ago

3 0

Answer:

25.1!

Step-by-step explanation:

all you have to do is C=2πr=2·π·4≈25.13274

To calculate the circumference of a circle, multiply the diameter of the circle with π (pi). The circumference can also be calculated by multiplying 2×radius with pi (π=3.14).

Hope that helped! :)

You might be interested in

In the survey 136 out of 160 depends on modular learning what percent of the reponents prefer modular learning?

xxTIMURxx [149]

C. 85%

Set up the proportions
136/160 = ?/100
Then cross multiply.

100 x 136 = 13600
13600/160 = 85

Also you could use process of elimination. 296% wouldn’t work because that’s saying 136 is almost 3 times as many as 160. The other answers wouldn’t work because it’s clear that 136 is more than half of 160.

3 0

3 years ago

Are the ratios 30:12 and 40:16 equal if reduced?

serg [7]

Yes, borh ratios when reduced are 5:2. 30:12 is 5:2 because both are divisible by 6. 30/6=5 and 12/6=2. 40:16 is 5:2 because both are divisible by 8, 40/8=5 and 16/8=2

5 0

3 years ago

Read 2 more answers

Is the following relation a function? Two circles are shown, one labeled x and the other labeled y. The x circle contains the nu

Allushta [10]

Answer:

i believe that it is a function.

Step-by-step explanation:

you do not have any of the exact same numbers with arrows ot one another.

5 0

3 years ago

For a party, Samantha bought eight half gallon bottles of soda. About how many cups of soda did Samantha buy?

harkovskaia [24]

Answer:

the anser is 64 cups

Step-by-step explanation:

half gallon is 8 cups and she bought 8 of them so multiply 8 and 8 or 8^2 and you get 64

pls mark brainliest

6 0

3 years ago

Read 2 more answers

I’ll give brainliest to the right answer plz help

BigorU [14]

9514 1404 393

Answer:

water

Step-by-step explanation:

Comparison of numbers can be done a couple of different ways. One way is to subtract one from the other. If the difference is positive, the minuend (first number) is the larger of the two.

Another way is to divide one number by the other. If the ratio is more than 1, then the numerator is the larger number.

For numbers in scientific notation, the division is perhaps the easiest. Here, that gives you ...

$\displaystyle\frac{\text{water mass}}{\text{oxygen mass}}=\frac{2.99\times10^{-26}\text{ kg}}{2.66\times10^{-26}\text{ kg}}=\frac{2.99}{2.66}\approx 1.12$

This value is greater than 1, so the mass of a water molecule is greater.

You will note that the multipliers (10^-26 kg) cancelled because they were equal. If they are unequal, the usual rules of exponents apply.

5 0

3 years ago