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sweet-ann [11.9K]
3 years ago
13

15 point !!!!!!!!!!!!!! please me with this problem.

Mathematics
2 answers:
Reika [66]3 years ago
3 0
3- all you have to do is 4.7 + 4.7
4 same thing just add that number to itself
For #5 take 25.6 and divide it by 2 and that’s your radius.


Explanation- the radius is half of the diameter
ivanzaharov [21]3 years ago
3 0

Answer:

3. 29.53; 4. 70. 99999397.....; 160.85?

Step-by-step explanation:

I just used the formula 2 x \pi x r=C

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The graph of a function is shown on the grid.
nataly862011 [7]

Answer:

y-intercept = (-2,0)

Step-by-step explanation:

the "C" is the answer

8 0
3 years ago
A triangular pyramid has a base with an area of 21.8 square meters, and lateral faces with bases of 7.1 meters and heights of 9
Ymorist [56]

Answer:

Step-by-step explanation:

A triangular pyramid has a base with an area of 21.8 square meters, and lateral faces with bases of 7.1 meters and heights of 9 meters. Enter an expression that can be used to find the surface area of the triangular pyramid.

The expression is written as:

Surface Area = Area of the base + 1/2( Perimeter × Slant height)

8 0
3 years ago
Five Tickets To A Basketball Game Cost $60. How Much Do 2 Tickets Cost?
horsena [70]

60/5 is 12. So they are $12 each.

So what is $12*2=$24

8 0
3 years ago
Read 2 more answers
Amy is doing a science experiment on how a certain bacterium reacts to an antibiotic. She has 3 dishes of identical bacterium sa
vagabundo [1.1K]
The sample size is 36 because 3x12=36
So the correct answer is C
Good luck with future problems m8
3 0
3 years ago
Officials begin to release water from a full man-made lake at a rate that would empty the lake in 10 weeks, but a river that can
Romashka [77]

Answer:

It takes 20 weeks to empty the lake

Step-by-step explanation:

Some rate, let's call it R_{empty} empties the lake in 10 weeks and a river (with rate R_{river} can fill the lake in 20 weeks. The idea behind the solution of this type of problem is always set the rate to the same units. Let's see this:

R_{empty}=\frac{1\ lake}{10\ weeks} which implies that this rate empties 0.1 of the lake per week, thus, R_{empty}=0.1/week.

Using the same idea, we can obtain that the filling rate of the river is:

R_{river}=\frac{1\ lake}{20\ weeks} = 0.05 /week

Since both rates are acting at the same time, the total rate of flowing water (either in or out the lake) would be given by:

R_{total}=R_{empty}+R_{river}\\R_{total}= -0.1 + 0.05=-0.05/week, which means that the lake is being empty at a rate of -0.05 week and using the rule of three:

\frac{0.05}{1} = \frac{1}{total\ of\ weeks}  \\total\ of\ weeks = \frac{1}{0.05}=\frac{1}{\frac{1}{20} }\\  total\ of\ weeks = 20

Thus, It takes 20 weeks to empty the lake.

5 0
3 years ago
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