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san4es73 [151]
2 years ago
13

Can someone help me with this Please​

Mathematics
1 answer:
horrorfan [7]2 years ago
8 0

Answer:

314 cm²

Step-by-step explanation:

To find the area of a circle, use the formula A = πr² by substituting r = 10.

A = πr² = π10² = 314 cm²

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I'm stuck on b.<br>please help me!!!!​
Sloan [31]

The area under the speed curve tells you how much distance the vehicle covers.

The distance for first 30 s corresponds to the area of a rectangle with height <em>k</em> m/s and length 30 s, or

(<em>k</em> m/s) (30 s) = 30<em>k</em> m

The distance for the last 20 s corresponds to the area of triangle with height <em>k</em> m/s and length 20 s, or

1/2 (<em>k</em> m/s) (20 s) = 10<em>k</em> m

If the total distance traveled was 1.7 km = 1700 m, then

30<em>k</em> + 10<em>k</em> = 1700

40<em>k</em> = 1700

<em>k</em> = 42.5

5 0
2 years ago
Gọi S là tập các giá trị nguyên của tham số m trong khoảng (–20;20) để bất phương
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Answer:

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Step-by-step explanation:

5 0
2 years ago
Factorise 15x-5 <br> factorise x^2-5x+6
kotegsom [21]
5(3x-1) (x-3)(x-2) I don't know if you want working out or an explanation? Or if it's too late, sorry.
5 0
2 years ago
Camille bought 3 pounds of nuts for 10.35. What is the unit price per pound?
dusya [7]
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8 0
2 years ago
Read 2 more answers
Data from the Centers for Medicare and Medicaid Services indicates that the annual per capita out-of-pocket expenses for health
Talja [164]

Answer:

During the year 2021.

Step-by-step explanation:

As we have a function that defines the annual per capita out-of-pocket expenses for health care, we can work with it.

Knowing that, <u>we clear x</u> (<em>this is the number of years past the year 2000, so it will contain our desired information</em>).

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Now, as we want to know when are the per capita out-of-pocket expenses for health care predicted to be $1400, and <em>this total is our variable y</em>, then

x=\frac{1400-543}{39.6}\approx 21.6

Finally, we know that <u>x is the number of years past the year 2000</u>, so the answer is that during the year 2021, <em>the per capita out-of-pocket expenses for health care are predicted to be $1400</em>.

3 0
3 years ago
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