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dedylja [7]
3 years ago
11

Hey Brainlies, THIS QUESTION IS 4 CAMRYN AND JOHAN!!!

Mathematics
2 answers:
Ket [755]3 years ago
7 0

Answer:

30 days

Step-by-step explanation

40+15=55

1650/55=30

kaheart [24]3 years ago
4 0

Answer:

It takes Danny 30 days.

Step-by-step explanation:

55 x 30 = 1650

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:( I Need help! Show work please! Aviva has a total of 52 coins, all of which are either dimes or nickels. The total value of th
Jet001 [13]

Answer:

42 Dimes, 10 Nickels.

Step-by-step explanation:

Dimes are worth $0.10, nickels are worth $0.05.

If D = number of dimes, and N = number of nickels, then the following equations are true:

0.10D + 0.05N = 4.70

D + N = 52

Next, let's multiply the first equation by 10 so that we can subtract the second one from it.

D + 0.50N = 47

(-) D + N = 52

Subtracting the second equation from the first one gives:

-0.5N = -5

-0.5N/-0.5 = -5/-0.5

N = 10

Finally, substitute N in the original second equation to find D.

D + 10 = 52

D + 10 - 10 = 52 - 10

D = 42

5 0
2 years ago
Find the value of x? please help​
Stella [2.4K]

Answer:

49

Step-by-step explanation:

With these types of problems, you have to subtract the outer and inner values and then divide by 2. So, (125-27)/2 = 49. Hope this helps!

4 0
3 years ago
Read 2 more answers
Given 100 grams of bacteria that decreases at the rate of 1/2 per year. What would be an appropriate range after 4 years
Brilliant_brown [7]

Answer: B 0

Step-by-step explanation:

8 0
2 years ago
Please help, I need to get this done!<br>I need to get number 16, 17, and 18 done please help!!!!​
Tresset [83]

Answer:

16) 62.8 m²

17) 19.4 m²

18) 103.5 m²

Step-by-step explanation:

The formula to find area of a circle is: \pi r^{2}. To find radius, find the half of the diameter.

To solve number 16, first find the area of the unshaded circle using the formula: \pi 4^{2}. This is also 3.14*16. Multiply to get 50.24 m². Now find the area of the larger circle using the formula: \pi 6^{2}. This is also 3.14*36. Multiply to get 113.04 m². Now subtract 113.04 - 50.24 to get the shaded area or 62.8 m².

To solve number 17, first find the area of the square using the formula: side x side. In this case multiply: 5.25 x 5.25 to get 27.5625. Round to the nearest tenth to get 27.6 m². Now find the area of the circle using the formula: \pi 2.625^{2}. This is also 3.14*2.625. Multiply to get 8.2425. Round to the nearest tenth to get 8.2. Subtract 27.6 - 8.2 to get 19.4 m².

To solve number 18, find the area of one unshaded circle using the formula: \pi 1.75^{2}. This is also 3.14*3.0625. Multiply to get 9.61625. Round to the nearest tenth to get 9.6 m². Add 9.6 + 9.6 to find the area of both unshaded circles. You get 19.2 m². Now find the area of the shaded circle using the formula: \pi 6.25^{2}. This is also 3.14*39.0625. Multiply to get 122.65625. Round to the nearest tenth: 122.7. Subtract 122.7 - 19.2 to get 103.5 m².

Hope it helps and is correct!

5 0
3 years ago
What is the volume of this cylinder?
tatiyna

Answer:

The volume of the cylinder is 792

Step-by-step explanation:

3.14*6^2*7= 791.68  then when you round it up to the nearest whole number it's 792

4 0
2 years ago
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