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Volgvan
3 years ago
10

What is the answer to this???5 (3x + 7).

Mathematics
2 answers:
saul85 [17]3 years ago
6 0

5(3x+7)=5*3x+5*7=15x+35

vodomira [7]3 years ago
5 0

Answer:

5(3x+7)

This question is asking you to expand brackets

First Multiply 3x by 5

15x

Then multiply 7 by 5

35

Combine the two answers

15x + 35

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If f(x)=3x-1 and g(x)=x+2, find (f+g)(x)
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How would you round the number 32 to the nearest 100
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Read 2 more answers
The curved surface area of a cylinder is 880cm2 and its volume is 770cm3.Find its diameter and height.
natima [27]

Answer:

The height of cylinder is: h = 80.07 cm

The diameter of cylinder is: d = 3.5 cm

Step-by-step explanation:

Curved surface area of cylinder = 880 cm^2

Volume of cylinder = 770 cm^3

We need to find its diameter and height.

The formula used are:

Curved\: surface\: area=2\pi rh\\Volume=\pi r^2h

If we divide volume by curved surface, we can find radius

\frac{Volume}{Curved\: surface\: area}=\frac{\pi r^2h}{2\pi rh}  \\\frac{770}{880}=\frac{r}{2}\\0.875=  \frac{r}{2}\\=> r= 0.875\times 2\\r=1.75

So, we get radius r = 1.75

Now, we can find height using curve surface area formula:

Curved\: surface\: area=2\pi rh\\880=2(3.14)(1.75)h\\h=\frac{880}{10.99}\\h=80.07 \:cm

So, the height of cylinder is: h=80.07 cm

Now finding diameter using formula: d=2r

Putting value of r in above formula:

d=2r\\d=2(1.75)\\d=3.5\:cm\\

So, the diameter of cylinder is: d = 3.5 cm

5 0
3 years ago
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