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Sav [38]
3 years ago
5

What is -7v(v+7)-2(1+4v)

Mathematics
1 answer:
son4ous [18]3 years ago
5 0

Answer:

-7v² - 57v - 2

Step-by-step explanation:

-7v² - 49v - 2 - 8v

-7v² - 57v - 2

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67.498 to the nearest whole number
insens350 [35]

Answer:

67

Step-by-step explanation:

To round 67.498 to the nearest whole number consider the tenths’ value of 67.498, which is 4 and less than 5. Therefore, we have to round down: the whole number ones place value of 67.498, 67, remains 67, and the decimal point and all digits (.498) are removed.

67.498 rounded to the nearest whole number = 67

8 0
3 years ago
Whats the height of the prism
zheka24 [161]

Answer:

oh, you may have forgotten to add the file, you can edit and add it, which i will edit my response and respond.

Step-by-step explanation:

8 0
3 years ago
Pls help
KATRIN_1 [288]

Answer:

169.04 in² (nearest hundredth)

Step-by-step explanation:

Surface area of a cone = \pir² + \pirl

(where r = radius of the base and l = slant height)

Given slant height l = 10 and surface area = 188.5

Surface area  = \pir² + \pirl

188.5 = \pir² + 10\pir

\pir² + 10\pir - 188.5 = 0

r = \frac{-10\pi +\sqrt{(10\pi )^2-(4\times\pi \times-188.5)} }{2\pi } = 4.219621117...

Volume of a cone = (1/3)\pir²h

(where r = radius of the base and h = height)

We need to find an expression for h in terms of l using Pythagoras' Theorem a² + b² = c², where a = radius, b = height and c = slant height

r² + h² = l²

h² = l² - r²

h = √(l² - r²)

Therefore, substituting found expression for h:

volume of a cone = (1/3)\pir²√(l² - r²)

Given slant height l = 10 and r = 4.219621117...

volume = 169.0431969... = 169.04 in² (nearest hundredth)

5 0
3 years ago
Read 2 more answers
Solve inequality -8x < 32
castortr0y [4]

Answer:

x > -4

Step-by-step explanation:

I just looked it up

But I know this is it

3 0
3 years ago
Read 2 more answers
Figure A is a scale image of Figure B. What is the value of x?
rewona [7]

Answer:

x=30

Step-by-step explanation:

to find the value of x you have to find K(constant number).

\frac{x}{45}=\frac{18}{27}\\\frac{x}{45}=\frac{2}{3}\\  3(x)=45*2\\3x=90\\x=\frac{90}{3}\\ x=30

8 0
3 years ago
Read 2 more answers
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