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4 years ago

How do you get the answer

Mathematics

1 answer:

I am Lyosha [343]4 years ago

5 0

Plug in -2 for a, 3 for b, and -5 for c. Then it'd be | (-3)^2 - 2(-2)(-5) +5 (3) |. Then, multiply everything to get | 9 -20 +15 |. Then, add/subtract to get | 4 |. Finally, take the absolute value and get 4.

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geniusboy [140]

What does x equal? Unless it does not have the value..

8 0

3 years ago

A can of beans has surface area 388 cm? Its height is 13 cm. What is the radius of the circular top?

djyliett [7]

The radius of the circular top is 4. 75

<h3>How to determine the value</h3>

The formula for surface area of a rectangle is given as;

Surface area = 2πrh

Given that;

surface area = 388cm²
height is 13cm
radius is unknown

Let's substitute the values

388 = 2 × 3. 142 × 13r

388 = 81. 64r

Make 'r' the subject

r = 388/ 81. 64

r = 4. 75

Thus, the radius of the circular top is 4. 75

Learn more about a rectangle here:

brainly.com/question/25292087

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6 0

2 years ago

Please help me ASAP, thank you ^-^. The radius of the cone is 7 in and y = 25 in. What is the volume of the cone in terms of π?

MrRa [10]

<h2>Answer:</h2>

The volume of the cone in terms of π is:

A. 392π in³

<h2>Step-by-step explanation:</h2>

The radius of the cone i.e. r is: 7 in.

and the slant height of the cone i.e. l=y=25 in.

and let h=x be the height of the cone.

Now, using the Pythagorean Theorem we have:

$l^2=r^2+h^2\\\\i.e.\\\\h^2=l^2-r^2\\\\i.e.\\\\h^2=(25)^2-7^2\\\\i.e.\\\\h^2=625-49\\\\i.e.\\\\h^2=576\\\\i.e.\\\\h=\sqrt{576}\\\\i.e.\\\\h=24$

Hence, we get:

$h=x=25\ in.$

Now, the volume of the cone is given by:

$Volume=\dfrac{1}{3}\pi r^2h\\\\i.e.\\\\Volume=\dfrac{1}{3}\times\pi\times (7)^2\times 24\\\\i.e.\\\\Volume=392\pi\ in^3$

Hence, the answer is: Option: A

6 0

3 years ago

Read 2 more answers

Which expression is equivalent to g−m ÷ gn? g−m + n<br> g−m ⋅ n <br> g−m − n<br> g−m ÷ n

Sauron [17]

<h2>Answer:</h2>

The expression that is equivalent to the given expression is:

$g^{-m-n}$

<h2>Step-by-step explanation:</h2>

Two expression are said to be equivalent if by some simplification i.e. by some multiplication or division it could be represented in the same manner.

Here we are given a expression as:

g^{-m} ÷ g^n i.e.

$\dfrac{g^{-m}}{g^n}$