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3 years ago

Please help answer -7(2y-3x+9)

Mathematics

2 answers:

blondinia [14]3 years ago

7 0

Answer:

21x - 14y - 63

Step-by-step explanation:

Here you go :D

ANEK [815]3 years ago

4 0

Answer:

21x -14y -63

Step-by-step explanation:

First step we have to distribute -7 inside the parenthesis.

(-7)(2y) - (-7)(3x) +(-7) (9)

RULE 1: The product of a positive integer and a negative integer is negative. RULE 2: The product of two positive integers is positive.

RULE 3: The product of two negative integers is positive.

-14y+ 21x - 63

21x -14y -63

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Mumz [18]

Answer:

Step-by-step explanation:

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3 years ago

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Find the volume of this cylinder. Please help

algol13

Answer:

$\boxed {\boxed {\sf 384 \ ft^3}}$

Step-by-step explanation:

The volume is the space an object occupies. The volume formula for a cylinder is provided and it is:

$V= \pi r^2 h$

Where:

r= radius
h= height

The radius is the distance from the center of the circle to the edge, and it is 4 feet. The height is 8 feet. We are told to use 3 for pi.

r= 4 ft
h= 8 ft
π= 3

Substitute the values into the formula.

$V= (3)(4 \ ft)^2 (8 \ ft)$

Solve the exponent.

(4 ft)²= 4 ft * 4 ft = 16 ft²

$V= (3)(16 \ ft^2)(8 \ ft)$

Multiply the three numbers together.

$V= 48 \ ft^2 (8 \ ft)$

$V= 384 \ ft^3$

The volume of the cylinder is approximately <u>384 cubic feet.</u>

8 0

3 years ago

Which function has zeros at x=-2 and x=5?

Licemer1 [7]

Answer:

$x^{2} - 3x - 10$

Step-by-step explanation:

To start, lets form our polynomial factors from our zeroes.

x = -2

x + 2 = 0

x = 5

x - 5 = 0

Now lets put these into factored form by moving them into parenthesis and multiplying them with each other!

(x+2)(x-5)

We can start moving them out! I am going to use FOIL, but you could also use distributive or any other method/property.

x · x = x²

x · -5 = -5x

x · 2 = 2x

2 · 5 = 10

Now lets put our terms into our polynomial function, based on the order of the powers.

$x^{2} - 3x - 10$

We are done! Hope this helps!

7 0

3 years ago

A top of a round cake has an area of about 201 square inches what is the circumference of the top of the cake rounded to the nea

lesya692 [45]

we are given

A top of a round cake has an area of about 201 square inches

Let's assume radius of circle is 'r'

$A=\pi r^2$

now, we can plug values and solve for r

$201=\pi r^2$

$r^2=\frac{201}{\pi}$

$r=8$

now, we can find circumference

$C=2\pi r$

$C=2\pi *8$

$C=50.2654 in$

$C=50in$ .................Answer

6 0

3 years ago

A(n)________ is broader in scope than a hypothesis, is supported by a large body of evidence, and generates many new hypotheses.

GenaCL600 [577]

Answer:

Theory

Step-by-step explanation:

According to my research on the field of science, I can say that based on the information provided within the question the term being mentioned is called a Theory. This is a plausible or scientifically acceptable general principle or body of principles offered to explain phenomena, such as Einsteins theory of relativity.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

4 0

3 years ago