2 years ago

PLEASE HELP!!!

Mathematics

2 answers:

Svetach [21]2 years ago

4 0

Luckily the true statement is there, otherwise you'd have to post more. When x = -5,

x^2 + 10 = (-5)^2 + 10 = 25 + 10 = 35

x + x + x = 3x = 3* - 5 = - 15

x^2 + 10 > x + x + x That's the first choice

Bingel [31]2 years ago

4 0

Answer:

x2+10>x+x+x

Step-by-step explanation:

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timurjin [86]

Answer:

Step-by-step explanation:

-(-) = +

2-(-8)

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How do u find the point in a graph if they are not given to u when u solving changing y over changing x

stiks02 [169]

U would replace x with 0 in the equation and solve and then do the same but with y and those are ur x and y values of ur point
Ex: 2x+5y=15
2(0) +5y=15
5y=15
Y=3
2x+5(0)=15
2x=15
X=7.5
So ur point would be (7.5,3)

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2 years ago

Danny is installing a fence around his rectangular yard. His yard is 20 feet long by 45 feet wide. If the fencing he picked out

artcher [175]

Find the perimeter of the yard ( the distance around the yard).

A rectangle has two sides of each dimension.

The perimeter is 20 + 20 + 45 + 45 = 130 feet.

Now multiply the total feet by the cost per foot:

130 feet x 25 per foot = $3,250 total.

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2 years ago

The height of a cone is equal to the diameter of the base. What expression represents the volume of the cone, in cubic units?

Maurinko [17]

By definition, the volume of a cone is given by:
$V = (1/3) * (\pi) * (r ^ 2) * (h)
$
Where,
r: radius of the circular base
h: height of the cone
Let's define a variable:
x: diameter of the base
We have then that the radio is:
$r = x / 2
$
The height is:
$h = x
$
Substituting values:
$V = (1/3) * (\pi) * ((x / 2) ^ 2) * (x)
$
Rewriting:
$V = (1/3) * (\pi) * (x ^ 2/4) * (x)

V = (1/12) * (\pi) * (x ^ 3)$
Answer:
An expression that represents the volume of the cone, in cubic units is:
$V = (1/12) * (\pi) * (x ^ 3)$

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2 years ago

Is 4/9 half of 8/18 ?

elixir [45]

Divide by 2 and find out.

4/9 / 2

Multiply by its reciprocal:

4/9 * 1/2

Multiply the numerators and denominators together:

4/18

4/18 does not equal 8/18, so 4/9 isn't half of 8/18.

5 0

2 years ago

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