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algol13
3 years ago
14

Write an expression to represent the sum of three times the square of a number and -7.

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
4 0

Answer:

3x^2-7

-7 is the constant

3 is the coefficient

x is the variable

Step-by-step explanation:

(3x^2)+(-7)

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Dividing polynomials. Aka the worst math subject ever<br><br> (X^3+729) / (x+8)
Deffense [45]

Answer:

x^2 - 8x + 64 remainder 217 or you could write it as

(x^2 - 8x + 64)+ 217/(x + 8)

Step-by-step explanation:

You first need to write the polynomial in descending order of degree with zero coefficients for x^2 and x terms, so here we have:

x^3 + 729  =   x^3 + 0x^2 + 0x + 729

So dividing by x+8:-

          x^2 - 8x + 64    <----------the quotient.

x + 8 ) x^3 + 0x^2 + 0x + 729

          x^3 + 8x^2

                 - 8x^2 + 0x

                 -8x^2 - 64x

                              64x + 729

                               64x + 512

                                          217 = Remainder.

6 0
3 years ago
An aquarium 4 ft long, 1 ft wide, and 2 ft deep is full of water. (give your answers correct to the nearest whole number.)
Radda [10]
V = l * w * h
V = 4 ft * 1 ft * 2ft
V = 8ft
If you’re looking for volume.
8 0
3 years ago
What does the left side of the equal<br> sign simplify to?
polet [3.4K]

Answer:

Step-by-step explanation:

An expression is a mathematical statement that does not contain an equal sign. It cannot be solved for unless the value of the variable is given. An equation is a mathematical statement or sentence comprised of two equalities or expressions joined with an equal sign.

6 0
3 years ago
Read 2 more answers
Yoooooooooooooooooooooooooo can you please help me!?
klemol [59]
She has totally 10+5+3=18 marbles, so the probability is 10/18=5/9. The complement is (9-5)/9=4/9.

Hope this helped!
4 0
3 years ago
Find the Perimeter of this shape. Can someone explain to me how to find the perimeter.
Agata [3.3K]
The little lines in each side show that the sides are the same length but you also need to find the length of the smaller side which isn’t the same. For this imagine that the shape is split into a square and a triangle and you need to find the long side of the triangle using Pythagoras
a^2 + b^2 = c^2
20^2 + 20^2 = 800
Square root of 800 = 28.3
Then do 28.3-20=8.3
So I think the answer is 20+20+20+20+20+8.3=108.3 cm
3 0
3 years ago
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