All categories

3 years ago

Simplify the expression -4x2(3x − 7)

Mathematics

2 answers:

Anna007 [38]3 years ago

5 0

-4x2(3x-7)
multiply -4 and 2
-8(3x-7)
distribute the -8
-24x+56

Paul [167]3 years ago

5 0

Its -12x^3+28x^2 hope it helps

You might be interested in

-2/3 minus (-4/6)= <br>

lina2011 [118]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

$- \frac{2}{3} - ( - \frac{4}{6} ) = \\$

$- \frac{2}{3} + \frac{4}{6} = \\$

$- \frac{2}{3} + \frac{2 \times 2}{2 \times 3} = \\$

$- \frac{2}{3} + \frac{2}{3} = 0\\$

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

8 0

3 years ago

If the perimeter is 102, how long is the longest side?

aalyn [17]

25.5
102/4=25.5

Not really sure though

8 0

3 years ago

Can someone help me with this one

rewona [7]

4 over 5 or y=4/5x+0

5 0

3 years ago

A number cube is rolled two times in a row. What is the probability of rolling a three both times

Kay [80]

Answer:

There would be a 1/36 chance.

6 0

3 years ago

Answer for number 12

aalyn [17]

Answer:

12 a. 4605 feet 12 b. 1,459,063 square feet

Step-by-step explanation:

For the perimeter, we simply add the lengths of each of the 5 sides together (or multiply 5 times one side length).

P = 5(921)

P = 4605 feet

For the area, we will use composition...add the area of the triangle to the area of the trapezoid.

For the area of the triangle, the formula is

$A=\frac{1}{2}bh$ .

Filling in our values gives us

$A=\frac{1}{2}(1490)(541)$ and

A = 403,045 square feet.

Now for the trapezoid. The formula for a trapezoid is

$A=\frac{1}{2}(b_{1}+b_{2})(h)$

where the b's represent the bases and the h represents the height. Filling in our values gives us

$A=\frac{1}{2}(921+1490)(876)$

Work inside the parenthesis first:

$A=\frac{1}{2}(2411)(876)$ and

A = 1,056,018

Now we add those together to get that area of the Pentagon is 1,459,063 square feet

4 0

3 years ago