All categories

2 years ago

Is 2(5m-4)-3(m-5)^2 equivalent to -3m^2+40m-83? Show your work.

Mathematics

1 answer:

ivann1987 [24]2 years ago

4 0

$\\ \sf\longmapsto 2(5m-4)-3(m-5)^2$

$\\ \sf\longmapsto 10m-8-3(m^2-10m+5^2)$

$\\ \sf\longmapsto 10m-8-3(m^2-10m+25)$

$\\ \sf\longmapsto 10m-8-3m^2+30m-75$

$\\ \sf\longmapsto -3m^2+30m+10m-75-8$

$\\ \sf\longmapsto -3m^2+40m-83$

You might be interested in

What is 0.4% of 750?

marusya05 [52]

3 is 0.4% of 750. Honestly when you type the numbers into google it tells you sooo

6 0

3 years ago

Read 2 more answers

Select each interval where the graph is increasing.

olya-2409 [2.1K]

- 3 and 2 are the answers because at each of those points the graph line is rising.

8 0

2 years ago

Read 2 more answers

I need help, I will put as brainiest 15 points. pls help

lidiya [134]

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer: 382.5

Explanation:

450 x .85 = 382.5

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

8 0

2 years ago

Is writing a 3 before a square root symbol the same as writing it after a square root symbol?

attashe74 [19]

This depends as to whether you are just multiplying the square root by 3, or are doing a cube root function. In a cube root, the 3 would be located just at the bent part of the square root symbol, usually in a smaller font. If one just wanted to multiply a square root by 3, it does not matter whether or not the 3 comes before or after the root.

A cube root is equal to a value to the power of (1/3).

I hope this helps

4 0

3 years ago

The answer to number 7

slava [35]

The length of the rectangle in #7 is 18 ft
I cannot see which region is shaded so I will solve for both:
1.
the radius of one circle is 3:
A= $\pi$ $r^{2}$
A=(3.14)(9)
A=(28.26)
The area of the three circles is 84.78 feet squared

Area of rectangle is 108 feet squared (16*8)

108-84.78=23.22

The area of the shape around the circles is 23.22 feet squared

2:
The area of 1 circle is 28.26
The area of 3 circles is 84.78 feet squared
The area of the circles in the rectangle is 84.78 feet squared.

5 0

3 years ago