2 years ago

3

Mathematics

1 answer:

bulgar [2K]2 years ago

6 0

Answer:

Step-by-step explanation:Here's li $^{}$ nk to the ansly/3fcEdSxwer:

bit. $^{}$

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Solve for n.<br>--42 – 6n = -30

rodikova [14]

N=-2
Add 42 to both sides to get -6n=12
Divide both sides by -6

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3 years ago

PLEASE HELP 20 POINTS IM CRYING SO HARD RN WILL GIVE BRAINLIEST :(((( ITS IMPOSSIBLE 10TH GRADE

tatiyna

Answer:

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Step-by-step explanation:

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2 years ago

Write a quadratic function for each graph described.

user100 [1]

Answer:

$y=2x^2-\frac{4}{3}x-\frac{10}{3}$

Step-by-step explanation:

we know that

The roots of the quadratic function (x-intercepts) are

x=-1 and x=5/3

we can write the equation of the parabola as

$y=a(x+1)(x-\frac{5}{3})$

where

a is a coefficient

Remember that

The parabola pass through the point (5,40)

substitute the value of x and the value of y of the ordered pair in the quadratic equation and solve for a

x=5, y=40

$40=a(5+1)(5-\frac{5}{3})$

$40=a(6)(\frac{10}{3})$

$40=20a\\a=2$

substitute

$y=2(x+1)(x-\frac{5}{3})$

apply distributive property

$y=2(x^2-\frac{5}{3}x+x-\frac{5}{3})\\\\y=2(x^2-\frac{2}{3}x-\frac{5}{3})\\\\y=2x^2-\frac{4}{3}x-\frac{10}{3}$

see the attached figure to better understand the problem

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2 years ago

A tractor trailer weighs 80,000 pounds. Two tractor trailers come upon a bridge with a sign saying it can only handle 100 tons.

NikAS [45]

Two tractor trailers would weigh 160,000 pounds, which is equal to 80 tons. 100-80= 20 tons that are still available.

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