3 years ago

Arnold needs to simplify the expression below.

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

3 0

I believe answer choice C is the answer. You would solve whatever is inside of the parentheses first because of PEMDAS.

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A plane at 3,800 feet is descending at a rate of 120 feet per minute, and a plane at 520 feet is climbing at a rate of 40 feet p

Llana [10]

so the basic formula for this d = rt

where d is the distance , r is the speed and t is time

3800 – 120t = 520 + 40t ( this is the altitude of each plane are equal)

Solve for t

T = 20.5 min time it takes for the planes to be at the same altitude

3800 – 120(20.5) = 1340 ft

5 0

3 years ago

40 points. Factor the following polynomial.

madam [21]

Answer:

Step-by-step explanation:

49y² - x² ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b) , then

49y² - x²

= (7y)² - x²

= (7y - x )(7y + x) → A

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3 years ago

What is the distance between point A and B , to the nearest tenth ?

kondaur [170]

I can’t see where they are

6 0

3 years ago

Write the standard form of the line that passes through the given points. Include your work in your final answer. Type your answ

Nata [24]

Answer: $5x-3y=44$

Step-by-step explanation:

We know that , the equation of a line that passes through (a,b) and (c,d) is given by :_

$(y-b)=\dfrac{d-b}{c-a}(x-a)$

Standard form of equation of line = $Ax+By=C$

Given points = (7, -3) and (4, -8)

Then, the equation of a line that passes through the points . (7, -3) and (4, -8) is given by -

$(y-(-3))=\dfrac{-8-(-3)}{4-7}(x-7)$

$(y+3)=\dfrac{-8+3}{-3}(x-7)$ [∵ (-)(-)=(+)]

$(y+3)=\dfrac{-5}{-3}(x-7)$

$(y+3)=\dfrac{5}{3}(x-7)$

$3(y+3)=5(x-7)$

$3y+9=5x-35$

$9+35=5x-3y$

$44=5x-3y$

Or $5x-3y=44$

Hence, the required equation :- $5x-3y=44$

4 0

3 years ago

PLEASE HELP AS SOON AS POSSIBLE WILL GIVE BRAINLIEST

allsm [11]

The answer and work is in the SS below

3 0

3 years ago

Read 2 more answers