3 years ago

Help me out pleaseeeeeee

Mathematics

1 answer:

Lorico [155]3 years ago

7 0

The slope is -4/5 so it’s B

You might be interested in

Which expression is equivalent to (8a-3b+7)-(2a+b-4)?

pogonyaev

8a-3b+7-2a-b+4=6a-4b+11

7 0

3 years ago

How many solutions are there to the equation below 14x+2=12x

Veronika [31]

The answer is x-1 hope that helps not sure if it does

8 0

3 years ago

Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h = ?16t + 160t + 12

insens350 [35]

Answer:

The time taken for the flare to hit the ground is approximately 10.7 seconds.

Step-by-step explanation:

Given : Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation $h =- 16t^2+ 160t + 120$ models the h height at t seconds of the flare.

To find : How long will it take for the flare to hit the ground?

Solution :

The equation $h =- 16t^2+ 160t + 120$ models the h height at t seconds of the flare.

The flare to hit the ground when h=0.

Substitute in the equation,

$-16t^2+ 160t + 120=0$

Applying quadratic formula, $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

Where, a=-16, b=160 and c=120

$x=\frac{-160\pm\sqrt{160^2-4(-16)(120)}}{2(-16)}$

$x=\frac{-160\pm\sqrt{33280}}{-32}$

$x=\frac{-160\pm 182.42}{-32}$

$x=\frac{-160+182.42}{-32},\frac{-160-182.42}{-32}$

$x=−0.70,10.70$

Reject the negative value.

Therefore, the time taken for the flare to hit the ground is approximately 10.7 seconds.

4 0

3 years ago

keisha spent 45 minutes at soccer practice on Monday and n minutes on Tuesday. Write an experession that repersents the number o

levacccp [35]

Answer:

45+n

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What fraction is greater than 7/12

lapo4ka [179]

5/9 is grater than 7/12. same with 9/12, 6/7, 6/9

3 0

3 years ago