3 years ago

How to solve PLS HELP

Mathematics

1 answer:

topjm [15]3 years ago

3 0

Answer is x=-3
Explanation:
-2x+1=7
X=-3

You might be interested in

A ship travels due north for 100 miles from point C to point A. From point A the ship travels to point B at 60° east of north. F

Karo-lina-s [1.5K]

Answer:

AandB=80miles

Total=240miles

Step-by-step explanation:

Draw the figure first indicating the figures then find the distance each degrees then find the total

4 0

3 years ago

Ryan is opening up a bookstore, where he sells both new and old books. He

Gennadij [26K]

Step-by-step explanation:

x= new books

y= old books

(to help keep track)

12.50x + 5.50y or 12.50(16) + 5.50(25)

so 337.50 in revenue

5 0

4 years ago

Read 2 more answers

Please help its USA Test Prep and i need an answer please and thank you

sdas [7]

Answer:

C. 8

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Solve. x^2 8x 25 = 0

kykrilka [37]

This equation is unsolvable.
x^2+8x+16=0
(x+4)^2+9=0
(x+4)^2= -9
anything to the power of whatever has to be greater than -1, it means it can be 0 or more but never a negative number. If it is a negative number, then it is false.

6 0

3 years ago

The radius of a sphere decreases at a rate of 6 m/sec. find the rate at which the surface area decreases when the radius is 20 m

DanielleElmas [232]

The radius of the sphere decreases at the rate of 6 m/ sec

That is, $\frac{dr}{dt}=-6$

Surface Area of the sphere of radius r is given by $S=4\pi r^2$

Differentiating with respect to t,

$\frac{dS}{dt}=4\pi (2r)\frac{dr}{dt}=8\pi r\frac{dr}{dt}$

$\frac{dS}{dt}=8\pi (20)^2(-6)=-960\pi \: m^2/sec$

8 0

4 years ago