All categories

2 years ago

Please help mememememememememmeemem

Mathematics

1 answer:

Feliz [49]2 years ago

5 0

Answer: D

The answer is ( 7, )

Step-by-step explanation:

Set the equations equal to each other. 3x - 28 = -3x + 14

Bring values over. 3x (+3x) - 28 = -3x + 14 (+28)

Add values together. 6x = 42

Divide by 6. x = 7

You might be interested in

The radius of a sphere is 6 units

lesantik [10]

Answer:

288 pi or 904.22

Step-by-step explanation:

(4/3) × pi × r³

(4/3) × pi × 6³

288pi or

288 × 3.14 = 904.32 units³

7 0

3 years ago

An oblique cylinder has a radius of 10 meters and a volume of 2,500pi cubic meters. Use Cavalieri’s Principle to solve for the h

worty [1.4K]

The answer you are looking for is 25.
2500 / 10² = 25
Since the formula for finding the volume is
V = Pi r² h

4 0

3 years ago

Read 2 more answers

A sample of 49 observations is taken from a normal population with a standard deviation of 10. the sample mean is 55. determine

Anna35 [415]

The answer I think is D.

3 0

3 years ago

An item on sale costs

9966 [12]

The sale price would be 18 dollars. Hope this helps you!

3 0

2 years ago

Read 2 more answers

What are the solutions to the quadratic equation below x^2+20x+100=7

aleksandrvk [35]

First you must have the quadratic equal to zero. In order to do this you must subtract 7 to both sides

x^2 + 20x + (100 - 7) = 7 - 7

x^2 + 20x + 93 = 0

Now you must find two numbers who's sum equals 20 and their multiplication equal 93

Are there any? NO!

This means that you have to use the formula:

$\frac{-b±\sqrt{b^{2} - 4ac} }{2a}$

In this case:

a = 1

b = 20

c = 93

$\frac{-(20) plus/minus\sqrt{20^{2} - 4(1)(93)} }{2*1}$

$\frac{-20 plus/minus\sqrt{400 - 372} }{2}$

$\frac{-20 plus/minus\sqrt{28} }{2}$

^^^We must simplify √28

√28 = 2√7

so...

$\frac{-20 plus/minus 2\sqrt{7} }{2}$

simplify further:

$-10 plus/minus\sqrt{7$

-10 + √7

-10 - √7

***plus/minus = ±

Hope this helped!

~Just a girl in love with Shawn Mendes

7 0

2 years ago