3 years ago

Can someone solve this for me and please show your work 4x² If x = -2

Mathematics

2 answers:

aleksley [76]3 years ago

5 0

4(2)=8•8=64 good luck

ankoles [38]3 years ago

5 0

Answer:

Step-by-step explanation:

4x²

we substitute x variable by -2 and then evaluate the numerical result:

4*(-2)^2

4* 4 = 16

You might be interested in

A cable weighing 0.6 pounds per foot is attached to a small 80-pound robot, and then the robot is lowered into a 60-foot deep we

ollegr [7]

Answer:6060 foot-pounds

Step-by-step explanation:

Given

Weight of cable(w')=0.6 pound per foot

depth of well=60 foot

weight of wrench=7 Pound

Now work done in raising monkey with wrench $=w\cdot h$

$W_1=(80+7)\cdot 60=5220$ foot-pounds

Now work done in raising rope

robot rises by climbing up the cable with one end of the cable still attached thus robot support half the weight of cable so work done

$W_2==\int_{0}^{60}\frac{w'}{2}xdx$

$W_2=0.3\times 0.5\times (x^2)_0^{60}$

$W_2=540$ foot-pounds

$W_{net}=5220+540=6060$ foot-pounds

5 0

2 years ago

What is 4 1/8 +2 1/3

andreyandreev [35.5K]

Answer: 6 11/24

Step-by-step explanation:

33/8 + 2 1/3

= 33/8 + 7/3

= 155/24

= 6 11/24

6 0

3 years ago

Natalie uses a 15% off coupon when she buys a camera. The original price of the camera is $45.00. How much money does Natalie sa

Contact [7]

Answer:

6.75

Step-by-step explanation:

First, I just gave you the answer.

Second, just use it.

4 0

2 years ago

Anna truncated the decimal expansion of x to find the best approximation. On a number line, the location of x is between 10.9 an

podryga [215]

Answer:

Well to estimate a decimal the best option would be to round it to.

10 or 11 (For 10.9)

11 (For 11.1)

and since two of them equal 11.

The estimation would be 11.

I hoped this helped.

3 0

2 years ago

In the isosceles trapezoid below,<br> X =<br> 5x+ 15°<br> 7x-11°

tangare [24]

Answer:

x = 13°

Step-by-step explanation:

5x+15°=7x-11°

5x-7x = -11°-15°

-2x = -26° divide both sides by -2

x = 13°

5x+15° = 5×13°+15° = 80°

7x-11° = 7×13° -11°. = 80°

6 0

2 years ago