3 years ago

Evaluate 3x (x + 2) – 3x? for x = 19

Mathematics

1 answer:

sineoko [7]3 years ago

6 0

Answer:

1140

Step-by-step explanation:

3x(x + 2) - 3x

x = 19

3 * 19( 19 + 2) - 3 * 19

3 * 19(21) - 3 * 19

3 * 19 = 57

57(21) - 3 * 19

57 * 21 = 1197

1197 - 57

1140

Hope this helped!

You might be interested in

What is the volume of a pyramid with a base of 22 and a height of 24

larisa86 [58]

Answer:3872

Step-by-step explanation: If base length and base width equal 22, and pyramid height is 24 then you multiply those and divide by three.

V= $\frac{22x22x24}{3}$

8 0

3 years ago

the formula for a rectangular prism is v equals I × w × hperiod what is the volume of a rectangular prism with a length of 5 ft,

just olya [345]

1. Sorry I just don’t know how to do this type of stuff

4 0

2 years ago

Find an equation for the line that passes through the points (1. - 4) and (-5.4).

DIA [1.3K]

Answer:

y=-4/3x-8/3

Step-by-step explanation:

Use the slope formula y2-y1/x2-x1

Finding the slope, 4-(-4)/-5-1 = 8/-6 = -4/3

y=-4/3x + b

Substituting,

-4=-4/3+b

-12/3+4/3=b

b=-8/3

y=-4/3x-8/3

5 0

2 years ago

What is the equation of the line that had a slope of 4 and a y-intercept of -7?

nikklg [1K]

The correct answer would be D.Y=4X-7

6 0

3 years ago

The sale price of an item is $160 after a 20% off discount. What was the original price of the item?

bulgar [2K]

Answer:

200

Step-by-step explanation:

160/80 is 2. 2 times 100 is 200

6 0

2 years ago