1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dmitriy555 [2]
3 years ago
13

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
G(x)= 3x - 1<br> Find g(2)
vova2212 [387]

Answer:

g(2) = 5

Step-by-step explanation:

To evaluate g(2) substitute x = 2 into g(x), that is

g(2) = 3(2) - 1 = 6 - 1 = 5

6 0
3 years ago
7. Which equation below represents a vertical line? y = x – 0 y = x + 0 y = 4 x = 4
prisoha [69]

x=4 would be a vertical line

6 0
3 years ago
Find the distance between the two points rounding to the nearest tenth (if necessary).
Genrish500 [490]

Answer:

13 units

Step-by-step explanation:

(-1,5) and (4, -7)

To find the distance of two points, we use the distance formula:

d = \sqrt{(x_{2}-x_1)^2 + (y_2-y_1)^2 }

Let's plug in what we know.

d = \sqrt{(4 - (-1))^2 + (-7 - 5)^2 }

Evaluate the double negative.

d = \sqrt{(4 +1))^2 + (-7 - 5)^2 }

Evaluate the parentheses.

d = \sqrt{(5)^2 + (-12)^2 }

Evaluate the exponents.

d = \sqrt{(25) + (144) }

Add.

d = \sqrt{(169) }

Evaluate the square root.

d = 13

13 units

Hope this helps!

4 0
3 years ago
Read 2 more answers
Solve for x. 5(3x + 9) = - 135
tekilochka [14]

Answer:

x=-12

D

tha last one

7 0
4 years ago
Read 2 more answers
Use a 95​% prediction interval to predict the useful life of a brand A cutting tool when the cutting speed is 45 meters per minu
qwelly [4]

Answer:

<em>The answer resides in the explanation.</em>

<em>Pls rate as brainliest </em>

Step-by-step explanation:

The predicted useful life of a brand A cutting tool when the speed is 45 meters per minute is 1.2 to 5.5 hours.

The predicted useful life of a brand B cutting tool when the speed is 45 meters per minute is 3.4 to 5.4 hours.

The prediction interval for brand A is larger than the prediction interval for brand B because the estimated standard error of  y^ is different for the two intervals.

The prediction intervals are both larger than the corresponding confidence intervals.

The standard error for the estimated mean value of y is smaller than the standard error for the predicted value of y.

The predicted useful life of a brand A cutting tool that is operated at 100  meters per minute is -0.59 hours

The actual predicted useful life of a brand A cutting tool when the speed is 100 meters per minute is 0.0 to 2.3 hours.

6 0
3 years ago
Other questions:
  • Determine the interval on which f(x) = ln(x) is integrable.
    7·2 answers
  • a croquet ball weighs 460 grams. together a golf ball and a croquet ball weigh the same as 11 golf balls.how much does 1 golf ba
    9·2 answers
  • One exterior angle of a regular pentagon has a measure of (2x) what is the value of x
    6·2 answers
  • In the number 956,783,529 how does the value of the digit 5 in the ten millions place compare to the 5 in the hundreds place
    12·1 answer
  • If a rocket that is launched into space is traveling at 300 feet per second, then how fast is the rocket traveling in yards per
    13·1 answer
  • Four more than one third x
    9·1 answer
  • Lee sells electronics He earns 5% commission on each sale he makes. If he
    8·1 answer
  • HELP ME!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • What will the remainder over the divisor?
    9·1 answer
  • A penny, a nickel, a dime, and a quarter are tossed. What is the probability of obtaining at least three tails on the losses
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!