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uranmaximum [27]
3 years ago
5

What is the value of 7x squared + 2x when x = 3

Mathematics
1 answer:
jolli1 [7]3 years ago
7 0

So we know this expression:

7x^2 + 2x.

And we know x = 3.

(7*3)^2 + (2*3)

21^2 + 6.

441 + 6

447

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A piece of rope is 55 feet 6 inches long and a piece 6 feet 9 inches is cut from it.
DIA [1.3K]

ANSWER= the remaining piece of rope is 48 feet 9 inch long.

8 0
3 years ago
The sum of the digits of a three digit number is 19. The second digit is one more than the first digit. The third
Oxana [17]

Answer:

  • D. 568

Step-by-step explanation:

Let the number is in the form of xyz

<h3>We have</h3>

Sum of the digits is 19

  • x + y + z = 19

The second digit is one more than the first digit

  • y = x + 1

The third digit is two more than the second digit

  • z = y + 2 = x + 1 + 2 = x + 3

<u>Substitute the values of y and z</u> into the first equation and solve for x

  • x + x + 1 + x + 3 = 19
  • 3x + 4 = 19
  • 3x = 15
  • x = 5

<u>Find the value of y and z</u>

  • y = 5 + 1 = 6
  • z = 5 + 3 = 8

The number is 568

5 0
2 years ago
Determine the slope of each line (-6,5), (-4,-3)
Tamiku [17]
The slope for those points, as ONE (1) line is: y=-9/2<span>x.</span>
3 0
3 years ago
HELP ASAP!!
viktelen [127]

Answer:

The answer is terminating!

Step-by-step explanation:

repeating never ends

4 0
2 years ago
Read 2 more answers
Ms Sherman is preparing 5 and 5/8 cups of rice for his family reunion. She plans to use 1/4 of a cup for each serving. How many
Temka [501]

5 5/8  as an improper fraction

(8*5 +5) /8 = 45/8

45/8 divided by 1/4 =

copy dot flip

45/8 * 4/1 = 45/2

22 1/2

She has 22 1/2 servings

4 0
3 years ago
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