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MaRussiya [10]
2 years ago
12

Evaluate 8x^2 + 2x + 5, when x =7

Mathematics
1 answer:
bixtya [17]2 years ago
3 0

Answer:

432

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

8x² + 5x + 5

x = 7

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                                                                                                8(7)² + 5(7) + 5
  2. Evaluate exponents:                                                                                         8(49) + 5(7) + 5
  3. Multiply:                                                                                                             392 + 35 + 5
  4. Add:                                                                                                                 427 + 5
  5. Add:                                                                                                                 432
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3 0
3 years ago
Add 212+(−13) . Write your answer as a mixed number in simplest form.
nordsb [41]

The value of the given expression after addition is 199 and this can not written as a mixed number in the simplest form.

According to the question,

We have the following expression:

212+(-13)

Now, we know that the multiplication of one negative and one positive integers is always positive.

So, we have the following expression:

212-13

199

Now, this number is whole number and it can not be written as a mixed number. It could only have been written as a mixed number when the result would have been in a fraction.

Hence, the value of the given expression after addition is 199 and this can not written as a mixed number in the simplest form.

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brainly.com/question/19867930

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7 0
8 months ago
If I had 6 dollar bill to spent and I buy a chip for 2 dollars and an icecream sandwich box for 3 dollars would I have enough mo
NikAS [45]

Answer:

yes

Step-by-step explanation:

6 -2 = 4

4 - 3 = 1

1 - .80 = .20

7 0
2 years ago
Read 2 more answers
(04.02 MC)<br> Solve the system of equations.<br> 5x + y = 9<br> 3x + 2y = 4
goblinko [34]

Answer:

(2,-1)

Step-by-step explanation:

Multiply first equation by 2:

10x + 2y = 18

Subtract the second equation from this so that the 2y terms cancel:

10x - 3x = 18 - 4

7x = 14

x = 2

Plug into first equation to find y:

5(2) + y = 9

10 + y = 9

y = -1

The answer is (2,-1)

7 0
3 years ago
Read 2 more answers
Solve -9(t - 2) = 4(1-15).
snow_lady [41]

Answer:

t = 74 / 9

Step-by-step explanation:

-9(t - 2) = 4(1 - 15)

-9t + 18 = 4 - 60

-9t + 18 = -56

 -18      -18

-9t = -74

/-9     /-9

t = 74 / 9

t = 8.22

5 0
3 years ago
Read 2 more answers
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