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Bad White [126]
2 years ago
13

To repair a roof that is 4 meters high Mr. Jeff leans a 5-meter ladder against the side of the building. To reach the roof how f

ar away from the building should he place the base of the ladder?
Mathematics
1 answer:
ANTONII [103]2 years ago
4 0

hi have a good day.

I think correct answer is-3

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5 0
3 years ago
Find the value of x in the triangle shown below 5 3
Alika [10]

Answer: 4

Step-by-step explanation: b =√c² - a ²

=√ 5² - 3 ²

=√16

=4

8 0
3 years ago
Kaitlyn works mowing laws and babysitting. She earns $7.90 an hour for mowing and $6.80 an hour for babysitting. How much will s
Alona [7]
7.90×7=55.30. 6.80×1=6.80. 55.30 + 6.80=62.10 Total
4 0
3 years ago
Which expression represents "5 times the sum of 4 and y?"
laila [671]
5(4+y) is the correct answer, you would be adding 4 and y then multiplying the sum by 5
7 0
3 years ago
X^4 − 3x^2 − 90 x= -3
Ahat [919]

Answer:

-36

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>

x⁴ - 3x² - 90

x = -3

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                                                                                                  (-3)⁴ - 3(-3)² - 90
  2. Exponents:                                                                                                        81 - 3(9) - 90
  3. Multiply:                                                                                                             81 - 27 - 90
  4. Subtract:                                                                                                            54 - 90
  5. Subtract:                                                                                                            -36
8 0
3 years ago
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