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ahrayia [7]
3 years ago
7

Solve this equation Algebraically

Mathematics
2 answers:
horrorfan [7]3 years ago
6 0
my PayPal is tiyastar pay $0.20 I’m trying to buy a $4.00 necklace for my mum
sergeinik [125]3 years ago
5 0

Answer:

x=−1 ,1,−2

Step-by-step explanation:

x3+2x2−x=2

x3+2x2−x−2=2−2

x3+2x2−x−2=0

(x+1)(x−1)(x+2)=0

x+1=0 or x−1=0 or x+2=0

x=−1 or x=1 or x=−2

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Cubic yards of concrete will be required for 14 parking lot light pole standards
riadik2000 [5.3K]

Using conversion of units and volume of a cylinder, it is found that 23.17 cubic yards of concrete are needed, option D.

The volume of a cylinder of radius r and height h is given by:

V = \pi r^2h

In this problem:

  • We want the volume in cubic yards, thus, the units of radius and height have to be in yards.
  • 32 inches in diameter, thus 16 inches of radius. Since each inch has 0.0278 yards, this is a radius of 0.44 yards, thus r = 0.44.
  • Height of 8 feet, and since each feet has 0.33 yards, this is a height of 2.67 yards, thus h = 2.67
  • 14 poles, thus the volume is multiplied by 14.

Then:

V = 14\pi(0.44)^2(2.67) = 23.17

23.17 cubic yards of concrete are needed, option D.

A similar problem is given at brainly.com/question/22789697

3 0
2 years ago
Choose the benchmark that 3-7/12<br> closest to<br> 3-1/2<br> 2.<br> 3
luda_lava [24]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
Write the equation if the line that passes through (4,5) and has a slope of m=3
andrew11 [14]

Answer:

y = 3x - 7

Step-by-step explanation:

The <em>point-slope formula</em> for a straight line is

y – y₁ = m(x – x₁)

x₁ = 4; y₁ = 5; m = 3     Substitute the values

y – 5 = 3(x - 4)             Remove parentheses

y – 5 = 3x - 12             Add 5 to each side

     y = 3x - 7

The graph is a straight line with a y-intercept at y = -7 and a slope = 12/4 = 3.

6 0
3 years ago
There are 36 carpenters in a crew.
dolphi86 [110]

Answer:

<em>75%</em>

Step-by-step explanation:

27 ÷ 36 = 0.75

0.75 → 75%

75% of the crew are men

Hope this helped! :)

7 0
3 years ago
Read 2 more answers
Can some one help me PLEASEEE
notka56 [123]
3 months, 96 plus 78x3 = 330 (78x3=234+96) 110X3=330 meaning it is 3 months
3 0
3 years ago
Read 2 more answers
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