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Lina20 [59]
3 years ago
9

X^3 - 2x^2 - 15x Factor completely ​

Mathematics
1 answer:
Schach [20]3 years ago
7 0

Answer: x(x−5)(x+3)

Step-by-step explanation:

:D

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The sum of four consecutive numbers is 230. What is the largest of these numbers
vodka [1.7K]

Answer:

n + n+1 + n+2 + n+3 = 230

4n = 224

n = 56 and largest number = 59


Step-by-step explanation:


7 0
3 years ago
A boat captain can see a lighthouse on the shore which is 103ft in front of him. If the lighthouse is 22ft tall, at what angle o
elena-14-01-66 [18.8K]

Answer:

  • 21°

Step-by-step explanation:

A boat captain, lighthouse and its base form a right triangle.

<u>We need to find the angle opposite to 22 ft side:</u>

  • tan x = 22/103
  • x = arctan (22/103)
  • x = 21°

<em>Note, option D should read 21° not 11°</em>

5 0
2 years ago
Use factor trees to find the GCF of 32, 24, and 40.
Lana71 [14]
GCF           32                    24                      40
                   ^                       ^                        ^
                2   16               2     12               2    20
                      ^                         ^                      ^
                   2    8                   2    6               2    10
                         ^                         ^                       ^
                       2   4                   2   3                 2    5
                            ^
                          2   2

                (2)                         (2 & 3)               (2  &  5)
8 0
3 years ago
Farmer Brown is tilling her field. Farmer Brown tills 2/3 of an acre in 2/7 of an hour. What is Farmer Brown's unit rate of till
Cerrena [4.2K]

Answer:

2 1/3 acres per hour

Step-by-step explanation:

If you divide both numbers by 2, you get 1/3 and 1/7. If 7 makes up an hour, then you multiply 1/3 by 7, which gets you 2.333.. which is equivalent to 2 1/3.

3 0
3 years ago
Calculate the slope of the line on the graph
Tamiku [17]

Answer:

3.5 (meters per second)

Step-by-step explanation:

To calculate the slope, we need two points. Let's see if we can select two points from the graph.

From the graph, we can pick out two possible points.

At the beginning, (0,2.5) is a valid candidate.

And at the end, with (5,20). Thus, let's use the slope formula to calculate the slope.

The slope formula is:

m=\frac{y_2-y_1}{x_2-x_1}

Let (0,2.5) be x₁ and y₁ and let (5,20) be x₂ and y₂. Thus:

m=\frac{20-2.5}{5-0}

Simplify:

m=\frac{17.5}{5}\\ m=3.5

Thus, the slope is 3.5 meters per second.

Further notes:

And the entire equation will be:

m=3.5s+2.5

3 0
3 years ago
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