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Tamiku [17]
3 years ago
14

PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!! I CANNOT RETAKE THIS!!

Mathematics
1 answer:
ololo11 [35]3 years ago
5 0

Answer:

The zeros occur when x = -3 , -1  , 1 and 7

Step-by-step explanation:

I don't exactly know how to do this so I can show you how to do it using some sort of method of division. There are 2 huge steps to be taken. Start with 1

Using synthetic division you get

-1  || 1   -   4    -22    4     21

              -1       5    17     -21

     ===================

       1  -   5     -17    21      0

So far we have x = - 1 or (x + 1) is a factor.

It turns out by trial and error that x = - 3 is a factor. What you get after that synthetic division is x^2 - 8x + 7 which factors into (x - 7)(x - 1)

So what we get is

(x - 1)(x + 1)(x - 7 )(x +3)

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Please explain how to do it
nydimaria [60]

Answer:

3/2:2=3/4 is the answer

7 0
3 years ago
How do I factor x^2+4x+20
icang [17]
Its like x² + 4x +20 = 0,
x = [-4 + √[(4²) - (4*1*20)]]/(2*1) = [-4 + √(16-80)]/2 = [-4 + √(-64)]/2 = [-4 + 8√(-1)]/2 = -2 + 4i,
x = [-4 - √[(4²) - (4*1*20)]]/(2*1) = [-4 - √(16-80)]/2 = [-4 - √(-64)]/2 = [-4 - 8√(-1)]/2 = -2 - 4i,
here i = √(-1), its a complex number.
so solution is a complex number,
x = -2 - 4i & -2 + 4i.
8 0
3 years ago
15 points! please help. its math
LiRa [457]

1. 1/3

2. 1/8

3. 1/6

4. 1/10

5. 3/5

6. 1/5

7. 3/4

6 0
3 years ago
Read 2 more answers
Help plzz! Trig Question..
Darina [25.2K]

Answer:

8 meters

Step-by-step explanation:

First, we can draw this out. The angle of depression represents the angle above the line from the bird and the apple, as shown. A line can be drawn from the bird to the apple as well as from the apple's height to the bird's height. A third line can be drawn connecting the line that goes straight up from the apple to the bird, forming a right triangle. We know that this is a right triangle because the purely vertical line from the apple's height to the bird's height is perpendicular to the horizontal line from the bird to the line right above the apple.

Next, we know that we are given an angle and the side adjacent to it. We want to find the length of the side opposite to the angle because that will give us the height from the bird to the apple, and adding that to the height from the apple to the ground will give us the height of the tree. In sohcahtoa, one equation that symbolizes this is tan x = opposite/adjacent, so

tan(55°) = opposite/adjacent

= opposite/4.5

multiply both sides by 4.5 to isolate opposite

tan(55°) * 4.5 = opposite

≈ 6.43

Adding this to the height of 1.5 meters from the apple to the ground, we get the height of the tree to be approximately 7.93, rounding up to 8 meters

6 0
3 years ago
Can someone please explain this question to me?<br> The image is attached.
Dmitriy789 [7]

Answer:

13

Step-by-step explanation:

Given the expression;

2 1/3 : 4 1/3 = 7 : x

Wea re to look for x;

Convert to improper fractions;

7/3 : 13/3 = 7:x

7/3 * 3/13 = 7/x

7/13 = 7/x

Cross multiply

7x = 13 * 7

7x = 91

x = 91/7

x = 13

Hence the unknown value is 13

3 0
3 years ago
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