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TEA [102]
3 years ago
13

Factor completely x3 + 7x2 + 3x + 21.help meeeee

Mathematics
1 answer:
Vlada [557]3 years ago
4 0

Answer:

(x+7) (x^2+3)

Step-by-step explanation:

Add and subtract the second term to the expression and factor by grouping. Hope this helps!

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Plz help I need help plz
Nutka1998 [239]

Answer:

associative! property! of! addition!

Step-by-step explanation:

we change the order of the addends but the sum doesn't change

8 0
3 years ago
Read 2 more answers
How many degrees there in 3/5 right angle<br><br>A. 180<br>B. 90<br>C. 150<br>D. 54​
Natalija [7]

Answer:

D. 54​

Step-by-step explanation:

Right angle = 90°

3/5 of 90°

3/5 × 90°

270 ÷ 5 = 54°

8 0
3 years ago
Suppose a triangle has two sides of length 33 and 37 and that the angle between these two sides is 120 what is the length of the
Nutka1998 [239]

Answer:

  60.65

Step-by-step explanation:

The Law of Cosines can help you figure this out. Call the given sides "a" and "b" and the given angle "C". Then the third side, "c" will satisfy the relation ...

  c² = a² + b² -2ab·cos(C)

  = 33² +37² -2·33·37·cos(120°) = 3679

  c = √3679 ≈ 60.65476 ≈ 60.65

The length of the third side is about 60.65 units.

5 0
3 years ago
Can someone tell me these please? I need help BADLY a will give brainliest if correct 26 a b and c
hram777 [196]

a - b ≤ 25

b - yes

c - 26 ( draw the picture for your explanation)

5 0
3 years ago
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What is the equation of a line that contains the points (8, –3) and (–8, 3)?
DerKrebs [107]

Answer:

1. D y = 8

2. C y = −8

Step-by-step explanation:

1.Both points have y-coordinate 8, so the line is horizontal.

A horizontal line has equation y = k

where k is the y-coordinate of all of its points.

The y-coordinate of all points on this line is 8.

Answer: y = 8

2.A line with 0 slope is a horizontal line. All points on a horizontal line have the same y-coordinate.

A horizontal line has equation

y = k

where k is the y-coordinate of all of its points.

The y-coordinate of the given point is -8, so all points must have -8 as the y-coordinate.

Answer: y = -8

8 0
3 years ago
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