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Klio2033 [76]
3 years ago
8

Show all work to factor x^4 − 10x^2 + 9 completely.

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
4 0
(x-1)(x+1)(x-3)(x+3)

x²-y² formula


Mark brainliest please
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The spinner is divided into a equal sections which two events have the same probability
myrzilka [38]

Answer:

its A

Step-by-step explanation:

7 0
3 years ago
The City Sights tour company had the same ratio of tourists to guide on both days this weekend.On Saturday,there were 120 touris
vivado [14]

Answer: There were 6 guides on Sunday.

Step-by-step explanation:

I suppose that this is a question about equivalent ratios:

It is said that the company had the same ratio of tourists to guides on Saturday and Sunday.

RATIO OF TOURISTS TO GUIDES:

SATURDAY: 120 : 18

SUNDAY: 40 : ?

Divide 120 by 40:

120/40 = 3

Divide 18 by 3:

18/3 = 6

Therefore:

SAT: 120 : 18

SUN: 40 : 6

Check it by multiplying both numbers in the ratio 40 : 6 by 3:

40 • 3 : 6 • 3

= 120 : 18

(You get the ratio from Saturday)

Hope this helps!

8 0
3 years ago
Question 1
vivado [14]

Answer:

For Lin's answer

Step-by-step explanation:

When you have a triangle, you can flip it along a side and join that side with the original triangle, so in this case the triangle has been flipped along the longest side and that longest side is now common in both triangles. Now since these are the same triangle the area remains the same.

Now the two triangles form a quadrilateral, which we can prove is a parallelogram by finding out that the opposite sides of the parallelogram are equal since the two triangles are the same(congruent), and they are also parallel as the alternate interior angles of quadrilateral are the same. So the quadrilaral is a paralllelogram, therefore the area of a parallelogram is bh which id 7 * 4 = 7*2=28 sq units.

Since we already established that the triangles in the parallelogram are the same, therefore their areas are also the same, and that the area of the parallelogram is 28 sq units, we can say that A(Q)+A(Q)=28 sq units, therefore 2A(Q)=28 sq units, therefore A(Q)=14 sq units, where A(Q), is the area of triangle Q.

7 0
3 years ago
Read 2 more answers
There are 2112 people in a concert.
nadya68 [22]

Answer:

75% of 352 children are boys

Step-by-step explanation:

If 5/6 of the people participaticipants to a concert are adults then 1 out of 6 prople are children so we may reach a number of 2112:6=352 children

if 25% of the children are girls then 75% are boys

88×3=264 boys

7 0
4 years ago
2x - 8(5 + 3x) = 4(x + 1)<br> Solve this equation step by step
Alik [6]

Answer:

x=−22/13

Step-by-step explanation:

Let's solve your equation step-by-step.

2x−8(5+3x)=4(x+1)

5 0
3 years ago
Read 2 more answers
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