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Tanya [424]
3 years ago
9

Factor the following quadratic expression x^2 + 9x + 20

Mathematics
1 answer:
AysviL [449]3 years ago
6 0

Answer:

(x+5)(x+4)

Step-by-step explanation:

factors of 20: 1,20,2,10,4,5

Since 4 and 5 are the only factors of 20 that have a sum of 9 the answer is (x+5)(x+4)

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Help please!!!
Tanya [424]
Sin C = AB / AC
We have AC. We need to calculate AB

ABC is a right triangle. Therefore, AC² = AB²+BC²
82² = AB ² + 80² => AB² = 82² - 80²
AB = 18

Sin C = 18/82 = 9/41

Good luck
4 0
3 years ago
Read 2 more answers
Amy has completed 21 deliveries so far this week.she needs to make 60 deliveries for the week.what percentage of her deliveries
Nonamiya [84]

Answer:

65% to go or 35% already delivered

Step-by-step explanation:

Amy has completed 35% of her deliveries since 21/60 is .35

If the question is how much she has left, Amy needs to complete 65% more of her deliveries.

If the question is how much she has completed, she has delivered 35% of her deliveries.

7 0
3 years ago
What is the value in 4s in 14,423
Savatey [412]

In the number 14,423, the digit '4' comes up twice, in the thousand and hundred position.

The farther to the left a digit is, the higher that number is compared to another digit to the right of it.

This is why 1,000 is higher than 999.

In the number 14,423, there are two values for four: thousand (four thousand) and hundred (four hundred)

3 0
3 years ago
Read 2 more answers
What does pq equal and how do I find it???
Kay [80]
Use trigonometry.

sinQ = 14/50 = 0.28
-> angle Q = sin^-1(0.28) = approx 16 degrees

-> cosQ = A/H -> cos16 = PQ/50

=> PQ = 50*cos16 = approx 48.06

So yea.
3 0
3 years ago
Plzz help me <br><br> Solve -24 = 6x. Show your work.
ZanzabumX [31]

Answer:

x = -4

Step-by-step explanation:

-24 = 6x

________

Switch sides:

6x = -24

________

Divide both sides by 6:

6x/6 = -24/6

________

Simplify:

X = -4

3 0
3 years ago
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