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tester [92]
3 years ago
15

What is the simplest form of (3x+20)²

Mathematics
1 answer:
lozanna [386]3 years ago
4 0

Step-by-step explanation:

(3x+20)² is the same as

(3x+20)(3x+20)

you need to have for different numbers

SO

3x*3x is 9x²

3x*20 is 60x

20*3x is also 60x

20*20 is 400

put it together

9x²+60x+60x+400

simplify to

9x²+120x+400

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Solve X + 5 + 6x = 180. What are the steps?
Elenna [48]

Answer:

x=25

Step-by-step explanation:

x+5+6x=180

7x+5=180

7x=175

x=25

3 0
3 years ago
Factor the GCF: 21x3y4 + 15x2y2 − 12xy3.
-Dominant- [34]
Ugh, these questions.

21x^3y^4 + 15x^2y^2 - 12xy^3

3xy^2 (7x^2y^2 + 5x - 4y)

Clearing up clutter...

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6 0
3 years ago
Read 2 more answers
66 athletes are running a race. A gold medal is to be given to the winner, a silver medal is to be
Dmitrij [34]

Answer:

274560

Step-by-step explanation:

We can "choose" one of the 66 athletes for the gold medal. That athlete can't win any other medals, so there are 65 athletes left.

We can then "choose" one of the 65 athletes left for the silver medal. That athlete can't win any other medals, so there are 64 athletes left.

We can then "choose" one of the 64 athletes left for the bronze medal.

That leaves us with 66 possible choices * 65 possible choices * 64 possible choices=274560 possible choices

8 0
2 years ago
A 14 foot ladder is leaning against a building. The ladder makes a 45 degree angle with the building. How far up the building do
3241004551 [841]
Sin 45 = X / 14
X = 14 * sin45
X = 7√2≈9.89949
Thus ladder will reach to ≈ 9.9 (rouded-up) foot height in the building
5 0
3 years ago
A city has 5 new houses for every 9 old houses. If there are 35 new houses in the city, how many old houses are there?
Nezavi [6.7K]

Answer:

C.) 63

Step-by-step explanation:

You know what you insisted on me answering, so I'll answer here.

35 ÷ 5 = 7

7 x 9 = 63

7 0
3 years ago
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