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erma4kov [3.2K]
3 years ago
11

PLEASE HELP!!!!!! In which week was the rainfall in Portland the highest and how much fell?

Mathematics
1 answer:
garik1379 [7]3 years ago
5 0

Answer:

Week 4, 1400

Brainliest plz

Step-by-step explanation:

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Please help with this question. Thank you.
podryga [215]

Answer:

t = 4

Step-by-step explanation:

Substitute the variables with the information provided.

205 = 100 + 12(6) + 5(t) + 7(4) + 5(5) - 8(5)

Simplify

205 = 100 + 72 + 5t + 28 + 25 - 40

20 = 5t

t = 4

5 0
3 years ago
Find all solutions to x³+3x² − 9x − 27 = 0 by factoring the equation.
SCORPION-xisa [38]

Answer:

The solutions are x=-3,\:x=3

Step-by-step explanation:

To factor this cubic polynomial x^3+3x^2-9x-27 you must:

  • Group the polynomial into two sections

x^3+3x^2-9x-27=\left(x^3+3x^2\right)+\left(-9x-27\right)

  • Factor out -9 from (-9x-27)

(-9x-27)=-9\left(x+3\right)

  • Factor out x^2 from (x^3+3x^2)

(x^3+3x^2)=x^2\left(x+3\right)

x^3+3x^2-9x-27=-9\left(x+3\right)+x^2\left(x+3\right)

  • Factor out common term x+3

-9\left(x+3\right)+x^2\left(x+3\right)=\left(x+3\right)\left(x^2-9\right)

x^3+3x^2-9x-27=\left(x+3\right)\left(x^2-9\right)

  • Factor x^2-9

x^2-9=\left(x+3\right)\left(x-3\right)

x^3+3x^2-9x-27= \left(x+3\right)\left(x+3\right)\left(x-3\right)

x^3+3x^2-9x-27=\left(x+3\right)^2\left(x-3\right)=0

  • Using the Zero Factor Theorem: = 0 if and only if = 0 or = 0

x+3=0, \quad{x=-3}\\x-3=0, \quad{x=3}

The solutions are

x=-3,\:x=3

3 0
3 years ago
Find the whole.<br> 500​% of what number is 4,800​?
alexgriva [62]
Answer: 9.6
Explanation: if 500% is 4800 we would need to divide 4800 by 500 to find 1%
4800/500= 9.6
5 0
3 years ago
Read 2 more answers
Can someone help me plz
koban [17]

inaccurate

3 less than would be x-3, but 3-x would be 3 more

6 0
3 years ago
Please help me! That would be great if you can.
erik [133]
Answer should be 3 I’m pretty sure
5 0
3 years ago
Read 2 more answers
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