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dsp73
3 years ago
5

Use substitution to write an equivalent quadratic equation. (3x + 2)2 + 7(3x + 2) – 8 = 0

Mathematics
2 answers:
ANEK [815]3 years ago
6 0
Let z = 3x+2. Then, by substitution, your equation is
.. z^2 +7z -8 = 0

_____
This equation can be factored as
.. (z +8)(z -1) = 0
.. x = -8 or +1
Then
.. 3x +2 = -8 or +1
.. 3x = -10 or -1
.. x = -10/3 or -1/3

nirvana33 [79]3 years ago
3 0
CORRECT ANSWER : u^2+7u-8=0, where u=3x+2
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A rock concert promoter scheduled an outdoor concert on July 4th. If it does not rain, the promoter will make $30,427. If it doe
Zielflug [23.3K]

For the probability of rain on julty 4h of 0.5 his expected profit is  8885.5 dollars.

<h3>What is probability?</h3>

The probability is occurrence of a certain event out of the total number f events that can happen.

Given in the question the probability of rain is 0.5 therefore the probability of not raining is also 0.5.

If it does not rain he makes a profit of 30427 dollars and if it rains he suffers a loss of 12656 dollars.

We know, the expected profit is,

= 0.5(30427) - 0.5(12656).

= 15213.5 - 6328.

= 8885.5 dollars.

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8 0
1 year ago
Which list of ordered pairs does NOT represent a function? A.(8, 80), (6, 80), (3, 80), (7, 80), (5, 80) B. (7, 80), (6, 60), (5
olga_2 [115]

Answer:

A

Step-by-step explanation:

Because they want you to see the number who is repeating like 80 in the later A is 4 times repeated. I hope it help

3 0
2 years ago
How many centiliters are in 6.02 decaliters?
Aloiza [94]
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6 0
3 years ago
Write 0.00000000000801 in scientific notation.
Nana76 [90]

801 \times  {10}^{ - 14} = 8.01 \times  {10}^{ - 12}

Done...

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3 0
3 years ago
3.232-4= <br>pls help me I need help​
Harlamova29_29 [7]

Answer:

the answer is −0.768

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4 0
3 years ago
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