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denis23 [38]
3 years ago
13

F(x)=x^2+11x+20, find x when f(x)=−8

Mathematics
2 answers:
vesna_86 [32]3 years ago
4 0

Answer:

i need help 2

Step-by-step explanation:

kodGreya [7K]3 years ago
4 0

Answer:

172

2162203625

12345

jóín gírls

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An element with mass 670 grams decays by 27.3% per minute. How much of the element is remaining after 9 minutes, to the nearest
ArbitrLikvidat [17]
There will be 38 grams remaining.

The equation would be of the form
y = a(1+r)ˣ, where a is the initial value, r is the rate as a decimal number, and x is the amount of time.  Using our values from the problem, we have:

y = 670(1-0.273)^9 = 670(0.727)^9 = 38
6 0
3 years ago
Read 2 more answers
A student has an average of 78 on seven chapter tests. If the student's scores on six of the tests are 76, 74, 76, 80, 83, and 9
zhenek [66]

Answer:

The score is 66

Step-by-step explanation:

Say the unknown score is x

Average = Total score/no of occurrence

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78 × 7 = x + 76 + 74 + 76 + 80 + 83 + 91

546 = x + 480

546 - 480 = x

66 = x

∴ x = 66

4 0
3 years ago
The area of fort worth is 139.1 square miles greater than the area of denver. the area of denver is 67.7 square miles greater th
cluponka [151]
292.5-139.1=153.4
153.4-67.7=85.7
Area of honolulu is 85.7 square miles.
4 0
3 years ago
How do you Simplify (3a^2)^3
mamaluj [8]
When a number with an exponent is raised to an exponent, you multiply the two exponents together to get the combined exponent of the simplified version.
Let's take our exponents, 2 and 3, and multiply them.

2 x 3 = 6

Therefore we can apply the sixth power to 3a for our final answer of 3a⁶.

Hope this helped!

4 0
3 years ago
Simone, buys one charger for $ 1.59 and phone popsockets $0.29 for each. She spends a total of $5.07. If there is no sales tax a
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Answer:

it is B i took the quiz

Step-by-step explanation:

hope it helps

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3 years ago
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