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Elza [17]
3 years ago
13

Solve using system of equations

Mathematics
1 answer:
IgorC [24]3 years ago
8 0

Answer:

x=8

Step-by-step explanation:

set both equations equal to each other

x^2-3x-10=-2x=2

combine like terms

x^2=1x+8

x+8

Hope this helps!

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According to a study conducted by the Gallup Organization, the the proportion of Americans who are afraid to fly is 0.10. A rand
notsponge [240]

Answer: 0.1457

Step-by-step explanation:

Let p be the population proportion.

Given: The proportion of Americans who are afraid to fly is 0.10.

i.e. p= 0.10

Sample size : n= 1100

Sample proportion of Americans who are afraid to fly =\hat{p}=\dfrac{121}{1100}=0.11

We assume that the population is normally distributed

Now, the probability that the sample proportion is more than 0.11:

P(\hat{p}>0.11)=P(\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}>\dfrac{0.11-0.10}{\sqrt{\dfrac{0.10(0.90)}{1100}}})\\\\=P(z>\dfrac{0.01}{0.0090453})\ \ \ [\because z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}} ]\\\\=P(z>1.1055)\\\\=1-P(z\leq1.055)\\\\=1-0.8543=0.1457\ \ \ [\text{using z-table}]

Hence, the probability that the sample proportion is more than 0.11 = 0.1457

3 0
3 years ago
At 8:00 a.m., the temperature was −6°F. By noon, the temperature had risen by 9°F. What was the temperature at noon?
olya-2409 [2.1K]
The answer is orange because I think that is the answer
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Find an ordered pair (x y) that is a solution to the equation calculator
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Another answer to your question would be 4,1.
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hmm, they try to make it difficult

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sqrt
r=9

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h=-4+24
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C
</span>
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Which shows a reflection of the triangle?
lora16 [44]
C, or the last photo, shows a reflection.
4 0
3 years ago
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