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photoshop1234 [79]
3 years ago
11

Need help with this first one to answer gets branliest

Mathematics
1 answer:
mel-nik [20]3 years ago
5 0

Answer:

-27

Step-by-step explanation:

Given: f(x)= -x^2+10x-16, g(x)= |11-2x^2|

f(9)= -(9)^2+10(9)-16

= -7

g(-5)= |11-2(-5)^2|

=39

Solve: 2[f(9)]-1/3[g(-5)]

= 2[(-7)] - 1/3[39]

= -27

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the numbers on the left are squares of the numbers of the right

Step-by-step explanation:

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3 years ago
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What Does The M And B Stand For In y=mx+b
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The 'm' stands for slope and the 'b' stands for the y-intercept, which is where the line crosses the y-axis.

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Jane was baking cookies. She needed 1/3 cup sugar and 1 2/4 cups flour. How much more flour does she need than sugar?
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Answer:

1 and 1/6 cups more

Step-by-step explanation:

1/3 cup sugar

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3 years ago
The life in hours of a 75-watt light bulb is known to be normally distributed with standard deviation σ = 25 hours. A random sam
irina [24]

Answer: a) (1008.34,1019.658) b) (1009.24,1018.76)

Step-by-step explanation:

Since we have given that

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At 95% two sided , z = 1.96

So, confidence interval would be

\bar{x}\pm z\dfrac{\sigma}{\sqrt{n}}\\\\=1014\pm 1.96\dfrac{25}{\sqrt{75}}\\\\=1014\pm 5.658\\\\=(1014-5.658,1014+5.658)\\\\=(1008.34,1019.658)

(b) Construct a 95% lower confidence bound on the mean life.

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So, confidence interval would be

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4 years ago
Simplify 27- 9+(12-5)÷4 with solution ​
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Step-by-step explanation:

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