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3 years ago

(-m^2+6)+(-4m^2+7m+2)

Mathematics

1 answer:

marta [7]3 years ago

4 0

Answer:

$-5m^2+7m+8$

Step-by-step explanation:

We are given the equations

$(-m^2+6)+(-4m^2+7+2)$

We need to combine like terms. As there are no exponents or numbers outside the parenthesis, we can just drop them and add all like terms

$-m^2+6-4m^2+7m+2\\\\-5m^2+7m+8$

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The x-y is the answer can someone please explain to me how to do

guapka [62]

Answer:

Step-by-step explanation:

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4 0

4 years ago

Read 2 more answers

There is a state soccer tournament with 128 teams competing for 1st place. Each week, half of the teams get eliminated. How many

Vilka [71]

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3 years ago

A random sample of 200 voters in a town is selected, and 114 are found to support an annexa- tion suit. Find the 96% confidence

EastWind [94]

Answer:

a) 96% CI: $0.51\leq\pi\leq 0.63$

b) If we estimate that the fraction of voters is 0.57, we can claim with 96% confidence that the error is equal or less than 0.06 from the estimated proportion.

Step-by-step explanation:

The proportion of the sample is

$p=\frac{114}{200}=0.57$

The standard deviation of the sample proportion is

$\sigma=\sqrt{\frac{p(1-p)}{n} } =\sqrt{\frac{0.57(1-0.57)}{200} } =\sqrt{\frac{0.2451}{200} } =0.035$

For a 96% CI, the z-value is z=1.751.

Then, the 96% CI can be written as:

$p-z\cdot \sigma\leq\pi\leq p+z\cdot \sigma\\\\0.57-1.751*0.035\leq\pi\leq 0.57+1.751*0.035\\\\0.57-0.06\leq\pi\leq 0.57+0.06\\\\0.51\leq\pi\leq 0.63$

b) If we estimate that the fraction of voters is 0.57, we can claim with 96% confidence that the error is equal or less than 0.06 from the estimated proportion.

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4 years ago

Solve for p: 1/4p = 11 a) p = 7 b) p = 15 c) p = 30 d) p = 44

NISA [10]

Hello!

Explanation:

First, you had to do is multiply by 4 from both sides of an equation.

$4*\frac{1}{4}p=11*4$