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3 years ago

Rewrite the following phrase as a mathematical expression: twice a number increased by eighteen. 2n + 18 18n + 2 2 + 18 2(18n)

Mathematics

2 answers:

VladimirAG [237]3 years ago

3 0

I am not sure about the last two phrases, but here's what I think.
2(n+18)
18(2+n)

Firdavs [7]3 years ago

3 0

The last one would be multiple
2•(18•n)

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dimulka [17.4K]

Answer:

99% CI:

$-4.637\leq\mu_v-\mu_o\leq 3.737$

Step-by-step explanation:

We have to calculate a 99%CI for the difference of means for the vegan and the omnivore.

First, we have to estimate the standard deviation

$s_{Md}=\sqrt{\frac{2MSE}{n_h}}$

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$MSE=\frac{(SSE_1+SSE_2)}{df} =\frac{(n_1s_1)^2+(n_2*s_2)^2}{n_1+n_2-2}\\\\MSE=\frac{(85*1.05)^2+(96*1.20)^2}{85+96-2}=\frac{7965.56+13272.04}{179} =118.65$

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The standard deviation then becomes

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3 years ago

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You would set it up like this: 150x + 280 = 255x The you just solve.

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3 years ago

The surface area of a cube is 560,000 square centimeters. How many square meters is this?

tresset_1 [31]

Answer:

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Step-by-step explanation:

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2 years ago

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SOCCER PRACTICE BEGAN AT 2:30 P.M 3:30 P.M THROUGH WHAT FRACTION OF A CIRCLE DID THE MINUTE HAND TURN HOW MANY DEGREES DID THE M

MrMuchimi

Answer:

1 /1 ; 360°

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Start time = 2:30 pm

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This means that the minutes hand revolves round the whole circle in one hour, hence fraction of the circle covered by the minute hand between 2:30 pm - 3:30 pm is 1/1 = 1

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