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3 years ago

REEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE

Mathematics

2 answers:

Mandarinka [93]3 years ago

5 0

Answer:

-83 1/3 > -83.518

Step-by-step explanation:

-8 1/3 = -8.333333...

Andrei [34K]3 years ago

5 0

YEAH WHAT SHE SAId 28’sjsowixu

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The sum of a number and -7 is equal to 40.<br> Write the equation

Luba_88 [7]

Answer:

Step-by-step explanation:

-7 + 47=40

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3 years ago

Read 2 more answers

The picture is up there thank you!

Dmitrij [34]

Answer:

Step-by-step explanation:

because it is the most # of pictures

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4 years ago

Suppose a medium pizza at Vincent’s costs $6.75 plus $0.75 for each topping, and the cost of a medium pizza at Original Italian

lapo4ka [179]

Answer:

12 toppings

Step-by-step explanation:

There's a 60 cent difference in the base price, and the price of toppings is a 5 cent difference, so it would take 60/5 or 12 toppings to make up the difference. r, you can make a chart. Or you can do algebra and solve an equation:

6.75 + .75 x = 6.15 + .8x where x is the number of toppings. Subtract 6.15 from both sides.

.60 + .75x = .8 x Subtract .75x from both sides

.60 = .05x Divide both sides by .05

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4 years ago

Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are

jasenka [17]

Answer:

The indicated confidence interval for the difference between the two population means is (-1.5159, 7.5159)

Step-by-step explanation:

Let the drying times of type A be the first population and the drying times of type B be the second population. Then

We have small sample sizes $n_{1} = 11$ and $n_{2} = 9$ , besides $\bar{x}_{1} = 71.5$ , $s_{1} = 3.4$ , $\bar{x}_{2} = 68.5$ and $s_{2} = 3.6$ . Therefore, the pooled

estimate is given by

$s_{p}^{2} = \frac{(n_{1}-1)s_{1}^{2}+(n_{2}-1)s_{2}^{2}}{n_{1}+n_{2}-2} = \frac{(11-1)(3.4)^{2}+(9-1)(3.6)^{2}}{11+9-2} = 12.1822$

The 99% confidence interval for the true mean difference between the mean drying time of type A and the mean drying time of type B is given by

$(\bar{x}_{1}-\bar{x}_{2})\pm t_{0.01/2}s_{p}\sqrt{\frac{1}{11}+\frac{1}{9}}$ , i.e.,

$(71.5-68.5)\pm t_{0.005}(3.4903)\sqrt{\frac{1}{11}+\frac{1}{9}}$

where $t_{0.005}$ is the 0.5th quantile of the t distribution with (11+9-2) = 18 degrees of freedom. So

$3\pm(-2.8784)(3.4903)(0.4495)$ , i.e.,

the indicated confidence interval for the difference between the two population means is (-1.5159, 7.5159)

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3 years ago

What's is 7x90 it not hard it's not easy it medium

Leya [2.2K]

90 × 7 = 630 , it's not hard, it's easy

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3 years ago