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3 years ago

Estimate the square root of -54 to the nearest integer

Mathematics

1 answer:

Kitty [74]3 years ago

8 0

Answer:

7.34846923

Step-by-step explanation:

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In recent years major league baseball games have averaged three hours in duration. However, because games in Denver tend to be h

lara31 [8.8K]

Answer:

We conclude that the games in Denver would be longer than major league baseball games.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 180 minutes

Sample mean, $\bar{x}$ = 185.54 minutes

Sample size, n = 81

Alpha, α = 0.05

Sample standard deviation, s = 24.6 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 180\text{ minutes}\\H_A: \mu > 18\text{ minutes}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{185.54 - 180}{\frac{24.6}{\sqrt{81}} } = 2.026$

Now,

$t_{critical} \text{ at 0.05 level of significance, 80 degree of freedom } = 1.664$

Since,

$t_{stat} > t_{critical}$

We fail to accept the null hypothesis and reject it.

We accept the alternate hypothesis.

We conclude that the games in Denver would be longer than major league baseball games.

8 0

3 years ago

A scale drawing for a 36.7-ft wide billboard is 0.51 ft wide. how many times bigger

frutty [35]

Answer:

71.9607843

Step-by-step explanation:

Well the drawing is 36.7 ft and the billboard is 0.51 ft. So we just have to do some simple division 36.7/0.51 multiply both by 100 to get 3670/51 and that will lead you to 71.9607843 It's a weird number but i believe its correct! Hope this was helpful!

4 0

2 years ago

Write the decimal and fraction in simplest form to represent the shaded portion of

Kamila [148]

Answer:

The decimal in simplest form is .625, and the fraction in simplest form is 5/8.

Step-by-step explanation:

To find the decimal that represents the shaded area, you have to find the fraction 5/8 and divide 5 by 8

Hope this helps!

8 0

3 years ago

Can someone help me please

Dafna1 [17]

Answer:

none

Explanation:

Fill in each option for x individually.

I) 9 $\leq$ -10 - 4(-1)

II) 9 $\leq$ -10 - 4(-3)

III) 9 $\leq$ -10 - 4(-2)

Then, simplify the right side of each inequality.

I) 9 $\leq$ -6

II) 9 $\leq$ 2

III) 9 $\leq$ -2

Each of these inequalities are flase. 9 is not less than or equal to any of these values, so the answer is none.

3 0

3 years ago

Tom's mark of a maths test was 68.This was 20% worse than his mark in English.what was Tom's English mark ?

Shkiper50 [21]

98 would be his english mark

5 0

3 years ago