All categories

4 years ago

HELP WITH BOTH PLEASE ASAP URGENT BRAINIEST TO CORRECT ANSWER!!!!!!!

Mathematics

1 answer:

Marat540 [252]4 years ago

8 0

B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B B

You might be interested in

Zoe rides for 2 hours and is 12 miles from her house. After riding for 4 hours, she is 22 miles away. What is Zoe’s rate?

Sindrei [870]

Answer:

Step-by-step explanation:

plus the number it's easier

7 0

4 years ago

Suppose f(x) = x^2 - 4. Find the graph of f(1/4x)

allsm [11]

The graph is a parabola with a vertex at -4

4 0

3 years ago

If ABCDE is translated 2 units to the right and 4 units up, what will happen to

patriot [66]

Answer:

C. It will move but won't change shape or size

Step-by-step explanation:

Translations do NOT affect shape or size, only position.

6 0

3 years ago

Read 2 more answers

What is the answer to this equation? (picture attached)

SashulF [63]

Answer:

x = $\frac{42}{5}$

Step-by-step explanation:

Given

19 - $\frac{5x+6}{4}$ = 7 ( subtract 19 from both sides )

- $\frac{5x+6}{4}$ = - 12

Multiply both sides by - 4 to clear the fraction and the negative signs

5x + 6 = 48 ( subtract 6 from both sides )

5x = 42 ( divide both sides by 5 )

x = $\frac{42}{5}$

6 0

4 years ago

Results of a survey conducted in 15 large cities within the U.S. finds that the average commute time one way to/from work is 25.

irina1246 [14]

Answer:

We conclude that commute time in her city is less than the amount reported by the survey which is 25.4 minutes.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 25.4 minutes

Sample mean, $\bar{x}$ = 22.1 minutes

Sample size, n = 15

Alpha, α = 0.10

Sample standard deviation, s = 5.3 minutes

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 25.4\text{ minutes}\\H_A: \mu < 25.4\text{ minutes}$

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

Formula:

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

Putting all the values, we have

$t_{stat} = \displaystyle\frac{22.1 - 25.4}{\frac{5.3}{\sqrt{15}} } = -2.411$

Now, $t_{critical} \text{ at 0.10 level of significance, 14 degree of freedom } = -1.345$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis.

Thus, there is enough evidence to conclude that commute time in her city is less than the amount reported by the survey which is 25.4 minutes.

7 0

4 years ago