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3 years ago

Please answer correctly for brainliest

Mathematics

1 answer:

Stels [109]3 years ago

3 0

Answer:

Y=-3x+2

Step-by-step explanation:

Good luck!!!

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Are two isosceles triangles always similar? Explain. (1 point)

lara [203]

Answer:

No, because the ratios of the sides that form the vertex angles are the same, but the vertex angles may not be congruent.

Step-by-step explanation:

I just took the quick check

8 0

3 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

Simplify 3+[5-2(4+1)]

zavuch27 [327]

Answer: 18

Proof:

Step 1: Add what's in the parentheses - (4+1) = 5

Step 2: Subtract 5 - 2 and multiply that by the sum of the parentheses - 5-2 = 3(5) = 15

Step 3: Add 3 - 15 + 3 = 18

6 0

3 years ago

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When you graph the system of inequalitites shown below, which of the following statements is TRUE?

Andre45 [30]

The answer is A. Hope this helps!

3 0

4 years ago

HELP ME PLEASE<br> What can you tell about the initial value and the y-intercept?

coldgirl [10]

The y intercept is when x=0
x is the depdendent numer
when x=0 (or when no change has occured), the y intercept is te starting value

example
a car is at the 1 mile mark
if it goes 10 miles per hour, what mark will it be at in 10 minutes
distance=10x+1
1 is starting point, when x=0, or when the car hasn't traveld at all

yint is the initial value of the function

5 0

3 years ago

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