All categories

2 years ago

Help help help help help help

Mathematics

1 answer:

Furkat [3]2 years ago

5 0

$\huge\bold{\purple{\bold{⚡133°⚡}}}$

Step-by-step explanation:

Co interior angles' sum is 180°

So, 180-67=133
133°

You might be interested in

Helppppppppp pleaseee

shutvik [7]

The rate of change is +2

as an ordered pair it would be (1,-3),(2,-1)(3,1),(4,3)

4 0

3 years ago

Read 2 more answers

Cindy spends 2 hours doing English, Geometry and History homework. It takes her 35 minutes to do English homework and 55 minutes

Vikki [24]

Ok! So first, 2 hours are 120 minutes and 55 + 35 = 90
120 - 90 = 30
So the answer is A. Cindy spends 30 minutes on History
Hope it helps!

4 0

3 years ago

5. The superintendent of the local school district claims that the children in her district are brighter, on average, than the g

anygoal [31]

Answer:

We conclude that children in district are brighter, on average, than the general population.

Step-by-step explanation:

We are given the following data set:

105, 109, 115, 112, 124, 115, 103, 110, 125, 99

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1117}{10} = 111.7$

Sum of squares of differences = 642.1

$S.D = \sqrt{\frac{642.1}{49}} = 8.44$

We are given the following in the question:

Population mean, μ = 106

Sample mean, $\bar{x}$ = 111.7

Sample size, n = 10

Alpha, α = 0.05

Sample standard deviation, s = 8.44

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 106\\H_A: \mu > 106$

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

Formula:

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

Putting all the values, we have

$t_{stat} = \displaystyle\frac{111.7 - 106}{\frac{8.44}{\sqrt{10}} } = 2.135$

Now,

$t_{critical} \text{ at 0.05 level of significance, 9 degree of freedom } = 1.833$

Since,

$t_{stat} > t_{critical}$

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

We conclude that children in district are brighter, on average, than the general population.

4 0

3 years ago

PLEASE HELP ME ASAP :D

Ivanshal [37]

Answer: The answer is 5^5.

Step-by-step explanation:I don't know

sorry for taking so long

i got this from my sis and she just didn't give me an explanation.

3 0

1 year ago

Can someone tell me what x equals!

Zinaida [17]

Answer:

Step-by-step explanation:

hope u find this helpfull

5 0

3 years ago

Read 2 more answers