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3 years ago

- A right triangle has a hypotenuse of 5 feet. One leg measures one foot

Mathematics

1 answer:

adell [148]3 years ago

7 0

One leg measure is 4ft, the other is 3ft.

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Identify the vertex and zeros of the function.

kirza4 [7]

Answer:

zeros: x=-6, x=2

Vertex: (-2,-16)

Step-by-step explanation:

try using math-way

5 0

3 years ago

9. At soccer practice, Joan kicked the ball 22 feet. This was 3 feet shorter than Joe kicked the ball. Write and solve a subtrac

mote1985 [20]

X-22=3
x=25.
joe kicked the ball 25 feet

4 0

3 years ago

What is the answer for the following equation?<br><br>53 x 65 + 36 ÷ 5 = ?<br>

svet-max [94.6K]

Answer:

3452.2

Step-by-step explanation:

3452.2

6 0

3 years ago

Read 2 more answers

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

Write an expression of: divide B by 6, then subtract 3 from the result do not simplify any part of the expression

IrinaVladis [17]

Answer:(4-6)-h

Step-by-step explanation:

7 0

3 years ago