3 years ago

Which value could go in the blank cell so that the percentage of only children that

Mathematics

1 answer:

babunello [35]3 years ago

8 0

Answer:

maybe B

I am not to my answer

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Isidro wants to purchase a used scooter that costs 79.95 the sales tax is found by multiplying the price of the scooter by 0.065

OLEGan [10]

Answer:

85.15

Step-by-step explanation:

79.95 x 0.065 = 5.197

79.95 + 5.197 = 85.15

5 0

2 years ago

Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8

drek231 [11]

Answer:

95% Confidence interval: (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

Sample mean, $\bar{x}$ = 100

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 11

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$100 \pm 1.96(\frac{11}{\sqrt{30}} ) = 100 \pm 3.94= (96.06,103.94)$

(96.06,103.94) is the 95% confidence interval for the population mean test score.

8 0

2 years ago

why does the multiplication property of equality not allow us to divide both sides of an equation by zero

AlladinOne [14]

I’m not sure you can look this up

5 0

3 years ago

Which equation has a graph that is a parabola with a vertex at (5,3)?

lara [203]

Answer:

y = (x -5)² + 3.

Step-by-step explanation:

Given : parabola with a vertex at (5,3).

To find : Which equation has a graph that is a parabola.

Solution : We have given vertex at (5,3).

Vertex form of parabola : y = (x -h)² + k .

Where, (h ,k ) vertex .

Plug h = 5 , k= 3 in vertex form of parabola.

Equation :y = (x -5)² + 3.

Therefore, y = (x -5)² + 3.

6 0

3 years ago

How do you write <br>78/50<br> as a percentage?

Phoenix [80]

That would be 156%. have a great day

8 0

3 years ago

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