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3 years ago

60 POINTS

2 answers:

6 0

If <span>Sarah's daily income is represented by the variable y and the amount her customers spend is represented by the variable x, then the answer is
</span><span>y = 0.15x + 50 </span>

pychu [463]3 years ago

3 0

she makes 50 per day so that would be the constant number

o you have y = 50 + something

her tips are 15% , which is 0.15x

so her pay would be y = 0.15x +50

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Is -14 a natural number, whole number, integer, rational or irrational number?

Sveta_85 [38]

Answer:

Step-by-step explanation:

-14 is an integer

We can also tell as rational number

as -14 can be written in the form p/q, ie -14/1

7 0

3 years ago

How many solutions does an equation have when you isolate the variable and it equals a constant

Olin [163]

There is only one solution since x=0 x cant be many things since the only thing that would make this true is 0

3 0

3 years ago

A group of 54 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic

aliya0001 [1]

Answer:

P-value = 0.4846

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 4.73

Sample mean, $\bar{x}$ = 4.35

Sample size, n = 51

Alpha, α = 0.05

Sample standard deviation, s = 3.88

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 4.73\\H_A: \mu \neq 4.73$

We use Two-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{4.35 - 4.73}{\frac{3.88}{\sqrt{51}} } = -0.699$

Now, $z_{critical} \text{ at 0.05 level of significance } = \pm 1.96$

We can calculate the p-value with the help of standard normal table.

P-value = 0.4846

Since the p-value is higher than the significance level, we fail to reject the null hypothesis and accept it.

We conclude that this college has same drinking habit as the college students in general.

7 0

3 years ago

Ben is 4 times as old as Izzy and is also 6 years older than Izzy. How old is Izzy

Arlecino [84]

Answer:

2 years

Step-by-step explanation:

Let B = age on Ben

and age of Izzy =I

B =4I

B = 6+I

Gives 6+I = 4I

6 = 3I

I =2 years and B = 4x2 = 8years

Age of Izzy = 2 years

6 0

3 years ago

The circumference of a circle is 15 meters. Determine the diameter. Use 3 for pie.

erik [133]

Answer:

4.77

if u use 3 for pie its 5

Step-by-step explanation:

formula is d=c/pie

so d=15/pie

d=4.77

5 0

3 years ago