PLEASE HELP!! I will give brainliest!

If the simple interest on $4000 for 2 years is $400, then what is the interest rate?

ivanzaharov [21]

Step-by-step explanation:

the answer is 5 percentage because the formula is 100 * 400 over 4000 * 2

6 0

2 years ago

Given the following system of equations, identify the type of system.

ICE Princess25 [194]

Answer:

The two lines in the graph are parallel, so it is B. Inconsistent since there is no solution.

7 0

3 years ago

Read 2 more answers

A group of workers can plant 54 acres in 9 days. What is their rate in acres per day?

telo118 [61]

Answer:

6 acres per day

Step-by-step explanation:

Take the total acres planted (54) and divide the number of days (9) to get the acres per day (6)

3 0

2 years ago

For a given input value x, the function h outputs a value y to satisfy the following equation 6x+y=4x+11y. Write a formula for h

Tanzania [10]

Answer: h(x) = $\frac{1}{5}x$

Step-by-step explanation:

6x + y = 4x + 11y

-y -y

6x = 4x + 10y

-4x -4x

2x = 10y

÷10 ÷10

$\frac{1}{5}x$ = y

Since "y" represents h(x), then h(x) = $\frac{1}{5}x$

5 0

3 years ago

A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought i

garri49 [273]

Answer:

The degrees of freedom first given by:

$df=n-1=12-1=11$

Then we can find the critical value taking in count the degrees of freedom and the alternative hypothesis and then we need to find a critical value who accumulates 0.05 of the area in the right tail and we got:

$t_{\alpha}= 1.796$

And for this case the rejection region would be:

b) Reject H0 if tcalc >1.7960

Step-by-step explanation:

Information given

5, 7, 4, 6, 7, 5, 5, 6, 4, 4, 7, 5.

System of hypothesis

We want to test if the true mean is higher than 5, the system of hypothesis are :

Null hypothesis: $\mu \leq 5$

Alternative hypothesis: $\mu > 5$

The statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

The degrees of freedom first given by:

$df=n-1=12-1=11$

Then we can find the critical value taking in count the degrees of freedom and the alternative hypothesis and then we need to find a critical value who accumulates 0.05 of the area in the right tail and we got:

$t_{\alpha}= 1.796$

And for this case the rejection region would be:

b) Reject H0 if tcalc >1.7960

6 0

3 years ago

PLEASE HELP!!I will give brainliest!