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3 years ago

If correct you get 73 points what is 2+2+3=

Mathematics

2 answers:

taurus [48]3 years ago

8 0

Answer:7

Step-by-step explanation:

joja [24]3 years ago

4 0

Answer:

Step-by-step explanation:

the answer is 7

2+2 is 4+3 is7

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A student has a savings account with $475 in it. She deposits $125 of her paycheck into the account every week. Her goal is to s

Ahat [919]

9514 1404 393

Answer:

a. $850

b. 7 weeks

c. f(x) = 125x +475

d. see attached (3, 850), (7, 1350)

e. 53 weeks

Step-by-step explanation:

After 3 weeks, $125×3 = $375 will have been added to the $475 already in the account. The balance will be ...

$375 +475 = $850

The student will have to add $1350 -475 = $875 to her account to reach $1350. At a rate of $125 per week, that will take ...

$875/($125/week) = 7 weeks

The initial value is $475, and the rate of change is $125 per week, so the equation can be written ...

f(x) = 475 +125x . . . . . . . balance after x weeks

See the attached graph with the required points marked. (3, 850), (7, 1350)

It will take more than 53 weeks for the student to reach her goal. (After 52 weeks, the account will have $6975, so will be $25 short of the goal.)

7 0

3 years ago

Where would (2,-4) be on the coordinate plane?

IgorLugansk [536]

Answer:

fourth quadrant

Step-by-step explanation:

5 0

3 years ago

Find the area of the figure to the nearest tenth, if necessary.

Crazy boy [7]

Answer:

36 ft²

Step-by-step explanation:

Split the figure into two shapes.

Area of figure = Area of rectangle + Area of triangle

Area of rectangle:

$length \times width$

$length=8\\width=4$

$8 \times 4 = 32$

Area of triangle:

$\frac{base \times height}{2}$

$base=8-4=4\\height=2$

$\frac{4 \times 2}{2}$

$\frac{8}{2} =4$

Area of figure = $32 + 4 = 36$

7 0

3 years ago

Read 2 more answers

A manufacturer of coffee vending machines has designed a new, less expensive machine. The current machine is known to dispense (

cupoosta [38]

Answer:

$t=(15-1) [\frac{0.219}{0.2}]^2 =16.7864$

$p_v = 2*P(\chi^2_{14}>16.786)=0.5355$

And the 2 is because we are conducting a bilateral test.

$\alpha=0.05$ since the the $p_v >0.05$ we fail to reject the null hypothesis.

$\alpha=0.01$ since the the $p_v >0.01$ we fail to reject the null hypothesis.

Step-by-step explanation:

Data given

$\mu=7$ population mean (variable of interest)

$\sigma=0.2$ represent the population standard deviation

$s=0.219$ represent the sample deviation

n=15 represent the sample size

$\alpha=0.05,0.01$ represent the values for the significance level

Hypothesis test

On this case we want to check if the population standard deviation is equal or not to 0.2, so the system of hypothesis are:

H0: $\sigma = 0.2$

H1: $\sigma \neq 0.2$

In order to check the hypothesis we need to calculate the statistic given by the following formula:

$t=(n-1) [\frac{s}{\sigma_o}]^2$

This statistic have a Chi Square distribution distribution with n-1 degrees of freedom.

What is the value of your test statistic?

Now we have everything to replace into the formula for the statistic and we got:

$t=(15-1) [\frac{0.219}{0.2}]^2 =16.7864$

P value

We know the degrees of freedom of the distribution 14 on this case and we can find the p value like this:

$p_v = 2*P(\chi^2_{14}>16.786)=0.5355$

And the 2 is because we are conducting a bilateral test.

$\alpha=0.05$ since the the $p_v >0.05$ we fail to reject the null hypothesis.

$\alpha=0.01$ since the the $p_v >0.01$ we fail to reject the null hypothesis.

3 0

3 years ago

NO LINKS What is the surface area? 5 cm 8 cm 7 cm square centimeters

sveticcg [70]

Answer:

262 feet²

Step-by-step explanation:

2(5×8 + 5×7 + 8×7)

2(40+35+56)

2(131)

262

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hope it helps

6 0

3 years ago