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3 years ago

I do not understand this problem could someone help me

Mathematics

2 answers:

Mariana [72]3 years ago

6 0

total donated=amount donated per month times number of months

amount donated per month=18.18

number of months=12

total donated=18.18*12=$218.16

answer is D

kompoz [17]3 years ago

3 0

you just do 18.18 times 12 so you'd get

$218.16

so the answer is D

hope this helps:)

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AlexFokin [52]

Answer:

142.85

Step-by-step explanation:

1000 divided by 7

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2 years ago

Thirty-three college freshmen were randomly selected for an on-campus survey at their university. The participants' mean GPA was

Ivan

Answer: $\pm0.1706$

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of $\alpha:0.05$ : $z_{\alpha/2}= 1.96$

Sample mean : $\overline{x}=2.5$

Standard deviation : $\sigma= 0.5$

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Margin of error : $E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

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3 years ago

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mrs_skeptik [129]

Answer:

Step-by-step explanation:

4 x 10= 40

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8 0

2 years ago

Read 2 more answers

What is the solution to the system of equations 2x-y=7 and y=2x+3

Yuri [45]

Make y the subject in both equations

$2x-y=7$

$-y=-2x+7$

$y=2x-7$

For the second equation

$y=2x+3$

The two equations are parallel because they have the same gradient or slope but different y intercepts.

This type of equations have no solution because they will never intersect.

$NO SOLUTION$

The correct answer is C

6 0

2 years ago

Can someone please help with this question

maksim [4K]

Answer:

X = 7.2

Step-by-step explanation:

Hello

For the triangle of right side, using Pytagoras:

(2.5)^2 + b^2 = 6^2

6.25 + b^2 = 36

b^2 = 36 - 6.25

b^2 = 29.75

b = 5.45

Now we can to find X using again Pytagoras:

3^2 + (5.45)^2 = x^2

9 + 29.75 = x^2

38.75 = x^2

X = 7.2

Best regards

5 0

2 years ago