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inn [45]
3 years ago
12

Hello :) Please help me solve this Explain answer

Mathematics
2 answers:
FrozenT [24]3 years ago
7 0
D is the correct answer i think
melisa1 [442]3 years ago
7 0

Answer:

A

Step-by-step explanation:

look at the graph I made  and compare prices for both prices

m=29.04-7.26 /12-3

m = 21.78 / 9

m= 2.42

y-7.26=2.42(x-3)

y =2.42x

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2) In a set of data that show a normal distribution the mean is 7.8 and the standard deviation is 1.7. What is the proportion of
abruzzese [7]
First, we get the z-score using formula:
z =( X - μ ) / σ

From the problem, we substitute the given values:
z = (9 - 7.8) / 1.7
z = 0.71

From the z-table (one-tailed), for a z-score of 0.7059, the proportion of numbers that are greater than 9 is  0.76.
6 0
3 years ago
Sterre charges $35 to file tax returns, but files for free if she only needs the easiest form. Then she donates $2 to clean wate
borishaifa [10]

We have been given that Sterre charges $35 to file tax returns, but files for free if she only needs the easiest form. Also, she donates $2 to clean water projects per tax return she files.

Further we know that Sterre charged $7,245 and made a donation of $1,242 this year for the tax returns she filed.

Let x be the number of free income tax returns and y be the number of $35 income tax returns.

Therefore, we can set up:

0\times x+35\times y=7245\Rightarrow 35y=7245\Rightarrow y=\frac{7245}{35}=207

Since she donates $2 for each return that she files, therefore, we can set up:

2(x+y)=1242\Rightarrow x+y=621\Rightarrow x+207=621\Rightarrow x=414

Therefore,

Sterre filed 414 tax returns for free and filed 207 tax returns for $35.

7 0
3 years ago
How do you find a common denominator?​
Dennis_Churaev [7]
You can just use the app SnapCalc it answers anything for free
4 0
3 years ago
7 × (–3) × (–2)2 = ?
andre [41]

Answer:

84

Step-by-step explanation:

<u>Order of operations (Parentheses first, exponents next, then multiplication, etc.)</u>

-3 * -2 = 6

<u>Multiply</u>

7 * 6 = 42

42 * 2 = 84

4 0
3 years ago
Read 2 more answers
Three friends each created 4 bags of starter dough. After ten days, each of those four bags is then divided into four more bags
sveta [45]
192/4=48
your answer is 48
6 0
3 years ago
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