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Ymorist [56]
3 years ago
9

Help me with this it's confusing :(

Mathematics
1 answer:
fredd [130]3 years ago
3 0
For the equation it would be y=my+b
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What will be the average of the first five<br> consecutive numbers starting from 11
S_A_V [24]

Answer:

  13

Step-by-step explanation:

The average of any 5 consecutive numbers is the 3rd one (the middle one of the group). The third consecutive number starting from 11 is 13.

The average of {11, 12, 13, 14, 15} is 13.

4 0
2 years ago
What number should be added to both sides of the equation to complete the square? X^2-10=7
Assoli18 [71]
I must assume that you meant   <span>X^2-10x =7.  If that is indeed the case, then:

</span>X^2-10x =7  =>  x^2 -10x + 25 - 25 = 7, so that (x-5)^2 = 32  (Add 25, then 
                                                                                                 subtract 25)
Then x-5 = plus or minus sqrt(16)sqrt(2) = 4sqrt(2).

Then x = 5 plus or minus 4 sqrt(2) (answers)
8 0
3 years ago
David bought a used car for $6,000 and later sold it for $4,000. What was the approximate percent decrease in the price of the c
Vanyuwa [196]

Answer:

percentage change= price change divided by original price x 100

Step-by-step explanation:

so answer = $2000 divided by $6000 x 100 = 33.3% decrease

7 0
3 years ago
Read 2 more answers
Micheal earns $3.90 per hour as a server at a restaurant. In addition,he earns an average of 18% tips on his food sales. Is the
Katena32 [7]

He earns 18% tips on his food sales. So, his tips are proportional to the amount of food he sells.

From what you know about the restaurant business, what would have to be true for his tips to be proportional to the amount of hours he works?

Do you think that situation (Michael's amount of food sales being the same every hour) is likely in a real restaurant?
6 0
3 years ago
Read 2 more answers
Mai wants to make an open top box by cutting out corners of a square piece of cardboard and folding up the sides. The cardboard
Bumek [7]

Answer:

V(x)=(4x^{3}-40x^{2}+100x)\ cm^3

The domain for x is all real numbers greater than zero and less than 5 com

Step-by-step explanation:

<em><u>The question is</u></em>

What is the volume of the open top box as a function of the side length x in cm of the square cutouts?

see the attached figure to better understand the problem

Let

x -----> the side length in cm of the square cutouts

we know that

The volume of the open top box is

V=LWH

we have

L=(10-2x)\ cm

W=(10-2x)\ cm

H=x)\ cm

substitute

V(x)=(10-2x)(10-2x)x\\\\V(x)=(100-40x+4x^{2})x\\\\V(x)=(4x^{3}-40x^{2}+100x)\ cm^3

Find the domain for x

we know that

(10-2x) > 0\\10> 2x\\ 5 > x\\x < 5\ cm

so

The domain is the interval (0,5)

The domain is all real numbers greater than zero and less than 5 cm

therefore

The volume of the open top box as a function of the side length x in cm of the square cutouts is

V(x)=(4x^{3}-40x^{2}+100x)\ cm^3

5 0
3 years ago
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