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Andreas93 [3]
3 years ago
8

Fancy Nails charges $28 for a pedicure plus $9 for each treatment. Lara's Nails charges $22 for

Mathematics
2 answers:
spin [16.1K]3 years ago
8 0

Answer:

It's B.3

Step-by-step explanation:

Substitution. With the equation Y= 9x+28 and Y= 11x+22, you substitute the x-factor with '3'. Which will give you

Y= 9(3)+28         Y= 11(3)+22

Y= 27+28           Y= 33+22

Y= 55                 Y= 55

slava [35]3 years ago
4 0

Answer:C.4

Step-by-step explanation:

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What division problems equal 100
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200/2 cause it's half so it equals 100, hope i helped
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So I don't know what 5*7 is because it confusing
RideAnS [48]

Answer:

35/16

Explanation:

(5*7)/2^4

= 35/2^4

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Note:

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3 years ago
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In 1998, Cathy's age is equal to the sum of the four digits in the year of her birthday, then how old was Cathy in 1998?
ycow [4]

Answer:

<em>Cathy was born in 1980 and she was 18 years old in 1998</em>

Step-by-step explanation:

<u>Equations</u>

This is a special type of equations where all the unknowns must be integers and limited to a range [0,9] because they are the digits of a number.

Let's say Cathy was born in the year x formed by the ordered digits abcd. A number expressed by its digits can be calculated as

x=1000a+100b+10c+d

In 1998, Cathy's age was

1998-(1000a+100b+10c+d)

And it must be equal to the sum of the four digits

1998-(1000a+100b+10c+d)=a+b+c+d

Rearranging

1998=1001a+101b+11c+2d

We are sure a=1, b=9 because Cathy's age is limited to having been born in the same century and millennium. Thus

1998=1001+909+11c+2d

Operating

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If now we try some values for c we notice there is only one possible valid combination, since c and d must be integers in the range [0,9]

c=8, d=0

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5 0
3 years ago
Match each equation with the appropriate type of factoring.
Ugo [173]
I’m not sure what the answer is but I hope someone can help you
5 0
3 years ago
Consider the following three equations:
KengaRu [80]

Answer:

1.

y = 20(11) + 300 = 520

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hence the quadratic formula - y = 5x^2 has the largest y-value

2.

y = 20 (14) + 300 = 580

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14 is the smallest value of x for which the value of the exponential equation is greater than the values of both the linear and quadratic functions

Step-by-step explanation:

8 0
3 years ago
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