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Katyanochek1 [597]
3 years ago
13

An eye doctor charges an exam fee, plus a charge for the number of boxes of contact lenses purchased.

Mathematics
1 answer:
LiRa [457]3 years ago
5 0

Answer:

to get the exam fee

$112•97 ÷ 2

45•49

$272•93 ÷ 3

56•49

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Use the ratio table to solve the percent problem.
vodka [1.7K]

Answer:

20%

Step-by-step explanation:

8⁄40 = ⅕ = 20%

The Greatest Common Factor [GCF] is 8, both denominator and numerator by 8, to get ⅕, which is 20% [0,2 - twice to the right → 20% (attach the percentage symbol)].

I am joyous to assist you anytime.

6 0
4 years ago
Multiply (4a-2)(a+7)
kipiarov [429]

When multiplying binomials, one takes the first binomial and multiply each term by the first term of the second binomial, and then you do the same with the second term of the  second binomial, to obtain:

4a^2+14a-2a-14

4a^2+12a-14

6 0
3 years ago
5sinA=4, find the value of tanA.​
NARA [144]

Answer: tan A=4/3

Step-by-step explanation:

Theo đề ta có: 5sinA=4 suy ra: sinA=4/5, mà ta đã biết là: sinA= cạnh đối/cạnh huyền, suy ra: cạnh đối của góc A =4, cạnh huyền =5

Áp dụng định lí py ta go ta đc:

5^2=4^2+x^2

=) x=3

Vậy cạnh kề của góc A=3

Mà tanA = cạnh đối/cạnh kề

Vậy giá trị của tanA=4/3

(bạn vẽ hình ra thì có thể nhìn rõ hơn đấy, cảm ơn bạn đã tham khảo câu trả lời của mik)

7 0
3 years ago
Please help!! *graphs, median, modes, ranges, and means*<br> thank you!!
kipiarov [429]
<h2><u>Definitions/How to Find It</u></h2>

Mean - The average of all of the numbers. Add up all of the numbers then divide it by the total number of numbers.

Median - The middle number of them all. Put the numbers in order from least to greatest and find the one in the middle.

Mode - The number that appears the most.

Range - The difference between the highest and lowest numbers Subtract the lowest number from the highest number.

<h2><u>Answers</u></h2>

Mean = 56.6

Median = 53

Mode = 41, 43, 63

Range = 56

5 0
3 years ago
How to factor 15m^2-12m^3
tester [92]
Step 1. Find the Greatest Common Factor (GCF)
GCF = 3m^2
Step 2. Factor out the GCF <span>(Write the GCF first. Then, in parentheses, divide each term by the GCF.)
3m^2(15m^2/3m^2 + -12m^3/3m^2)
Step 3. Simplify each term in parentheses 
3m^2(5 - 4m)</span>
8 0
4 years ago
Read 2 more answers
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