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Sladkaya [172]
2 years ago
5

What is the equation of the line that is perpendicular to line a and passes through (2,7).

Mathematics
1 answer:
Aleonysh [2.5K]2 years ago
7 0

Answer:

y = x + 5

Step-by-step explanation:

Slope = - 1

Slope of the perpendicular line = 1

Point (2,7)

(b) y-intercept= 7 - (1)(2)

= 5

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the formula

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13+(3+7)=(13+3)+7 what property is that​
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Step-by-step explanation:

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Which of the following expressions is not equivalent to <br> 2(b+​8)?
maksim [4K]

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3 years ago
Noelle and Micah went to the bank to open new checking accounts. The equation C=0.2n+1.20 represents the monthly cost, C, in dol
Kaylis [27]

Answer:

C = $2.40

n = 6

Step-by-step explanation:

For Noelle,

Equation that represents the monthly cost 'C',

C = 0.2n + 1.20

Here, n = number of checks written in a month

For Micah,

Monthly cost for writing checks 'C' = $1.20

Number of checks 'n' = 3

Since, Cost of writing checks ∝ Number of checks written

C' ∝ n

C' = kn

k = \frac{C'}{n}

Here, k = proportionality constant

For C' = 1.2 and n = 3

k = \frac{1.2}{3}

k = 0.4

Equation will be,

C' = 0.4n

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0.4n - 0.2n = 1.20

0.2n = 1.20

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For n = 6,

C = 0.2(6) + 1.20

C = $2.40

Cost of writing checks = $2.40

7 0
3 years ago
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