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Advocard [28]
2 years ago
9

A line that include the point (0,2) has a slope is -1/7 what is its equation in slope-intercept form?

Mathematics
1 answer:
Kitty [74]2 years ago
8 0

Answer:

y = -(1/7)x+2

Step-by-step explanation:

A slope-intercept form is y = mx + b, where m is the slope and b the y-intercept (the value of y when x=0).

We're given the slope:  m = -(1/7):

y = -(1/7)x + b

We can use the given point, (0,2) in this equation and solve for b:

y = -(1/7)x + b

2 = -(1/7)*(0) + b

b = 2

The equation becomes y = -(1/7)x + 0

y = -(1/7)x+2

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I need help please!!! My teacher doesn't teacher and she has asked us to do a problem I don't know how to do it. Can somebody ex
ra1l [238]

Using exponential functions, it is found that:

a) Since the <u>amount of caffeine will be less than 50 mg</u>, the patient will be ready for the blood test by 6 a.m.

b) The patient could have ingest 231 milligrams of caffeine.

A decaying <em>exponential function</em> is modeled by:

A(t) = A(0)(1 - r)^t

In which:

  • A(0) is the initial value.
  • r is the decay rate, as a decimal.

In this problem:

  • Caffeine metabolize at a rate of 13% per hour, hence r = 0.13.

Then:

A(t) = A(0)(1 - r)^t

A(t) = A(0)(1 - 0.13)^t

A(t) = A(0)(0.87)^t

Item a:

The coffee cup contains 150 milligrams of caffeine, hence A(0) = 150.

At 6 a.m., it is 8 hours after drinking the coffee, hence we have to find A(8).

A(t) = A(0)(0.87)^t

A(8) = 150(0.87)^8

A(8) = 49.2

Since the <u>amount of caffeine will be less than 50 mg</u>, the patient will be ready for the blood test by 6 a.m.

Item b:

This A(0), considering <u>A(11) = 50</u>, hence:

50 = A(0)(0.87)^{11}

A(0) = \frac{50}{(0.87)^{11}}

A(0) = 231

The patient could have ingest 231 milligrams of caffeine.

A similar problem is given at brainly.com/question/25537936

3 0
2 years ago
Maritza is comparing cell phones plans and notices that verizon offers a plan that is $60 for 10GB of data and $12 for each extr
lukranit [14]

Answer:

60 + 12 * g, with g representing the number of extra gigabytes

Step-by-step explanation:

First, we know that Maritza has to pay $60 for 10GB of data, no matter what. Therefore, the base cost of the cell phone plan is 60 dollars, and all extra costs must be added to that. Currently, our expression is therefore 60 + something = cost of cell phone plan.

After that, the plan costs $12 for each gigabyte of data past 10 GB. This means that, for example, if Maritza uses 11 gigabytes, the plan will cost 60 (the base amount) + 12 for each gigabyte past 10 GB. There are 11-10=1 extra gigabytes, so the cost is 60 + 12 * 1 = 72 dollars. For each extra gigabyte, 12 dollars are added, so we can represent this as

60 + 12 * g, with g representing the number of extra gigabytes

8 0
3 years ago
What is the y intercept of the graph of 4x + 2y = 12
yan [13]

Answer:

the y intercept is 6

Step-by-step explanation:

Step 1: Add -4x to both sides.

4x+2y+−4x=12+−4x

2y=−4x+12

Step 2: Divide both sides by 2.

2y /2  = −4x+12 /2

y=−2x+6

Points (3,6)

x intercept is 3 and y intercept is 6

4 0
3 years ago
View screenshot below (please help)
lukranit [14]
I believe x=16 is the answer.
5 0
3 years ago
brenda's dad measures her height to be 61 1/8 inches. six months later, he measures her height again. he says she has grown 3 1/
Monica [59]

Answer:

9 3/16

Step-by-step explanation:

to add fractions make sure they have a common denominator

3 0
3 years ago
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