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enyata [817]
3 years ago
5

Use the equation of the water level of the river represented by the equation y=-4x + 170, where x represents the

Mathematics
2 answers:
vovangra [49]3 years ago
4 0

Answer:

(0,170)  and (60,-70) and (5, 150)

Step-by-step explanation:

To see if a given point is on the line or not, you just have to enter the x value (first value in the parenthesis) and see if the function returns the correct y value (second number in the parenthesis).

f(x) = -4x + 170

(170,0)  => -4 (170) + 170 = -680 + 170 = 510.  NO, not equal to 0.

(0,170) =>  -4 (0) + 170 = 0 + 170 = 170. YES

(12, 126)  => -4 (12) + 170= -48 + 170= 122. No, not equal to 126.

(50,30)  => -4(50) + 170 = -200 + 170 = 130. No, not equal to 30.

(5, 150)  => -4(5) + 170 = -20 + 170 = 150. YES

(60,-70) => -4(60) + 170 = -240 + 170 = -70.  YES

Vedmedyk [2.9K]3 years ago
3 0

Answer:

(0,170)  and (60,-70) and (5, 150)

Step-by-step explanation:

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How to convert 2500mcg to mg
Volgvan

Answer:2500mcg would be 2.5mg

Step-by-step explanation:

1000mcg = 1mg so 2500mcg = 2.5mg

6 0
3 years ago
At the beginning of an environmental study, a forest covered an area of 1500km^2. Since then, the area has decreased by 6.3% eac
geniusboy [140]

The <em><u>correct answer</u></em> is:

y=1500(0.937)^t

Explanation:

An exponential function is of the form

y=a\times b^x, where a is the initial population, b is 1 plus the amount of yearly change, and x is the number of years.

For our problem, a, the initial population, is 1500.

The yearly change is 6.3%; 6.3% = 6.3/100 = 0.063.  Since it is decreasing, this is negative; 1+(-0.063) = 0.937.

We use t as the number of years.

This gives us

y=1500(0.937)^t

3 0
3 years ago
ANSWER 3-8 FOR BRAINLIESET ANSWER AND ALL POINTS!!!! ALL INCOMPLETE/WRONG ANSWERS WILL BE REPORTED URGENT HELP REQUIRED.
Verdich [7]
3. The correct answer is option A (10 in)

4. The correct answer is option C (5 in)

5. Cannot see this question.

6. The correct answer is option B (17.5 ft)

7. The correct answer is option A (5)

8. The correct answer is option A (3.375)

Hope this helped. Have a great day!
4 0
3 years ago
marco and suzi each mulyiplied 0.721 X 100 Marco got 7.21 for his product suiz got 72.1 for her product which student multiplied
Marianna [84]
Size got it right because it’s multiplied by 100
5 0
3 years ago
Is an estimate for the percent of a number always,sometimes or never greater than actual percent of the number
posledela
It would be sometimes because it can be 82.2% but if you round it the closest one would be 80% if it was 84.7% its closer to 85 so it would be 85% I hope I helped you out rate the answer if I got it right thanks!
3 0
3 years ago
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