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DerKrebs [107]
3 years ago
6

A teacher changed to grading from 50 points + 5 for each correct answer to 50 points + 7 for each correct answer. What would cha

nge: the slope. The y intercept, both the slope and the y intercept or nothing
Mathematics
1 answer:
shepuryov [24]3 years ago
6 0

Answer:

The slope

Step-by-step explanation:

Given that:

Initial grading ; For each correct answer : 50 points + 5

New grading ; For each correct answer = 50 + 7 points

The reading coukd be expressed in slope intercept form of an equation as :

Initial grading :

y = 50 + 5x

New grading :

y = 50 + 7x

y = total score ; x = number of correct answers

The change in y per unit change in x which is the slope, is the only difference in the two equations, the intercept (50) stays the same.

Therefore, only the slope changes.

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the population of a colony grows from 250 in the year 2000 to 400 in the year 2004. what is the average rate of change of popula
Ilia_Sergeevich [38]

Given:

Population of a colony in 2000 = 250

Population of a colony in 2004 = 400

To find:

The average rate of change.

Solution:

Let y be the population of the colony at x year.

The population of a colony grows from 250 in the year 2000 to 400 in the year 2004.  So, the two points are (2000,250) and (2004,400).

Formula for slope or average rate of change is

m=\dfrac{y_2-y_1}{x_2-x_1}

m=\dfrac{400-250}{2004-2000}

m=\dfrac{150}{4}

m=37.5

Therefore, the  average rate of change of population is 37.5.

3 0
2 years ago
-200p^2+12028p=180096
bekas [8.4K]

Answer:

Step-by-step explanation:

200 p²-12028p+180096=0

50 p-3007 p +45024=0

p=\frac{3007 \pm\sqrt{(-3007)^2-4*50*45024} }{2*50} \\=\frac{3007 \pm \sqrt{9042049-9004800} }{100} \\=\frac{3007 \pm \sqrt{37249} }{100} \\=\frac{ 3007 \pm193}{100} \\p=32,28.14

4 0
2 years ago
46 is the sum of 9 and Hector's savings. Use the variable h to represent Hector's savings
AURORKA [14]
H+9=46
it would be a decimal
7 0
3 years ago
SIMPLIFY the expression
Burka [1]
The answer to your question is 7
4 0
3 years ago
Read 2 more answers
Theresa is planning on making a fleece blanket for her nephew. She learns that the fabric she wants to use is $7.99 per yard. Fi
Anastaziya [24]

Answer:

$31.96

Step-by-step explanation:

(7.99)×(4)= $31.96

7 0
3 years ago
Read 2 more answers
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