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Mila [183]
2 years ago
11

A student has gotten the following grades on his tests. What is the minimum grade he must get on the last test in order to have

an average of 787
83, 81, 70, 74
The minimum grade he must get on the last test in order to have an average of 78 is
Mathematics
2 answers:
Dahasolnce [82]2 years ago
6 0

Answer:

82

Step-by-step explanation:

The sum of his previous grades were 308. In order to get an average grade of 78, he needs to have a score of 78*5 or 390. His necessary grade minus his current grade is 390 - 308, which is 82. The minimum score the student needs to get on his test in order to have an average of 78 is 82

Maksim231197 [3]2 years ago
3 0

Answer:

82.

Step-by-step explanation:

The sum of the 5 tests must be 5*78 = 390 for the average to be 78.

So in the last test is grade must be 390 - (83+81+70+74)

= 390 - 308 = 82.

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Step-by-step explanation:


8 0
3 years ago
What is the center and radius of a circle whose equation is x2 + y2 -2x -6y -5 = 0?
ddd [48]

x²+y²-2x-6y-5=0

x²-2x+y²-6y=5

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(x-1)²+(y-3)²=15

(x-1)²+(y-3)²=(V15)²

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4 0
2 years ago
3) "The difference between twice a number and 17 is no more than 13."*
stellarik [79]

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c<15

Step-by-step explanation:

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7 0
3 years ago
Jack has six less than five times the number of baseball cards that Mark has. if Mark has 10 baseball cards, how many baseball c
ASHA 777 [7]

Answer:

44

Step-by-step explanation-

Jack has 6 less than 5 times what mark has, if we write it out, we have (5*mark)-6. We know that mark has 10, so if we replace it we have

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6 0
3 years ago
Can someone help me figure out the answer?
olga_2 [115]

Answer:

y = -2x +15

Step-by-step explanation:

The point-slope form of the equation for a line through (h, k) with slope m is ...

... y - k = m(x - h)

For your point (h, k) = (5, 5) and slope m = -2, the equation in point-slope form is ...

... y - 5 = -2(x - 5)

Simplifying, we get

... y - 5 = -2x +10

Adding 5 puts the equation into slope-intercept form, as you want.

... y = -2x +15

8 0
3 years ago
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