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Kazeer [188]
3 years ago
12

Paul and his friends average their test grades and find that the average is 95 the teacher announces that the average grade of a

ll her classes is 83 why are the average so different
Mathematics
1 answer:
AfilCa [17]3 years ago
3 0

Answer: The test scores are different because Paul and his friend only averaged his and his friends grades, while the teacher averaged the whole classes grades.

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Does the equation y = 2(x - 1) represent a linear function?
Eva8 [605]

Answer:

yes

Step-by-step explanation:

after you distribute you get:

y = 2x - 2

this is a linear function that crosses the y-axis at -2 and has a slope of 2

7 0
3 years ago
Solve the following quadratic by completing the square.
lianna [129]

Answer:

x  = -5 \pm  \sqrt{26}

Step-by-step explanation:

x^2+10x-1=0\\\\\implies x^2+2\cdot 5 x +5^2-5^2-1=0\\\\\implies (x+5)^2-25-1=0\\\\\implies (x+5)^2 -26=0\\\\\implies (x+5)^2 = 26\\\\\implies x +5 = \pm\sqrt{26}\\\\\implies x  = -5 \pm  \sqrt{26}

4 0
2 years ago
When one quarter of a number is subtracted from one third of the number, the result is 7
Rzqust [24]
The number ... n
one quarter of the number ... 1/4 of n = 1/4 * n
one third of the number ... 1/3 of n = 1/3 * n
one quarter of the number is subtracted from one third of the number ... 1/3 * n - 1/4 * n
the result is 7 ... = 7

We can put it together: 
1/3 * n - 1/4 * n = 7
4/12 * n - 3/12 * n = 7
1/12 * n = 7     /*12
n = 7 * 12
n = 84

The number you are looking for is 84.
5 0
3 years ago
Hey, Please help me :) if you help you might get 20 points?!?!?!?
cricket20 [7]
The volume of a rectangular prism = width x height x length so just plug 6 x 3.5 x 1.25 into a calculator and you'll get the answer
4 0
3 years ago
Read 2 more answers
Kim’s soccer team played in 33 games. They won 1 more than 15 times of the number of games they lost. Which system of equations
VARVARA [1.3K]
W = 1+15*l
(The number of games they won= 1+15* the number of games they lost.)
5 0
3 years ago
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