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Blizzard [7]
2 years ago
11

Average after 8 test is 91%. if he gets a 78% on his 9th test what will be the new acerage

Mathematics
1 answer:
Vika [28.1K]2 years ago
6 0
All you need to do is add te averages together then divide them by 2. 91%+78%=169% 169%÷2=84.5% So the new test average is 84.5%
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write and equation of the line parallel to the line  2 x + 4 y = 20 2 x + 4 y = 20 and containing the point  ( −
MAXImum [283]

Answer:

Step-by-step explanation:

The equation of a straight line can be represented in the slope intercept form as

y = mx + c

Where

m represents the slope of the line

c represents the y intercept

The equation of the given line is

2x + 4y = 20

4y = - 2x + 20

Dividing through by 4, it becomes

y = - x/2 + 5

Comparing with the slope intercept form, slope = - 1/2

If two lines are parallel, it means that they have the same slope. Therefore, the slope of the line passing through (- 6, 3) is - 1/2

To determine the y intercept, we would substitute m = - 1/2, x = - 6 and y = 3 into y = mx + c. It becomes

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2 years ago
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lianna [129]
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8 0
3 years ago
Doreen lives 3/4 mile from the library. Sheila lives 1/3 AS FAR AWAY FROM THE LIBRARY AS DOREEN.
alexdok [17]
What's the question that needs to be solved and I will help?
3 0
3 years ago
Question no. 6, can anyone help?
monitta
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2 years ago
The lengths of all sides of a triangle are integers when measured in decimeters. One of the sides has length of 1 dm and another
hram777 [196]

Answer:

The perimeter is 7 dm

Step-by-step explanation:

we know that

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Let

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case a)

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case b)

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4 > c

rewrite

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therefore

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The perimeter is equal to

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7 0
3 years ago
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