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Fittoniya [83]
3 years ago
12

Ashley’s math average decreased 12 points to 78. Then she completed an extra credit assignment and raised her final average by 5

points. Write an equation to show how Ashley’s average changed.
What was her starting average?
points

How much did her average increase or decrease, overall?
points

What was her final average?


points
Mathematics
1 answer:
sergey [27]3 years ago
7 0

Answer:

1. 90

2. -12 +5

3. 83

Step-by-step explanation:

90 -12 + 5 = 83

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Find the value of each variable. Assume it is a 45 45 90 triangle. Round to the nearest tenth.
Arte-miy333 [17]

Answer:

x = 6

y = 45 degrees

Step-by-step explanation:

Here, we want to get the measure of x and y

For a 45-45-90 triangle, the measure of each of the internal angle asides the right angle is 45 degrees

This mean y is 45

To get x, we know we have an isosceles triangle

So the length of the third ungiven leg is x too

Mathematically, the square of the hypotenuse (side facing the right angle) is equal the sum of the squares of the two other sides

(6 √2)^2 = x^2 + x^2

72 = 2x^2

x^2 = 72/2

x^2 = 36

x = √36

x = 6

4 0
3 years ago
Solve the 2-step equation: -3/4+8=-7
TiliK225 [7]

Answer: there is no awnser

Step-by-step explanation: because u can’t divide 7.25 and 7

7 0
3 years ago
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3 years ago
Martha bought a 0.45​-kilogram bottle of spice. She uses 60 grams a week. Is one bottle of spice enough for 9 ​weeks? Explain.
mash [69]

Answer: No.

Step-by-step explanation:

The reason why it is not enough is that 0.45 kilograms is 450 grams, and when you divided 450 by 9, you get 50, which is 10 less than 60. Therefore, 1 bottle of spice is not enough for 9 weeks.

7 0
3 years ago
Read 2 more answers
The difference between two numbers is 9<br>Find these numbers if their sum is 45.​
kirill115 [55]

Answer:

spoe that x and y are the two numbers. Then we have x-y=9 and x+y=45. By adding the two equations together we obtain 2x=54 and so x=27. This implies that y=45-27=18.

6 0
3 years ago
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