Janelle earned 90% on a test and got 63 points. How many total points were possible on the test?

Answers

Answer 1

Answer: Ask yourself...

63 is 90% of what number?

Convert to math terms:
is --> =
of --> *
what number --> x

And remember that 90% as a decimal is 0.9

===========

63 = 0.9x
x = 70

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the first four terms of an arithmetic sequence are 2,a-b, 2a+b+7 and a - 3b, where a and b are constants. Find a and b
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In the number 157,562, the on is in the _____ place.

Answers

in the number 157,562, the one is in the hundred-thousand place.

Direct Linear Variation, anyone?

Answers

All answers are correct

Similar situation as you have before, let's starts from the easiest one which is D

2y = x

solve for y and you have y =x/2 which will show you on graph straight line

3/4y = 6x

multiply by 4/3
y = [(6*4)/3]x
y=(24/3)x
y=8x

also straight line :)

y=2/5x-2/5 is same as y=0.4x-0.4 also will result as straight line graph :)

It would be nice if I get some help with these 2 thingsThing 1.
A. EXPLAIN how to set up a proportion and then

B. solve the problem below.

A recipe calls for 9 tablespoons of milk for every 21 cups of flour. If the chef puts in 168 cups of flour, how many tablespoons of milk must the chef add?

thing 2.
solve the proportion 24/36 = 8/y

Answers

Thing 1
A. You can set up a proportion by dividing how much of something there is by the original. (This probably doesn't make much sense but I hope you can understand it from the answer to the problem below!)
B.First, do 168/21 to see how many more times he put flour in.
168/21= 8
Then to find out the milk in the same proportion do the number (in this case 8) times the original of the thing you wan to find out.
8x9=72
72 tablespoons of milk are needed for 168 cups of flour in this adapted recipe.

Thing 2
24/36=8y
To solve any equation, you want to have letters on one side and numbers on the other, so...
-8 from both sides...
(24/36)-8=y
24/36=0.6
y=(0.6-8)
y=-7.4

Hope this helps :)

The school store sells 4 pencils for 50 cents. At that rate, what would be the cost of 10 pencils?

Answers

1.25 because at 8 pencils its 1 dollar then adding two more will be 25 cents

Nova was flying a drone that she got for her birthday. Nova is 36 yards lower than the drone. The distance from Nova to the drone is 200 yards. What is the angle of elevation?

Answers

For the right triangle NDO (look at the image) $\sin \angle OND= (OD)/(ND) = (36)/(200) = (9)/(50)$ .
Then $\angle OND=\sin^(-1) (9)/(50)$ .

7000 divided by ten squared

Answers

Answer:

70:) i think that’s the right answer.

Step-by-step explanation:

7000/10=700.
Answer 700

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