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Zielflug [23.3K]
2 years ago
7

This week, Sarah spent a total of 120 minutes studying. This total was 20 more

Mathematics
1 answer:
MrMuchimi2 years ago
4 0

Answer:

She spent 25 minutes studying last week

Step-by-step explanation:

L = last week

120 = 4L + 20

Subtract 20 from either side

100 = 4L

Divde either side by 4

25 = L

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I dont understand please help
DiKsa [7]

2 \frac{1}{2}+(-2\frac{1}{4})

This is equal to:

2\frac{1}{2}-2\frac{1}{4}

When you add a negative number, it turns into subtraction.

First, I would change it to mixed numbers:

\frac{5}{2}-\frac{9}{4}

Now, you need to change the denominators to make sure they are the same on both fractions. I changed the first fraction's denominator to 4 so they match. You can do this by multiplying the numerator by 2:

\frac{10}{4}-\frac{9}{4}

Now, you simply subtract:

10-9=1

1/4 is your answer.

I hope this helps :)

3 0
2 years ago
Ann increased the quantities of all the ingredients in a recipe by 60%, percent. She used 80 grams , of cheese. How much cheese
VladimirAG [237]

Answer:

The recipe originally required 50 grams of cheese.

Step-by-step explanation:

1.6x=80

x=50

3 0
2 years ago
What is the explicit formula for this sequence?
o-na [289]
The answer is a
i hope this helps
8 0
3 years ago
Read 2 more answers
Who whats to talk <br> im here<br> .0.
Vsevolod [243]

Answer:

:( :( :(

Step-by-step explanation:

8 0
1 year ago
Read 2 more answers
After losing 3 baseball cards, Peter gave half of his remaining cards to Bobby. If Peter gave Bobby 9 baseball cards, how many c
seropon [69]
If Bobby claims Peter started with 21 cards, then we'll work this into our equation.

21 - 3 (that he lost) = 18
18 / 2 (the half he gave) = 9

So this means that he did have 21 cards to begin with. Please reply to this with a list of the answers that can/could be checked!
6 0
2 years ago
Read 2 more answers
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