Adele started her homework at 9:10. she finished at 9:45. how long did she spend on her homework?

Answers

Answer 1
Answer: 9:45-9:10=35 
she spent 35 minutes
Answer 2
Answer: She spent 35 minutes because 9:45 - 9:10 is 35.

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What is 20 + 20. please help me and fast thanks
I'm stuck please help me
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Show two ways to multiply 2/15 × 3/20. then tell which way is easier and justify your choice.

Answers

Well, 1 way is multiply the denominators like this 15×20=300. So use the 15 and multiply it with both of the numerators.

Someone plz explain!

Answers

Answer:

18° and 72°

Step-by-step explanation:

Complimentary angles form 90°

We have an angle (x) 4 times larger than the other (y).

Well actually, a system of equations isn't required, so forget about x and y, just divide 90 by 5. This gives you 18, one of the angle's measurements is 18°. Multiply 18 by 4 and get 72. The other angle's measurement is 72°.

Find the area of the figure

Answers

cut it up

1 trapezoid on top
2 paralellograms on bottom

area of trapezoid=1/2(b1+b2) times h
trapezoid bases are 17 and 7+7
height=8
area=1/2(17+14) times 8
area=124

area of 2 trapezoids
base=14
height=6
area=base times height
14*6=84
times 2 because we have 2 of them
168

add
124+168=292m^2

37,123,745 what the value of the 1

Answers

To find the value of 1, you would find what place it is in. It is in the 100,000 place.
Next, you would make all the numbers after it 0. 100,000.
The value of 1 is 100,000.
37,123,745 value of 1= hundred thousands= one hundred thousands: to make it easier do: ones,tens,hundred, thousand, ten thousands, hundred thousands, millions.

How is subtracting like fractions similar to adding like fractions

Answers

Because they both have the same rule. They have to have the same denominator.
Well,

Adding and subtracting like fractions are similar in that both cases simply require you to add the numerators.  This is opposed to adding and subtracting non-like fractions because you have to convert them into like fractions.

Lisa's recipe for 6 dozen cookies has 3/4 cup of butter and 1 1/2 cups of sugar. How much butter does she need to make only 3 dozen cookies?

Answers

Dozen = 12
6 Dozen = 12 * 6 = 72  <- Irrelevant but useful information

3 dozen is half of 6 dozen, so we just half the recipe!
3/4 cup of butter = 3/8 cups (doubling the denominator is the same as halving)
1 1/2 cups of sugar (3/2 cups) = 3/4 cups

She needs 3/8 cups of butter, and a 3/4 cup of sugar


Please give me brainliest answer if I helped! I need it for my next rank :D
This is basic alegbra, you set up a proportions equations with dozen of cookies over butter. 6/ 3/4 equals 3/x. You cross multiply, 6x equals 2 1/4. You divide 6 on both sides of the equation to isolate x, the variable. 2 1/4 divided by 6 equals 0.375. The answer is 0.375 cups of butter