Krista can type 60 words per minute.She wrote an essay by hand in 5 hours, and it is now 4 pages long and has 500 words in it. She wants to type up her essay. About how long will it take to type her essay? What is the extra or missing information

Answers

Answer 1

Answer: 12 is the answer becuse 12 times what equal 60

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Mrs.jones bought three 2-kilogram packages of flour. How many grams of flour did she buy

Answers

so if 1 kilogram = 1000 grams then 2 kilograms = 2000 grams

Sue answered 80% of 150 test questions correctly. How many questions did she not answered correctly?

Answers

.2 × 150 = 30 questions

150×80% (.80)=120 150-120=30 questions incorrectly

PLEASE DON'T SKIP

Solve the system of equations.

Answers

      2x + 3y = 1

      y = 3x + 15

There's not much you can do with the first equation, because it has
two variables in it ... 'x' and 'y' . No matter how much you move them
around, you'll never be able to get either one equal to just a number.
Is there any way you could get rid of one of the variables in the first
equation, and have just 1 letter in it to solve for ?

Absolutely ! The second equation tells you something that 'y' is equal to,
(3x + 15). "EQUAL" is very powerful. It means that wherever you see 'y',
you can put (3x + 15) in its place, and you won't change anything or
upset anything. One thing you can do is take that (3x + 15) from the
2nd equation, and put it right into the first equation in place of 'y'.
You'll see how that helps as soon as you do it.

   First equation: 2x + 3y = 1

   Substitute for 'y' : 2x + 3(3x + 15) = 1

Remove parentheses: 2x + 3(3x) + 3(15) = 1
      2x + 9x + 45 = 1

Combine the terms with 'x' in them: 11x + 45 = 1

Look what you have now ! An equation with only one variable in it !

Subtract 45 from each side: 11x = -44

Divide each side by 11 : x = -4

You're more than halfway there. Now you know what 'x' is,
and you can use it with either equation to find what 'y' is.

-- If you use it with the first equation: 2x + 3y = 1

   Put in the value of 'x': 2(-4) + 3y = 1

Remove the parentheses: -8 + 3y = 1

Add 8 to each side:    3y = 9

    Divide each side by 3 : y = 3

-- If you use it with the 2nd equation: y = 3x + 15

      Put in the value of 'x' :     y = 3(-4) + 15

   Remove the parentheses: y = -12 + 15

Add numbers on the right side:   y = 3 (same as the other way)

So there's your solution for the system of two equations:

   x = -4
   y = 3

Giving brainliest and 34 points. PLEASE ANSWER THIS USING A TABLE AND SHOW ALL STEPS PLEASE!#2 : In three years, Bob will be twice as old as Karen. Two years ago, Bob was three times as old as Karen. How old is Karen now?

#3 :Five years ago, Amy was six years younger than twice Sarah's age. In 4 years, the sum of their ages will be 45 years. How old will amy be in 10 years?

Answers

Answer:

#2 Karen is 7 years old

#3 Amy will be 31 years old in 10 years

Step-by-step explanation:

2#:

b+3=2(k+3)
b-2=3(k-2)
2b+1=5k
2b-5k=-1
b-2k=3
2b-4k=6
2b-4k-(2b-5k)=6-(-1)
k=7

3#:

a+1=2(s-5)
a+s+8=45
a-2s=-11
a=37-s
37-3s=-11
-3s=-48
s=16
a=37-16
a=21
21+10=31

Find the mean of this data set: 20, 42, 45, 60, 65, 66, 76mean: the sum of all the numbers divided by the numbers in a set

Thank you all in advance!!!