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Elena L [17]
3 years ago
11

Can someone please help me I need it quick please . Just need the answer please

Mathematics
1 answer:
Triss [41]3 years ago
8 0

Answer:

198 km

Step-by-step explanation:

81/9=9

9*22=198

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Karen has $600. She spent $240 on clothes. What percentage of money did she have left?
Rudiy27

Answer: She had 60% of the money left

Step-by-step explanation:

240/600=0.4

0.4 = 40%

100%-40%=60%

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2 years ago
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What is the largest angle of WXY?
marin [14]

Answer:

This is because the longest side in triangle WXY is side XY (15 units), therefore making the largest angle in that triangle, angle XWY, or angle W.

Step-by-step explanation:

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2 years ago
A chemistry teacher needs to mix a 20% salt solution with an 80% salt solution to make 20 qt of a 40% salt solution. How many qu
Svetlanka [38]

Answer:

  • 6 2/3 qt 80%
  • 13 1/3 qt 20%

Step-by-step explanation:

It is often convenient to solve a mixture problem by letting a variable represent the quantity of the higher-concentration contributor to the mix.

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We can let x represent the number of quarts of 80% solution needed. Then (20-x) is the number of quarts of 20% solution needed. The amount of salt in the final mix is ...

  0.80x +0.20(20-x) = 0.40(20)

  0.60x = 0.20(20) . . . . . . . . subtract 0.20(20) and simplify

  x = 20/3 = 6 2/3 . . . . . . . . . divide by 0.60; quarts of 80% solution

  (20 -x) = 13 1/3 . . . . . . . . . . amount of 20% solution needed

The teacher should mix 6 2/3 quarts of 80% solution with 13 1/3 quarts of 20% solution.

3 0
2 years ago
What are the domain and range of the function f(x) = 4? {x| x is a real number}; {y| y > 0} {x| x > 4}; {y| y > 0} {x|
Crazy boy [7]

Answer:

The domain is {x:x is a real number}

The range is {y:y is only 4}

Step-by-step explanation:

The domain of the function is the values of x

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Every point on the this line has different values of x but same value of y

ex: (-1 , 4)  , (5 , 4) , ( 0.1 , 4) , ................

So f(x) = 4 is called constant function

4 0
2 years ago
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Looking for the answer and explanation for this equation 7xy=? x=1 y=3
Dmitrij [34]
If you plug in the x and y, you get
7(1)(3)
7 x 1 x 3 = 21, so the answer is 21
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2 years ago
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