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Nuetrik [128]
3 years ago
11

Evan spent 20 hours doing homework last week. This week he spent 25 hours doing homework. He says that he spent 125% more time d

oing homework this week. Is he correct? Show your work to justify your decision
Mathematics
1 answer:
pogonyaev3 years ago
7 0

Answer:

He isn't correct. He spent 25% more time this week than the previous one.

Step-by-step explanation:

We will make proportion.

first week 20 hours  is 100%

second week 25 hours is x%

20 : 25 = 100 : x

When we multiply external and internal members we get:

20x =25 · 100 =>  x = 2500/20 = 125%

We conclude the following:

Evan spent 125% of the time in hours compared to the last week or Evan spent 25% more time this week than the previous one.

God with you!!!


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Sets L, M, and N are shown. Which of the sets represents LU (M n N) (the union of L with the intersection of sets
irinina [24]

The sets represents L ∪ (M ∩ N) is {0 , 10 , 20 , 40 , 80 , 100} ⇒ 2nd answer

Step-by-step explanation:

In the sets:

  • Union (∪) of two sets means all the elements in the two sets without repeating the same elements
  • Intersection (∩) of two sets means the common elements in the two sets

∵ Set L = {0 , 20 , 40 , 80 , 100}

∵ Set M = {5 , 10 , 15 , 20 , 25}

∵ Set N = {10 , 20 , 30 , 40 , 50}

We need to find L ∪ (M ∩ N)

At first find (M ∩ N)

∵ M ∩ N means find the common elements of M and N

∵ 10 and 20 are common elements in M and N

∴ M ∩ N = {10 , 20}

Now find the union of L and {10 , 20}

∵ L ∪ {10 , 20} means all elements in L and {10 , 20} without

   repeating the same elements

∴ L ∪ {10 , 20} = {0 , 10 , 20 , 40 , 80 , 100}

∴ L ∪ (M ∩ N) = {0 , 10 , 20 , 40 , 80 , 100}

The sets represents L ∪ (M ∩ N) is {0 , 10 , 20 , 40 , 80 , 100}

Learn more:

You can learn more about the set in brainly.com/question/10710410

#LearnwithBrainly

4 0
4 years ago
Use the diagram that awnser the questions.
nadya68 [22]
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Find Slope for Line m:
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Two points on the graph: (-4. 3) and (0,-4)

\text  {Slope = }  \dfrac{3- (-4)}{-4 - 0}  = -\dfrac{7}{4}

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Find Slope for Line n:
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Two points on the graph: (1, 2) and (3, -2)

\text  {Slope = }  \dfrac{2 - (-2)}{1-3}  = -\dfrac{4}{2}  = -2

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Find Slope for Line k:
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Two points on the graph: ( -3 , -3) (4 , 1)

\text {Slope = } \dfrac{1 - (-3)}{4 - (-3)} = \dfrac{4}{7}

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Answer: Since M and N do not have the same slope, they are not parallel.
 
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3 0
4 years ago
What is the fraction twelve twentieth in its simplest form
xxTIMURxx [149]
You would write it out like this: 12/20. But yeah, it can be simplified by dividing 4 for 12 and 20. So it would be: 3/5. So 3/5 is the simplest form. 
5 0
3 years ago
. In the formula p = kt, find t when k = 36 and p = 144.
lisov135 [29]

Answer:

t = 4

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
Please I need help.
Vlad1618 [11]

Answer:

XZ = 26.7

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Area =  140.4 sq inches

Step-by-step explanation:

m∠Z = 180-(26+90) = 64°

to get XZ you can use the law of sines:

sin 90°/XZ = sin 64°/24

1/XZ = sin(64°)

cross-multiply to get:

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to get ZY you can use the law of sines again:

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cross-multiply to get:

ZY·sin(64°) = 24·sin(26°)

ZY = 24·sin(26°) ÷ sin(64°)

ZY = 11.7

Area = 1/2(11.7)(24)

= 12(11.7)

= 140.4 sq inches

6 0
3 years ago
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