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Serjik [45]
3 years ago
12

Mark owes his sister $15. He earned $20. He gave 1/5 of his earnings to a local charity and then he paid his sister. Does Mark h

ave enough to repay his sister the full amount? Why or why not?
Mathematics
2 answers:
ehidna [41]3 years ago
7 0

Answer:

Yes, Mark has $16 left and only has to pay his sister $15.

Step-by-step explanation:

1/5=x/20

use cross multiplication to find (x),which represents 20% of 20.

x/20=1/5 (cross multiply)

20=5x (divide by 5 on both sides)

x=4

This tells you that Mark gave $4 to the local charity.

20-4=16

Subtracting 4 from his original amount, he now has $16 left.

irina [24]3 years ago
3 0

Answer: yes

Step-by-step explanation:

Mark gave 1/5 of 20 = $4 to local charity. He has $16 left. He paid his sister $15. He still has $16 - $15 =$1 left

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Which choice is equivalent shown here x less than 0?

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2 years ago
There are 20 classrooms in the high school with 30 students in each class. How many students are in the school?​
Sophie [7]
<h2>Required Answer:</h2>

\Large{\boxed{\tt{600 \:  Students}}}

<h2 /><h2>Question:</h2>

  • There are 20 classrooms in the high school with 30 students in each class. How many students are in the school?
<h2>To find:</h2>
  • No. of students
<h2>Given:</h2>
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<h2>Answer:</h2>
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8 0
3 years ago
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Please help. I need it. Bad.
Murljashka [212]

Answer:

Option a.

Step-by-step explanation:

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Opposite side of right angle is hypotenuse. So, CB is hypotenuse.

From figure it is clear that CA is shorter that segment BA.

All angles are congruent to itself. So angle C is congruent to itself.

We know that, if an altitude is drawn from the right angle vertex in a right angle triangle it divide the triangle in two right angle triangles, then given triangle is similar to both new triangles.

So, triangle ABC is similar to triangle DBA if segment AD is an altitude of triangle ABC.

Therefore, the correct option is a.

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3 years ago
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