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olga55 [171]
3 years ago
14

Pls help will mark as brainliest

Mathematics
2 answers:
hram777 [196]3 years ago
4 0

Answer:

C  F

Step-by-step explanation:

Viefleur [7K]3 years ago
4 0

Answer:

2/10 is equivalent to 1:5

6:30 is equivalent to 1:5

8 to 40 is equivalent to 1:5

Step-by-step explanation:

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there are a total of 500 students in grades 1 through 5 in an elementary school. 17% of the total number of students are in 1st
Dmitry_Shevchenko [17]
17% of the total number of students are in 1st grade
→0.17×500=85 students in 1st grade
19% of the total number of students are in 4th grade
→0.19×500=95 students in 4th grade
<span>The number of 3rd-grade students is 9 less than the number of 4th-grade students.
→95-9=86 students in 3rd grade
</span><span>The number of 2nd-grade students is 10 less than the number of 5th-grade students.
1st grade+4th grade+3rd grade=85+95+86=266
500-266=234=total number of students in 2nd grade and 5th grade
Let x=2nd grade students
Let y=5th grade students
x+y=234
2nd grade students is 10 less than the number of 5th grade students
→x=y-10
Since x=y-10 so we substitute y-10 for x
→y-10+y=234
→2y-10=234
       +10  +10
→2y=244
→2y/2=244/2
→y=122 students in 5th grade
x+y=234
→x+122=234
→x=112 students in 2nd grade
ANSWERS:
1st: 85
2nd: 112
3rd: 86
4th: 95
5th: 122

</span>
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Rihanna planned a rectangular courtyard for a park and made a scale drawing using inches as the unit of measurement. She origina
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12.5% of $100 is<br> what number?
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