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aleksklad [387]
3 years ago
9

In a school, 50% of students are younger of students younger than 10, 1/2 are 10 years old and 1/10 are older than 10 but younge

r than 12, the remaining of students are 12 years or older. How many students are 10 years old?
Mathematics
1 answer:
Stels [109]3 years ago
8 0

Answer:

jddossjienrufhddddhdudjdj

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Question listed below.​
matrenka [14]

Answer:

I think its 14 students

Step-by-step explanation:

40%x35=14

7 0
3 years ago
Read 2 more answers
Given (21,7) and (x,<br> 1), find all x such that the distance between these two points is 17.
Dmitriy789 [7]

Answer:

21+/-sqrt(253)=x

So one value for x is 21+sqrt(253)

and another is 21-sqrt(253)

Problem:

Given (21,7) and (x,1), find all x such that the distance between these two points is 17.

Step-by-step explanation:

Change in x is x-21

Change in y is 7-1=6

distance^2=(change in x)^2+(change in y)^2

17^2=(x-21)^2+(6)^2

289=(x-21)^2+36

Subtract 36 on both sides:

289-36=(x-21)^2

253=(x-21)^2

Take square root of both sides:

+/-sqrt(253)=x-21

Add 21 on both sides:

21+/-sqrt(253)=x

6 0
3 years ago
If s(x) = x-7 and f(x) = 4x? – X+3, which expression is equivalent to (tos)(x)?
lesya692 [45]

Answer:

4(x-7)^2-(x-7)+3 (Assuming t is f)

Step-by-step explanation:

Let s(x)=x-7 and t(x)=4x^2-x+3 .

(t o s)(x)=t(s(x))=t(x-7)

Before I continue this means replace the orginal x in t with x-7.

This will then give you

4(x-7)^2-(x-7)+3

4 0
3 years ago
Three percent converted to a decimal
Ymorist [56]
The answer is 0.03. Hope I help:)
5 0
3 years ago
Read 2 more answers
15 points! Thank you
Pepsi [2]

10x^2+27x-28=10x^2+35x-8x-28=5x(2x+7)-4(2x+7)\\\\=(2x+7)(5x-4)\\\\Answer:\ D.\ 2x+7

5 0
3 years ago
Read 2 more answers
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