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agasfer [191]
3 years ago
11

I really need help please help if u could 9-11

Mathematics
2 answers:
Nuetrik [128]3 years ago
8 0
9) 35% of the 12,000 are 50-64 years old. 
12,000 x 0.35 = 4,200 

4,200 people were 50-64 years old

10) 25% of 596 people are over 64 years old
596 x 0.25 = 194

194 people were older than 64

11) yes, he is correct because 450 x 10%=45 and 450 x 30%=135 
lapo4ka [179]3 years ago
5 0
For #10
I did question 10 two times and came up with 149 not 194. check it. 596 X 0.25 equals 149
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2r^2+3s^3-r^2+4t^2-r^2 if r=-2, s=-3, and t=5
dimulka [17.4K]
2(-2)^2+3(-3)^3-(-2)^2+4(5)^2-(-2)^2 = 19

19 is the answer.
3 0
3 years ago
The cost to rent a rug-cleaning machine from the supermarket is $23 per day. The supermarket charges a check-out fee of $45 for
igomit [66]

Answer:

23d + 45 = 137

Explanation:

Since it is $23 per day, that dollar amount must be associated with a variable that multiples it per day that it is rented. Finally, you need to add the one time $45. This equation can then be used to find how many days it was rented for.

23d + 45 = 137

23d = 92 (Subtract 45 from both sides)

d = 4 (Divide by 23 on both sides)

The rug-cleaning machine was rented for 4 days. You found this using the equation: 23d + 45 = 137

8 0
3 years ago
Please show work.. 50 is 40% of what number?
Nana76 [90]
(50x100):40=125

answer:125
3 0
3 years ago
Pls help and don’t answer if you don’t know it! Thanks!
Citrus2011 [14]

Answer:

d) The stairs can be broken into 6 rectangle prisms. The dimensions of each solid figure are 0.576 m3.

e) 3.456 m3

Step-by-step explanation:

d) 1.2/3=0.4

1.8/3=0.6

0.4 x 0.6 x 2.4=0.576

e) 0.576 x 6= 3.456

6 0
2 years ago
PLZ HELP QUICK THIS IS URGENT
Nitella [24]

Answer:

question 2

1/x^15

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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