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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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Can someone please respond to me and help me out with these 4 problems I must show my work and include an expression , evaluatio
AlladinOne [14]

Answer: A train traveled486 miles in 7 hours

They would be going at least 40 - 70

Step-by-step explanation:

4 0
3 years ago
The diameter of the wheels on your car is 25 inches. You are going to drive 458 miles today. Each of your wheels is going to tur
Kipish [7]

d = Diameter of wheels = 25 inches

s = Distance to be traveled by the wheels = 458 miles

Converting the miles to inches

s=458\times 5280\times 12=29018880\ \text{inches}

The distance traveled by the wheels in rotation is the circumference

D=\pi d\\\Rightarrow D=\pi\times 25

The number of rotations required to cover the distance would be

\dfrac{s}{D}\\ =\dfrac{29018880}{\pi\times 25}\\ =369479.855599

1 rotation is 360^{\circ} so

369479.855599\times 360=133012748.016^{\circ}

The number of rotations to cover the required distance is 133012748.016^{\circ}

Learn more:

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4 0
2 years ago
The polygons below are similar... please help I will mark you brainliest thank youuuu
antiseptic1488 [7]

Answer:

y=27 and x=9

Step-by-step explanation:

the ratio is 4 to 3

3 0
3 years ago
What is the slope of a trend line that passes through the points (5, 80) and (7, 65)?
Vlad [161]

Answer:

-15/2 or -7.5 or -7½

Negative StartFraction 15 Over 2 EndFraction

Step-by-step explanation:

Slope or gradient of a line is the ratio of change in y co-ordinates to the change in x co-ordinates.

Therefore;

M=∆y÷∆x

The change in y co-ordinates is given by

∆y=y2-y1

Similarly, change in x co-ordinates is given by

∆x=x2-x1

Given the two points as (5, 80) and (7, 65)

X1=5 Y1=80

X2=7 Y2=65

∆y=65-80=-15

∆x=7-5=2

Hence ∆y÷∆x will be -15÷2=-7.5 or -7½

Negative StartFraction 15 Over 2 EndFraction

4 0
3 years ago
Read 2 more answers
Find the measure of the missing angles.
Verdich [7]

Answer:

x = 57                y = 137

Step-by-step explanation:

x + 43 + 90 = 180

x + 43 + 90 - 90 = 180 - 90

x + 43 = 90

x + 43 - 43 = 90 - 43

x = 57

43 + y = 180

43 + y - 43 = 180 - 43

y = 137

6 0
2 years ago
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