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poizon [28]
3 years ago
10

I need help with this question please, if anyone would be kind enough to give me the correct answer, in return I would gladly r

ate a 5 star and give brainliest (:

Mathematics
1 answer:
belka [17]3 years ago
5 0
-4(3n + 5) is the answer
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Ricky can ride 17 km on his bike in the same length of time ha can walk 9 km.if his riding speed is 4 kph faster than his walkin
aivan3 [116]
Distance=speed times time
if they take the same time, we cal the time , t

b=bike speed
w=walking speed

bikedistnace=17=bt
walkdistance=9=wt

b is 4 more than w
b=4+w

we have
17=bt
9=wt
b=4w

ok so
multiply first equation by 9 and 2nd by 17

153=9bt
153=17wt
set equal
9bt=17wt
divide both sides by t
9b=17w
sub b=4+w for b
9(4+w)=17w
distribute
36+9w=17w
minus 9w both sides
36=8w
divide both sides by 8
4.5=w

he walks 4.5kph
5 0
3 years ago
Please do these thank you!!!!!!!!ASAP this is 7th grade math
yan [13]
1. 4,821 inches
2. Sorry couldn't solve it.
3. Height is 23.5 inches
4. The package can be shipped at special rate.
5 0
2 years ago
Which equation can be used to find the volume of the cylinder?
Anarel [89]

Answer:

V = πr²h

Step-by-step explanation:

Volume = π(radius)² * height

3 0
2 years ago
Read 2 more answers
Suppose a normal distribution has a mean of 62 and a standard deviation of4. What is the probability that a data value is betwee
saw5 [17]

SOLUTION

From the given data the mean is 62 and standard deviation is 4

It is required to find the probability that a data value is between 57 and 62

That is:

P(57\lt x\lt65)

The z scores is calculated using:

z=\frac{x-\mu}{\sigma}

Using the x values it follows:

z=\frac{57-62}{4}=-1.25

Also,

z=\frac{65-62}{4}=0.75

Thus the required probability is:

P(-1.25The proability is:[tex]P(-1.25This can be expressed as percentage as:[tex]P(-1.25\lt z\lt0.75)=66.8\%

Therefore the correct option is C

8 0
1 year ago
I really need help with 23 through 30
BartSMP [9]

23. 120

24. 62

25. 84

26. 64

27. 121

28. 112

29. 65

30. 78

Brainiest answer please

4 0
3 years ago
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