3 years ago

Help number 21 plzzz

Mathematics

1 answer:

PtichkaEL [24]3 years ago

8 0

Answer:

B. C

Step-by-step explanation:

thats what I think it is

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If 200 kids went to the zoo and only 10 came back how many got lost?

kodGreya [7K]

Answer:

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so, 190 kids came back..

Step-by-step explanation:

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3 years ago

Read 2 more answers

Jan walks 2 miles at a constant rate of 3 miles per hour and then runs 1 mile at a constant rate of 8 miles per hour.

stealth61 [152]

Answer:

(a).4.36 mph

(b) No

Step-by-step explanation:

We are given that

Jan covered distance,s1 =2 miles

Speed of Jan, a=3 mph

s2=1 mile

b=8mph

We have to find the Jan' s average speed for the entire trip.

Average speed = $\frac{2ab}{a+b}$

Using the formula

Average speed= $\frac{2(3)(8)}{3+8}=4.36mph$

Average speed with two speed

Average of Jan’s two speeds

$=\frac{a+b}{2}$

= $\frac{3+8}{2}=5.5 mph$

$4.36\neq 5.5$

Hence, the average speed in part (a) is not equal to the average of Jan’s two speeds.

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3 years ago

I need to give the proof of the shape that is on the picture

Evgesh-ka [11]

Answer:

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Step-by-step explanation:

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3 years ago

What percent of 94 is 23

Sedbober [7]

The answer is B)
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100(23/94)=n
100(0.24468085)=n
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