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Yuliya22 [10]
3 years ago
15

Ii need help real quick !!

Mathematics
1 answer:
Katen [24]3 years ago
8 0

Answer:

I'm confused what the question is. I think you might have attached the wrong picture

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Let t be time in seconds and let r(t) be the rate, in gallons per second, that water enters a reservoir: r(t)=700−40t. a) For 0≤
Flura [38]
What you don't want is the value of r(t) becoming negative. Surely that would represent water escaping the reservoir.

How big can (t) get before water actually starts escaping the reservoir?

Essentially, to figure this out r(t) would have to be equal to 0. 

700 - 40t = 0

40t=700

t=700/40=17.5

So the first answer is 17.5 seconds. After this amount of time has elapsed the reservoir will start to lose water as r(t) would become negative.

---------------

The reservoir had the least amount of water in it before it was being filled. That was when t=0. The volume of water in the reservoir wasn't negatively impacted as not enough water had escaped it during the 17.5 to 30 second period.
7 0
3 years ago
One of the giraffes, Bernard, is sick. Last week he weighed 2,490 pounds. This week he weighs 2,312 pounds. If w represents the
victus00 [196]

Answer:

w+2,312=2,490

w=178\ pounds

Step-by-step explanation:

Let

w ----> the amount of weight lost in pounds

we know that

The amount of weight Bernard lost plus the weight of this week must be equal to the weight of the last week

so

The linear equation that represent this situation is

w+2,312=2,490

solve for w

subtract 2,312 both sides

w=2,490- 2,312=178\ pounds

4 0
3 years ago
Read 2 more answers
ema scores 72 marks out of 80 in her inglesh exam convert into 90 percent what is the answer step by step​
FrozenT [24]
(72/80)x90=81
Divide seventy-two by eight and multiply it Ninety.
5 0
3 years ago
Read 2 more answers
Can some one solve this
Roman55 [17]
Well, first you have to convert to one unit... then simplify
D:H
150m:16500cm
150m:160m
150:160
30:33
10:11
7 0
4 years ago
Y(0.5+2) please help me on this !!!
Alecsey [184]

Answer:

0.5y+2y

Step-by-step explanation:

bc you divide out the y

7 0
3 years ago
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