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trasher [3.6K]
2 years ago
13

Jen recently rode her bicycle to visit her friend who lives 6 miles away. On her way there, her average speed was 8 miles per ho

ur faster than on her way home. If jen
spent a total of 2 hours bicycling find the two rates.
Mathematics
1 answer:
SOVA2 [1]2 years ago
3 0

the answer is in the picture above

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krek1111 [17]

Answer:To round 0.994 to the nearest tenth consider the hundredths’ value of 0.994, which is 9 and equal or more than 5. Therefore, the tenths value of 0.994 increases by 1 to 0.

0.994 rounded to the nearest tenth = 1.0

Step-by-step explanation:

3 0
3 years ago
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A farmer has 1,200 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence a
iVinArrow [24]
Yay, derivitives
I'mma ignore that x is the shorter side because I don't know which one has to be shorter yet


we need to find the max area
but with 3 sides

area=LW
let's say the sides are z and y
zy=area

and the relatiionship between them is
hmm,
z+2y=1200
because one side has no fencing
so
z+2y=1200
solve for z
z=1200-2y
sub for z in other

(1200-2y)(y)=area
expand
1200y-2y²=area
take derivitive
1200-4y=dy/dx area
max is where dy/dx goes from positive to negative
solve for where dy/dx=0
1200-4y=0
1200=4y
300=y

at y<300, dy/dx<0
at y>300, dy/dx>0
so at y=300, that is the max

then
z=1200-2y
z=1200-2(300)
z=1200-600
z=600

so then
z=600
y=300
300<600

so the shorter side would be y

so then we see our choices and noticed that
erm
I think it is f(x)=1200x-2x²
takind the derivitive yeilds none of the others


so ya, you are right
6 0
3 years ago
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A swimming pool with 1100
elixir [45]

Answer:

y = 50x - 1100

Step-by-step explanation:

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Find |−3/5|+3/4. Write your answer as a mixed number in simplest form.
cricket20 [7]

Answer:

1 7/20

Step-by-step explanation:

|-3/5|+3/4= 3/5+3/4

= 27/20

= 1 7/20

4 0
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Latisha Started her history classWith two scores on tests72% and 89%Confirm that the meanOf these two scoresIs 80.5%
Marina86 [1]

72+89=161

161/2=80.5

So yes, it is correct!

6 0
3 years ago
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