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shtirl [24]
3 years ago
14

4) A trucker wanted to track how long it took to reach Concord. When she started out, her clock

Mathematics
2 answers:
Rainbow [258]3 years ago
5 0

Answer:

In total, it took 3 hours to get to Concord.

Step-by-step explanation:

This is elapsed time. From 7 AM to 10 AM, 3 hours passed. Therefore it takes 3 hours to get to Concord.

Reil [10]3 years ago
4 0
Yes he is correct hehe
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The number of milligrams of a certain medicine a veterinarian gives to a dog varies directly with the weight of the dog. If the
Andre45 [30]

Answer:

Step-by-step explanation:

A direct variation equation is of the form

y = kx,

where, in words, it reads "y varies directly with x" or "y varies directly as x". In order to use this as a model, we have to have enough information to solve for k, the constant of variation. The constant of variation is kind of like the slope in a straight line. It rises or falls at a steady level; it is the rate of change.

We have that a vet gives a dose of three-fifths mg to a 30 pound dog. If the dose varies directly with the weight of the dog, then our equation is

d = kw and we need to find k in order to have the model for dosing the animals.

\frac{3}{5} =k(30)

Divide both sides by 1/30 to get k alone.

(\frac{1}{30})(\frac{3}{5})=k and

k=\frac{1}{50}

Our model then is

d=\frac{1}{50}w

This means that for every pound of weight, the dog will get one-fiftieth of a mg of medicine.

7 0
3 years ago
Read 2 more answers
A circle with radius 4 centimeters.
Vaselesa [24]

Answer:

16pi cm2

Step-by-step explanation:

Area of a circle = pi * radius * radius = pi * 4 cm * 4 cm = 16pi cm2

4 0
3 years ago
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Helen has 112 coins she has 8 times as many coins as jake how many coins dose jake have in his collection
lions [1.4K]
Jake has 14 coins in his collection. 112 divided by 8 equals 14.
5 0
3 years ago
Given sinx=45 and cosx=35 .<br><br><br><br> What is ratio for ​ tanx ​ ?
allochka39001 [22]
I guess you mean  4/5  and 3/5

this is  a right angled triangle with side 3-4-5  so 5 is the hypotenuse

sin x =  opp / hyp  = 4/5 so the opposite side is 4
cos x = adj/hyp = 3/5 so the adjacent side = 3

so tan x =  opp/adj =  4/3
6 0
3 years ago
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Please help I just need the answer to this equation <br> Y = -4x + 78
Korolek [52]

Answer: You can't solve for y or x, but you can graph it.

Hope this helps!

7 0
2 years ago
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