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pentagon [3]
4 years ago
14

Two cars are 400 miles apart when they start moving towards each other. The speed of the first car is 30 mph. The second car mov

es 20mph faster than the first car. After how many our will the cars meet
Mathematics
1 answer:
Leni [432]4 years ago
3 0

Answer:

5 hr.

Step-by-step explanation:

this is because one car is moving at 30 miles an hour and the other at 30+20 miles an hour = 50mph. so after 1 hour one car would have gone 30 miles and the other 50 = 80 altogether not 400 yet. After 2 hours one car would have gone 60 miles and the other 100 = 160 not 400 yet. ECT... After five hours one car has gone 150 mile (30mph*5hr = 150miles) and the other 250miles (59mph*50hr = 250miles) = 400, since 150+250=400. Therefore it would take 5hr for the cars to meet. and crash ._.

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D. 192in^2

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So we just need to plug in our values into the equation, so the equation would look like a= (16)*(24)*1/2. 16 times 24 would then give you 384, you could either divide by 2 or multiply by 0.5 to get the next answer, as long as your HALVING the answer.

So we have our bh value so now we can multiply by 1/2 which will give us 384*1/2 which leaves us with 192.

I have also attached a photo of doing a longer(ish) way than this, that also proves that this equation works. Either one will provide you an answer.

6 0
3 years ago
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8 0
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Mrs. Gordon bought 10 kg of apples for $16.50. What is the price per pound of apples?
natulia [17]

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Step-by-step explanation:

4 0
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IRINA_888 [86]

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pointing towards the top

Step-by-step explanation:

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The degree of the function f(x) = -(x + 1)2(2x - 3)(x + 2)2 is<br> , and its y-intercept is
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Answer:

Degree = 5

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Step-by-step explanation:

our function is given as

f(x)=-(x+1)^2 \cdot (2x-3) \cdot (x+2)^2

in the above polynomial our variable is x and it is being multiplied for 5 times. Hence the probable degree for the above polynomial is 5

In order to find the y intercept , we need to put x=0 in f(x) as y intercept is the point at which the function graphically meets y axis and where x = 0

Hence

f(0)=-(0+1)^2 \cdot (2(0)-3) \cdot (0+2)^2

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Hence the y intercept is 12 units

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3 years ago
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