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Crank
4 years ago
7

Natalie kicked a soccer ball. The equation h=-16t^2+50t describes the height of the ball (T) seconds after it was kicked. Approx

imately how many seconds went by before the ball hit the ground?
Mathematics
1 answer:
rosijanka [135]4 years ago
4 0

Answer:

Time, t = 3.125 s

Step-by-step explanation:

The height attained by the ball after it was kicked is given by as a function of time t as :

h=-16t^2+50t

It is required to find the time until which the ball hits the ground. At that point, h(t) = 0

So,

-16t^2+50t=0\\\\t(-16t+50)=0\\\\t=0, -16t+50=0\\\\t=0, 3.125\ s

So, 3.125 seconds before the ball hit the ground.

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You randomly draw twice from this deck of cards
Serggg [28]

The probability of not drawing C in neither draw is P = 0.5

<h3>How to get the probability?</h3>

All the cards have the same probability of being drawn, in this case, our set of cards is {F, D, C, G}

The probability of not drawing C is equal to the probability of drawing F, D or G. So we have 3 options out of 4, then the probability is:

p = 3/4.

Now we draw another, this time there are 3 cards, one of these is C, and the other two cards are not C. Then the probability of not drawing C again is equal to 2 over 3.

q = 2/3.

The joint probability (for both of these events to happen) is equal to the product of the individual probabilities:

P = p*q = (3/4)*(2/3) = 0.5

If you want to learn more about probability, you can read:

brainly.com/question/251701

3 0
2 years ago
Help me, please
BigorU [14]

Answer:

41.6

Step-by-step explanation:

The area is measurement of the surface of a shape. To find the area of a rectangle or a square you need to multiply the length and the width of a rectangle or a square. Area, A, is x times y.

8 0
3 years ago
Read 2 more answers
A - 15 = 22 what the value of a
svetlana [45]

a - 15 = 22

a = 22 + 15

a = 37

The value of a is 37

7 0
3 years ago
Write a decimal where the value of a digit is 1/10 as much as a digit in another place.
dolphi86 [110]

<span>10.1,  20.1  , 30.1 are the decimal where the value of digit 1/10 had existed.</span>

<span>“Decimal” comes from the Latin root decem, which simply means “ten.” The number system we use is called the decimal number system, because the place value units go in tens: you have ones, tens, hundreds, thousands, and so on, each unit being 10 times the previous one.</span>

 

In common language, the word “decimal number” has come to mean numbers which have digits after the decimal point, such as 5.8 or 9.302. But any number within the decimal number system could be designate a decimal number, involve whole numbers such as 12 or 381.

<span>A Decimal Number (<span>based on the number 10</span>) contains a Decimal Point.</span>

<span>Here is the number "forty-five and six-tenths" written as a decimal number:</span>

The decimal point goes between Ones and Tenths.

45.6 has 4 Tens, 5 Ones and 6 Tenths, like this:<span>40+5+6/10</span>

6 0
3 years ago
After driving 378 miles, they have used 14 gallons of gas. They have 243 miles left to drive on the trip. How much gas will they
dsp73

Answer:

9 gallon of gas

Step-by-step explanation:

When distance covered is 378 miles, they have used 14 gallons of gas

We need to find how much gas will they need to finish the trip if 243 miles left to drive on the trip.

378 miles = 14 gallons of gas

For 1 mile,

1 gallon of gas is used for \dfrac{14}{378}\ \text{gallon of gas is used}

For 243 miles,

= \dfrac{14}{378}\times 243\ \text{miles}\\\\=9\ \text{gallon of gas is used}

Hence, for 243 miles 9 gallon of gas is used.

6 0
3 years ago
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