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Kamila [148]
4 years ago
6

How to solve this question

Mathematics
1 answer:
MAVERICK [17]4 years ago
4 0
Hello there.

<span>4 3/4 - 2 3/4

19 over 4 - 2 3/4 = 19/4 - 11/4 = ?

After working that out. Your answer should be 2

Answer: 2</span>
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A ball is shot straight up from the top of a 15-story building. The motion of the ball could be described by the function: h(t)=
viktelen [127]

Answer:

  • After 4 seconds the height is 480 meters.
  • The maximum height is 484 meters.
  • The ball hits the ground after 10 seconds

Step-by-step explanation:

The height after four seconds is h(4) = -16 * r² + 144*4+160 = 480

The maximum height of the ball is the value it takes at its vertex 'v = -b/2a'. In this case a = -16 and b = 144, so the v = -144/-32 = 4.5. The maximum height of the ball as a result is h(4.5) = -16 (4.5)² + 144*4.5 + 160 = 484

To find the moment the ball hits the ground, we need to find when h takes the value 0 by using the quadratic formula, with a = -16, b = 144 and c = 160.

r_1,r_2 = \frac{-144 \, ^+_- \sqrt{144^2-4*(-16)*160}}{2*(-16)} = \frac{-144 \, ^+_- \sqrt{30976}}{-32} = \frac{-144 \, ^+_- 176}{-32} = -1, 10

Since t cant take negative values, then the correct value is 10. The ball hits the ground after 10 seconds.

7 0
3 years ago
Two quantities a and b have a proportional relationship where a is -4 and b -3 create an equation to represent this relationship
sladkih [1.3K]

Answer:

a = (4/3)b

Step-by-step explanation:

The governing equation here has the form y = kx, where k is the constant of proportionality.

Let's rewrite that as a = kb, and then substitute -4 for a and -3 for b:

-4 = k(-3), or k = 4/3

Then a = (4/3)b

6 0
3 years ago
Let's divide and find quotient <br><br>1.8÷3​
PSYCHO15rus [73]

Answer:

the answer is 0.6

Step-by-step explanation:

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7 0
2 years ago
Every week, Mr. Kirkson uses 3 1/6 gallon of water to water every 1/3 square foot of his garden. How many gallons of water does
kirill115 [55]

Since 3 1/6 is only 1/3 of what he is watering, you can multiply the 3 1/6 by 3 to find your answer

9 1/2 should be your answer.

First you multiply the whole number by 3

3x3 = 9

Now we multiply the fraction

1/6 x 3 = 1/2 because we multiply the 1 on top. 3x1 = 3 and 3/6 is reduces to 1/2

8 0
4 years ago
PLS HELP I WILL GIVE BRAINLIEST
BaLLatris [955]

Answer:

81°

Step-by-step explanation:

By the outside angle theroem, we know that 2 * angle APC is differece of arcs DC and AB.

Angle APC = 27° so the difference is 54°

Arc DC = 27°, so Arc AB =  27° + 54° or 81°.

5 0
3 years ago
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