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2 years ago

Plz answer this right way

Mathematics

1 answer:

zlopas [31]2 years ago

3 0

Answer:

It will take 3 seconds.

Step-by-step explanation:

All we have to do is plug in the values we have to the equation the question gave us.

We know that the initial velocity or v = 48, and that the height we are trying to reach is =, so h = 0. We are solving for t

h = -16t^2 + vt

0 = -16t^2+48t

We can factor out -16t on the right side of the equation

0 = -16t(t-3)

Then using the zero product property, we can say that either -16t is equal to 0 in which case t is equal to 0 or t-3 = 0, in which case t = 3. We know that the ball had to leave the ground, so it couldn't have taken no time at all to come back onto the ground. Therefore, we know that the other solution is correct.

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Two smoothies and an ice cream cone cost $7.50. Three smoothies and two ice cream cones cost $12. Calculate the cost of a smooth

anygoal [31]

Answer:

Smoothie = 3

Ice cream = 1.5

Step-by-step explanation:

2s + i = 7.5

3s + 2i = 12

subtract the equations

(3s + 2i) - (2s + i) = s + i

s + i = 4.5

2s + i = 7.5, so s must equal 3 (7.5 - 4.5)

If s = 3, then i is 1.5 (4.5 - 3.5)

To check, plug 3 and 1.5 into s and i.

2(3) + 1.5 = 7.5

6 + 1.5 = 7.5

7.5 = 7.5

3(3) + 2(1.5) = 12

9 + 3 = 12

12 = 12

5 0

3 years ago

Pls help me with this

erastova [34]

The mean number is -48(:

7 0

3 years ago

a parallelogram has a base of 3 feet and a height of 5 feet. The base and height will each be doubled. Will the area also be dou

navik [9.2K]

Answer:

No, doubling the base and height would actually quadruple the area,

Step-by-step explanation:

With the original measurements of b = 3 ft and h = 5 ft,

b x h = A

(3) x (5) = 15 ft

So lets say we doubled the factors:

(2)(3) x (2)(5) = A

We would end up with 60 feet, four times that of 15.

(6) x (10) = 60 ft

3 0

3 years ago

13. Diberi v = u + at, cari nilai t apabila v = v = 42 u=-8 dana - 5. A.10 B.8 C.6 D.4

LiRa [457]

Answer:

Lol mcm soalan kamu salah. Pilih A je

Step-by-step explanation:

v = 42
u = -8
a = -5

Masukkan nilai tersebut dalam persamaan v = u + at,

42 = -8 + (-5)t

50 = -5t

t = -10

3 0

2 years ago

The outside of a picture frame measures 14 in and 20 in 196in^2 of the picture shows find the thickness of the frame

LuckyWell [14K]

The described picture frame can be visualized into two separate parts. The first area is equal to the area using the outermost dimensions for the length and width.
Area = Length x Height
Area = (20 in) x (14 in)
Area = 280 in²

We are given that the area is only equal to 192 in². We subtract this value from the computed area.
Difference = 280 in² - 192 in²
difference = 88 in²

This area is equal to the area of the hollow space inside the frame. That is equal to,
height = 20 in - 2x
length = 14 in - 2x

The area,
88 = (20 - 2x)(14 - 2x)

Simplify the right hand side of the equation.
88 = 280 - 68x + 4x²

Divide the equation by 4,
22 = 70 - 17x + x²

Transposing,
x² - 17x - 48 = 0
The factors of the equation is 58.2.

Thus, the thickenss is equal to 58.2 in

5 0

3 years ago