3 years ago

Show steps please

Mathematics

1 answer:

Oliga [24]3 years ago

7 0

Answer:

I cant understand..

Step-by-step explanation:

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castortr0y [4]

Answer:

B) >

Step-by-step explanation:

61.30 is greater than 61.28 by 0.2. and the second sign, (>), compares that 61.30 is greater than

8 0

3 years ago

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Two thirds of a number reduced by 11 is equal to 4 more than the numher. find the number

Anika [276]

Answer:

- 45

Step-by-step explanation:

let n be the number , then

$\frac{2}{3}$ n - 11 = n + 4 ( add 11 to both sides )

$\frac{2}{3}$ n = n + 15 ( multiply through by 3 to clear the fraction

2n = 3n + 45 ( subtract 2n from both sides )

0 = n + 45 ( subtract 45 from both sides )

- 45 = n

The number is - 45

8 0

3 years ago

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Tom drops a coin from the top of a building. Tom is 90 meters from the ground when he drops the coin. A) What is the height of t

Delvig [45]

Disregarding air friction, the distance traveled by an object due to gravity is : H = 0.5*g*t^2.   g is the gravitational constant at the surface of earth.

g= 9.81 m/s^2

After 3 seconds, Distance = .5*9.81*9 = 44.15 meters traveled.

Since it was dropped from a height of 90 meters, the current height is 90 - 44.15 = (a) 45.85 meters

(b) It has to travel 90 meters to hit the ground . So we must find t

Using the same equation

t = (2*H/g)^.5

t = (2*90/g)^.5 = 4.28 seconds until it hits the ground

3 0

3 years ago

Brooke is paving a parking spot shown below. It costs $40 to pave each square meter.

lozanna [386]

Benenjnrmmrjrbr fbjrrkjen r their

5 0

3 years ago

when a cannonball is fired, the equation of its pathway can be modeled by h=-16t squared + 128t. find the time it will take for

Rashid [163]

At the time the cannonball reaches the ground, the vertical height of the cannonball from the ground is 0, i.e. h = 0.

Thus, the time it will take the cannonball to reach the ground is given by

$-16t^2+128t=0 \\ \\ \Rightarrow t(-16t+128)=0 \\ \\ \Rightarrow t=0\ or\ -16t+128=0 \\ \\ \Rightarrow16t=128 \\ \\ \Rightarrow t= \frac{128}{16} =8$

Therefore, it will take the cannonball 8 seconds to reach the ground.

5 0

4 years ago