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OLEGan [10]
3 years ago
12

A ball is thrown from an initial height of

Mathematics
1 answer:
Eduardwww [97]3 years ago
8 0

Answer:

Step-by-step explanation:

If we are looking for the times that the ball was 11 meters off the ground, we sub in 11 for the height on the left and solve for t:

11=-5t^2+30t+1 and

0=-5t^2+30t-10 and factor this however it is you are factoring in class to solve for t to get

t = .35 seconds and t = 5.6 seconds

Because the ball reaches this point in its way up and then passes it again on its way down, the ball will have 2 times at this height.

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Rhonda drove 51 miles per hour for 5 hours. She then drove 55 miles per hour for x hours. Which expression is equivalent to the
lawyer [7]

The expression equivalent to the total distance Rhonda drove is 51x = 275

Given:

Distance 1:

Number of miles = 51 miles

Number of hours = 5 hours

Distance 2:

Number of miles = 55 miles

Number of hours = x hours

<em>Ratio of miles to number of hours</em> = 51 miles : 5 hours

<em>Ratio of miles to number of hours</em> = 55 miles : x hours

Equate the ratios

51 : 5 = 55 : x

51/5 = 55/x

cross product

51 × x = 5 × 55

51x = 275

x = 275 / 51

x = 5.392156862745098

Approximately,

x = 5.4 hours

Therefore, the number of hours taken to travel 55 miles is 5.4 hours

Read more:

brainly.com/question/3796978

7 0
3 years ago
Use the intercept formula x a + y b = 1, where a and b are the x- and y-intercepts, respectively, to find an equation of a line
Eddi Din [679]
Just plug em in
5x + 8b = 1
hope this helps!
3 0
4 years ago
The length of a side of a cubical box is 45 m.Find its volume​
Harlamova29_29 [7]

Step-by-step explanation:

Since the box is a cube,

Length = Width = Height = 45m.

Volume of box = Volume of cube

= Length x Width x Height

= 45 \times 45 \times 45 \\  = 91125 {m}^{3}

8 0
3 years ago
Find the discount and the selling price, when:<br> (ii) the printed price =₹12750, discount= 25/3%
vodomira [7]

Answer:

12,741.66666

Step-by-step explanation:

12750 - 25/3%

= 12,741.66666

3 0
2 years ago
Carson drives to school the same way each day and there are two independent traffic lights on his trip to school. He knows that
Lorico [155]

Answer:The correct answer is A, 14%.

Step-by-step explanation:

All you have to do is take the 30% chance of you HAVING to stop at the first light and find the chance that you won't have to stop at the first light, which is 70%, or .7. Then you take the chance of having to stop at the second light which is 80%, and find the probability of NOT having to stop there, which is 20%, or .2. Then you multiply the probabilities of not having to stop, which equals to .14.

8 0
3 years ago
Read 2 more answers
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