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mart [117]
3 years ago
11

The function

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
6 0

Answer:

3 seconds.

Step-by-step explanation:

f(t) = height of the disc = -18t^2 + 42t + 36.

This equals zero when it completes its path, so:

-18t^2 + 42t + 36 = 0

-6(3t^2 - 7t - 6) = 0

-6 (3t + 2)(t - 3) = 0

t = 3 seconds  (We ignore the negative zero).


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What’s the x and y intercepts of this equation: -3x-7y=84
Arlecino [84]

Answer:

The X and Y intercepts to the equation -3x - 7y = 84 is

x-intercept (s): (−28,0)

y-intercept (s): (0,−12)

Step-by-step explanation:

To find the x-intercept(s), substitute in 0 for y and solve for x

−3x−7⋅0=84

Solve the equation.

x=−28

x-intercept(s) in point form.

x-intercept (s): (−28,0)

To find the y-intercept(s), substitute in 0 for x and solve for y .

−3⋅0−7y=84

Solve the equation.

y=−12

y-intercept(s) in point form.

y-intercept (s): (0,−12)

Hope this helps.

4 0
4 years ago
8 less than one third of x is y.
Andre45 [30]
1/3x - 8 = y <== ur equation

4 0
3 years ago
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An elevator starts at floor 5. It goes up 6 floors twice, and then it goes down 8 floors. A second elevator
omeli [17]

Answer:

Part 1 is ELevator 2 because elevator one ends on floor 9 and elevator 2 ends on floor 23. Part 2 is Elevator 1 ends on floor 9 and Elevator 2 ends on floor 23.

Step-by-step explanation:

6 0
2 years ago
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What is the quotient of a number and 5​
KengaRu [80]

Sorry but that's an unclear question, can you double check to see if you included everything, and also check to see the possible answers?

3 0
3 years ago
Ivana works at a department store selling perfume and makeup. She earns $375 per week and 4% commission on her sales. If Ivana's
Aleks04 [339]

Answer:

<h2>$1380.2</h2>

Step-by-step explanation:

Step one:

given data

weekly earnings= $375

Commission is 4% of sales.= 0.4

supposing sale is x, and the total earning is y

the expression for the total earning will be

y=375+0.4x

Step two:

for x= 2513, y will be

y=375+0.4(2513)

y=375+1005.2

y=1380.2

<em><u>Hence  her total earnings for the week will be $1380.2</u></em>

3 0
3 years ago
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