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KengaRu [80]
3 years ago
7

Can someone please help

Mathematics
1 answer:
exis [7]3 years ago
6 0
For number one, you can say the some of 10 and quotient of c and five.

For number two you would say the difference of the product of 3 and f and 7.

You can represent the situation for number three this way:

5(7.50 + 2.50x)

The $7.50 plus $2.50x is the cost for one person. Because there are five people, but the five outside of the parentheses that way we understand there are five groups of the entire expression.

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After t seconds, a ball tossed in the air from the ground level reaches a height of h feet given by the equation h = 144t-16t^2
lesantik [10]
144t-16t^2= 16t(9-t)
after 3 seconds (just substitute t=3):
16(3)(9-3)=
16(3)(6)=
16*18=
288
maximum height: find the average of the roots:
the roots of 16t(9-t) are t=0 or t=9
since it's a parabola, the maximum is at t=4.5, at 324 ft
if its height is 224 feet, the equation is 224=144t-16t^2
16t^2-144t+224=0
divide by 16: t^2-9t+14=0
this can be factored as (t-2)(t-7)=0
the roots are t=2 and t=7, so the ball has been in the air for either 2 seconds or 7 seconds
the roots to 144t-16t^2 are 0 and 9, so the ball will hit the ground 9 seconds after being thrown
4 0
3 years ago
Read 2 more answers
Why do systems of nonlinear equations sometimes have more than one solution​
Mice21 [21]

Answer:

System of two linear equations can't have exactly two solutions. Reason is that when we have two straight lines,they can only intersect at one point of intersection,no more. Or let's see if lines are equivalent,then they have infinitely many solutions,because any point on line can be solution for the system.

Step-by-step explanation:

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Step-by-step explanation:

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therfor

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