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natka813 [3]
3 years ago
12

Does anyone know the answers to this test???OFFERING LOTS PF POINTS. Just Incase the picture isn’t loading it’s the parametric f

unctions test Part 1 in pre calculus.

Mathematics
1 answer:
steposvetlana [31]3 years ago
6 0

Answer:

The correct choice is C

Step-by-step explanation:

The given curve is described by the parametric equations:

x=4-t

y=t^2-2

Let us eliminate the parameter by making t the subject in the first equation and substitute into the second equation;

t=4-x

We substitute this into the second equation to get:

y=(4-x)^2-2

This is the equation of a parabola whose vertex is at (4,-2)

The correct choice is C

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If Joanne can paint a room in 3 hours and her sister Angela can paint the same room in 4 hours, how long (in h) would it take Jo
Gala2k [10]

Answer:

Step-by-step explanation:

If J can paint a room in 3 hours, in 1 hour she gets \frac{1}{3} of the job done.

If A can paint a room in 4 hours, in 1 hour she gets \frac{1}{4} of the job done. We need to find out how long it takes them if they paint together. The equation for this is:

\frac{1}{3}+\frac{1}{4}=\frac{1}{x} where x is the number of hours it takes them to get the job done together. Multiply everything through by 12x to get

4x + 3x = 12 so

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x = 1.7 hours to get the room painted together.

7 0
3 years ago
Each diagram is made of smaller, identical pieces. Tell how many pieces you would shade to model 25%
eduard

Answer:

12 pieces

Step-by-step explanation:

8 0
2 years ago
Tickets for Adults were $14.50 and tickets for Children were $9.00. We purchased 12 tickets and spent a total of $135.50 to get
mihalych1998 [28]

Answer:

(5 , 7)

Step-by-step explanation:

let a = the number of adult tickets

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then we have to solve the following system

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we proceed by Substitution:

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After some calculations we find

a=5 and c=7

6 0
3 years ago
Read 2 more answers
A pool in the shape of a rectangular prism is being filled with water. The length and width of the pool is 24 feet and 15 feet.
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Answer:

40,680

Step-by-step explanation:

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jek_recluse [69]
I'm pretty sure it is 5:55


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