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boyakko [2]
3 years ago
7

(Photo attached) Parametric Equations. Thank you for your help!

Mathematics
1 answer:
jenyasd209 [6]3 years ago
6 0

Step-by-step explanation:

cos^2(t)+sin^2(t)=1

4cos^2(t)/4 + 81sin^2(t)/81 =1

2^2(cos^2(t))/2^2 + 9^2(sin^2(t))/9^2=1

[2cos(t)]^2/2^2 +[ 9sin(t)]^2/9^2=1

since x^2/2^2 +y^2/9^2=1

X=2cos(t) ,y=9sin(t)

X(t)= 2cos(t) here r=2

y(t)=9sin(t)

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6. At a game, there were 24 adults and 10 children. Keeping the same ratio,
irina1246 [14]

Answer:

The total number of adults will be: 120 adults

Step-by-step explanation:

Given that there were 24 adults and 10 children in a game.

Thus, adults to children ration = 24:10 or 24/10

  • If there were 50 children, how many adults would be at the game?

Let 'x' be the number of adults when there 50 children.

so the ration of adults 'x' to 50 childern = x: 50 or x / 50

As the ratio is the same.

Thus,

24 : 10 = x : 50

24/10 = x/50

switching sides

x/50  = 24/10

x  = 24/10 × 50

x = 120 adults

Therefore, the total number of adults will be: 120 adults

6 0
3 years ago
Write 5 pounds for $2.49 a unit rate round to the nearest hundredth
slava [35]

About $0.50 per pound.

3 0
3 years ago
13. The altitude of an equilateral triangle is 6 in. long. Find the length of a side of the triangle. (Hint: what triangles are
JulijaS [17]
Yeah the answer is in that file
6 0
3 years ago
Simplify the expression 3a + b, when a=1.4 -2x and b=-0.2x + 1.7*
kenny6666 [7]

Answer:5.9-6.2x

Step-by-step explanation:

a=1.4-2x

b=-0.2x+1.7

 3a+b

=3(1.4-2x)+(-0.2x+1.7)

=4.2-6x-0.2x+1.7

=4.2+1.7-6x-0.2x

=5.9-6.2x

3 0
3 years ago
Read 2 more answers
The andersons can set up 6 tables in 1 hour how many tables can they set up in 5 hours
Talja [164]

They can set up total 30 tables in 5 hours.

<h3>How is a multiplication explained?</h3>

Multiply in mathematics refers to the continual addition of sets of same size.

2 × 3 = 6

It can be interpreted this way:

Three times two equals six.

Three times two equals six.

Six is two threes.

Given,

Andersons can set up 6 tables in 1 hour

Tables they can set up in 5 hours = 5 × 6

= 30

To learn more about multiplication from given link

brainly.com/question/4721701

#SPJ9

7 0
1 year ago
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