If y=2 when x=3. What is the value of y when x=9?

Answers

Answer 1

Answer: because x was *3 you had to y*3 which is
y=6

Answer 2

Answer: y = 2
x = 3

If x = 9, = x * 3

Thus, y * 3 = 6.

Thus, y = 6.

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in a bag of red and green sweets,the ratio of red sweets to green sweets is 3:4. if the bag contains 24 green sweets how many red sweets are there

Answers

set this up as a proportion 3:4 to x:24 and then you cross multiply getting:

4x = 72

Now divide by 4 and you get:

x = 18

so there are 18 red sweets.

The perimeter of a rectangle swimming pool is 160 feet. The length of the swimming pool is four times its width . Find the dimensions of the swimming pool.

Answers

Formula for Perimeter of Rectangle:

P = 2(L + W)

Plug in 160:

160 = 2(L + W)

L = 4W
So we can plug in '4W' for 'L' in the first equation.
160 = 2(L + W)

160 = 2(4W + W)

Combine like terms:

160 = 2(5W)

160 = 10W

Divide 10 to both sides:

W = 16

Now we can plug this back into any of the two equations to find the length.

L = 4W

L = 4(16)

L = 64

So the width is 16, and the length is 64.

The length of the swimming pool is 64 feet long, and the width is 16 feet long. So the pool is 64' by16'

Solve the equation X^2 +10x+24=0

Answers

Answer:x= -4 and -6

Step-by-step explanation:

To solve the equation x²+10x+24=0, we need to factorize. Factorizing this using the general formula,

x = -b+/-√b²-4ac/2a

Generally, quadratic equation are of the form ax²+bx+c=0

Comparing the coefficients;

a= 1, b=10 and c=24

Substituting this into the general formula,

x = -10+/-√10²-4(1)(24)/2(1)

x = -10 +/-√100-96/2

x = -10 +/-√4/2

x = -10 +/- 2/2

x = -10 + 2/2 and -10-2/2

x = -8/2 and -12/2

x = -4 and -6

(x+6) (x+4) thats the answer

A circular fountain has a radius of 9.4 feet find its diameter and circumference to the nearest tenth

Answers

Answer:

18.8 feet, 59.1 feet to the nearest tenth

Step-by-step explanation:

The diameter is the line drawn that divides the circle into two while the circumference is the perimeter of the circle. Both are a measure of the radius of the circle.

The diameter D = 2r where r is the radius of the circle

The circumference = 2Πr = ΠD where Π = 22/7

Given that the circular fountain has a radius of 9.4 feet

Its diameter = 2 × 9.4 feet = 18.8 feet

The circumference = 22/7 × 18.8 feet

=59.09 feet

≈ 59.1 feet to the nearest tenth