MATHEMATICS HIGH SCHOOL

Please HELPPPP
Ill offer over 15 BRANLIST!! PLEASSEEEE

Answers

Answer 1

Answer:

Answer:

Dilation by a scale factor of 2 followed by a reflection over the y axis.

Step-by-step explanation:

The Y-axis is the vertical axis. So that cancels out the two about the x-axis. Then I counted the length of both triangles bases. Luckily for this one their bases aren't tilted but just flat. The big one is 6 and the small 3. Since it is going from one to the other you must find what number completes their equation. 3x = 6.

2

So that's how I got the last part of the problem

Sorry if this doesn't make sense. It seems just like ramble but it should help.

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At pizza Hut you can get 9 slices of pizza for $7.00. What is the price per slice of pizza?
Express 14.69 as a mixed number

Find the value of x. Your answer must be exact.
X
12.
600
X=

Answers

Answer:

x = 6√3

Step-by-step explanation:

Since the figure above is a right angled triangle we can use trigonometric ratios to find x

To find x we use sine

sin ∅ = opposite / hypotenuse

From the question

The hypotenuse is 12

The opposite is x

Substitute the values into the above formula and solve for x

That's

$\sin(60) = (x)/(12)$

$\sin(60) = ( √(3) )/(2)$

$x = ( √(3) )/(2) * 12$

We have the final answer as

x = 6√3

Hope this helps you

Mike is three times as old as his little sister, Mary. In 4 years, he will be twice as old as Mary. How old is Mary?

Answers

x-the age of Mike
y-the age of his sister

x=3y

x+4=2(y+4)
3y+4=2y+8
3y-2y=8-4
y=4 years

x=3*4=12 years

Mary: x yrs old
Mike: 3x yrs old

In four yrs:

Mary: x+4 yrs old
Mike: 3x+4 yrs old

As the text of task:

3x+4=2(x+4)
3x+4=2x+8
3x-2x=8-4
x=4

Mary is 4 yrs old

Please help me with this question, as soon as possible.

Answers

Answer:

B y is 3/4 of (x+y)

Step-by-step explanation:

a : is the same thing as a division sign or a fraction bar

so 1 : 3 = 1/3

this ratio says that for every 1 of x, there are 3 y's.

so 1x = 3y or y = 1/3x

x = 1; y = 3

x + y = 4

y / (x+y)

3 / 4

y is 3/4 of (x+y)

A race car moving along a circular track has a centripetal acceleration of 12 m/s. Ifthe distance between the car and the center of the track is 40 m, what is the speed
of the car?

Answers

Answer:

The speed of the car is 21.91 m/s

Step-by-step explanation:

Centripetal Acceleration

It's the acceleration experienced by an object in a uniform circular motion.

It always points toward the center of rotation and is perpendicular to the linear velocity v.

The magnitude of the centripetal acceleration is:

$\displaystyle a_c=(v^2)/(r)$

Where r is the radius of rotation.

The race car has a centripetal acceleration of $a_c=12 m/s^2$ and the radius of rotation is r=40 m.

We can calculate the speed of the car by solving the above equation for v:

$v=√(a_c\cdot r)$

$v=√(12\cdot 40)$

$v=√(480)$

$v=21.91\ m/s$

The speed of the car is 21.91 m/s

Find the slope for y = -x - 5 in slope intercept form

Answers

Answer:

Use the slope-intercept form to find the slope and y-intercept.

Slope: −1 y-intercept: (0,−5)

Step-by-step explanation:

What is the equation for this line?

Answers

Answer:

The equation of the line is y = 2x - 3

Step-by-step explanation:

The form of the linear equation is y = m x + b, where

m is the slope of the line, $m=(y2-y1)/(x2-x1)$

b is the y-intercept (value y at x = 0)

Let us take two points on the line to find its equation

∵ Points (3, 3) and (0, -3) lie on the line

∴ x1 = 3 and y1 = 3

∴ x2 = 0 and y2 = -3

→ Use the rule of the slope above to find m

∵ $m=(-3-3)/(0-3)=(-6)/(-3)=2$

∴ m = 2

→ Substitute its value in the form of the equation above

∴ y = 2x + b

∵ b is the value of y at x = 0

∵ y = -3 at x = 0

∴ b = -3

→ Substitute it in the equation above

∴ y = 2x + -3

→ Remember (+)(-) = (-)

∴ y = 2x - 3

∴ The equation of the line is y = 2x - 3

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A jar contains only pennies, nickels, dimes, and quarters. There are 14 pennies, 28 dimes, and 16 quarters. The rest of the coins are nickels. There are 70 coins in all. How many of the coins are not nickels? If n represents the number of nickels in the jar, what equation could you use to find n?

An airplane is flying in still air with an airspeed of 475 miles per hour. The plane is climbing at an angle of 16°. Find the rate at which the plane is gaining altitude. (Round your answer to four decimal places.)