Which transformation represents a reflectiom over the y axis

1 answer:

3 0

A reflection over the Y-axis would be the flipped point or set of points across the y axis while still retaining the same distance from the y-axis.

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chi has a big pile of nickels. he says, "even if I use 100 of these nickels, I'll still have 95% of my original pile." how many

Bond [772]

Chi would have two thousand nickels because if 100 nickels is 5% and 100 divided 5 is 20 so a 100 times 20 is 2000

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A closed cylindrical tank had a diameter and height 7m what is the capacity of the tank

bezimeni [28]

Area of a cylinder is pi*r^2*h

The radius is half the diameter.

So the radius is 3.5

3.14*3.5^2*7=269.255 cubic meters.

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3 years ago

The height of a triangle is 3cm less than twice the base. The area is 10cm2

Kamila [148]

Answer:

The base is 4cm and the height is 5cm.

Step-by-step explanation:

This is a solve the system question. Call H the height of the triangle and B the base. The question tells us:

$H=2B-3$

and

$\frac{B \times H}{2}=10$

Sub the first equation into the second (as H is already isolated). You will end up with a quadratic equation - solve that any way you wish (e.g. quadratic formula). I've provided the factored form below which shows you the roots:

$\frac{B(2B-3)}{2}=10\\\frac{2B^2-3B}{2}=10\\2B^2-3B=20\\2B^2-3B-20=0\\(2B+5)(B-4)=0\\B= - \frac{5}{2},4$

In this question, we take B=4. You can't have a negative side length so the other answer is eliminated. Now sub the value for B into either of the original equations. I'll use the first, again because H is already isolated:

$H=2(4)-3\\H=8-3\\H=5$

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3 years ago

Sarah got a 80% on her pre algebra final exam. if there were 75 questions total how many did sarah get correc? How many did she

stepladder [879]

She got 60 correct and 15 wrong. She got 11.25% wrong

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2 years ago

Read 2 more answers