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BigorU [14]
3 years ago
13

Evaluating expressions. Someone please help

Mathematics
2 answers:
larisa86 [58]3 years ago
6 0
What is your level at school? I want to help you through the answers
Sholpan [36]3 years ago
3 0
Super easy so what your going to do is replace x with 5 and y with 3 (it says in the directions) for example number 1 3x-2y+4 so replace the variables with numbers so when there is a number next to a letter that means to multiply so 3x5-2x3+4 then you just solve and remember pemdas and when there bit two variables next to each other multiply hope this helps
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All real numbers greater thab or equal to 67
sineoko [7]
An equation for that would be.

x => 67
5 0
3 years ago
A circle is increased to have a circumference that is 4 times larger than the original. Which of the following options best desc
kogti [31]
Area of a circle is directly proportional to the square of radius of the circle while the circumference is proportional to the radius of the circle. This means that if the radius of a circle is increased x times, then its area will be increased to x^2 times the original area, and the circumference will increase to x times the original circumference.

Thus when the radius is doubled, or in other words if radius mad 2 time the original radius, the area of circle will become 2^2 = 4 time the original area. The circumference will become 2 times the original circumference.

We can calculate exact area and circumference of a circle from its radius using the following equations:

Area of circle = (pi/4)*r^2

Circumference of circle = 2*pi*r

Where r is the radius of the circle.

I know this is a lot, sorry.
3 0
3 years ago
I need help on this ASAP!!
vazorg [7]
The answer is 16 units
An easy way to find the perimeter is remembering the formula of a+b+c.
So in this case, you count how many units each line of the triangle it covers. 4+6+6= 16
7 0
3 years ago
Use the figure and flowchart Proof to answer the question which property of equality accurately completes reason C
blagie [28]

Answer:

Step-by-step explanation:

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7 0
3 years ago
Read 2 more answers
What is the simplest radical form of 45?
Hitman42 [59]
For this question I'm just going to use / as a square root sign because I don't know how to do it on a computer. Anyways...

So you have /45

Now you have to find a factor that is also a perfect square which is 9 (because 9x5=45)

So you now have /9x5

Since 9 is a perfect square (/9=3)

You can re write it is 3/5 which is the answer
4 0
3 years ago
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