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mr Goodwill [35]
3 years ago
6

If you were to solve the following system by substitution, what would be the best variable to solve for and from what equation?

2x+8y=12
3x-8y=11



A. y, in the second equation

B. x, in the second equation

C. x, in the first equation

D. y, in the first equation
Mathematics
1 answer:
zepelin [54]3 years ago
7 0
Honestly this problem you can use both x and y but x tends to be the easier one to use and i would use the first equation because it is easier to solve because all the numbers are even.<span />
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Help? ^-^ WILL GIVE BRAINLIEST!<br><br> What is the slope of a line through (1, 3) and (-2, 2)?
ryzh [129]

Answer:

<em>The slope of the line is </em>\frac{1}{3}<em />

Step-by-step explanation:

<u>The Slope of a Line </u>

Suppose we know a line passes through points A(x1,y1) and B(x2,y2). The slope can be calculated with the formula:

\displaystyle m=\frac{y_2-y_1}{x_2-x_1}

It's given the points (1,3) and (-2,2). Let's calculate the slope:

\displaystyle m=\frac{2-3}{-2-1}

Calculating:

\displaystyle m=\frac{-1}{-3}

\displaystyle m=\frac{1}{3}

The slope of the line is \frac{1}{3}

7 0
3 years ago
This is about the cone formula. If you don't know it, please don't answer. If you do, PLEASE ANSWER.
lions [1.4K]

9514 1404 393

Answer:

  (b)  10.5 in

Step-by-step explanation:

The formula for the volume of a cone is ...

  V = 1/3πr²h . . . . . . for radius r and height h

Then the height is ...

  h = 3V/(πr²)

Your cone has a volume V = 199 in³ and radius r = 4.25 in, so the height is ...

  h = 3(199 in³)/(π(4.25 in)²) ≈ 10.52 in

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6 0
3 years ago
The circumference of a circle is 16\pi16π inches. What is the radius of the circle?
marissa [1.9K]

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Step-by-step explanation:

8 0
3 years ago
Whar is the LCM of 1/6 and 3/8​
aalyn [17]
<h3>Answer: 24</h3>

==========================================

There are 3 methods to find the lowest common multiple (LCM)

---------------------------

Method 1

List out the multiples of 6 and 8

multiples of 6 = {6, 12, 18, 24, 30, 36, 42, 48, ...}

multiples of 8 = {8, 16, 24, 32, 40, 48, ...}

We see that 24 is the smallest number in both sets at the same time. So this is the LCM.

---------------------------

Method 2

Write the prime factorization of 6 and 8

prime factorization of 6 = 2*3

prime factorization of 8 = 2*2*2

The unique prime factors here are 2 and 3. We have 2 show up at most three times meaning that 2*2*2 = 8 is a factor of the LCM. The number 3 is also a factor meaning that 8*3 = 24 is the LCM.

---------------------------

Method 3

Multiply the denominators 6 and 8 to get 6*8 = 48

48 is a common multiple, but its not the smallest

we can divide 48 over the GCF 2 to get 48/2 = 24, which is the actual LCM.

So when you have 2 different denominators, you can multiply their values and then divide by the GCF to get the LCM.

3 0
3 years ago
Read 2 more answers
What is 17.318 rounded to the nearest hundredth
Solnce55 [7]

17.32

hope this helps

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5 0
4 years ago
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