All categories

4 years ago

When x=8,y=20.find y when x=20

2 answers:

7 0

When x=8,y=20. Find y when x=42

As Andy said, there are many ways of looking at this:

Setting up a proportion gives us...
8 is to 20 as 42 is to y

8/20 = 42/y
8y = 20(42)
y= 20(42)/8
y = ____

If this is a direct relation:
y = kx
20 = 8k
k = 20/8
k = 2.5
y = 2.5x

y = 2.5(42)
y = _____

Note: This should be the same answer as the proportion gave.

Then of course, there is the question of whether you are trying to
find a geometric or arithmetic series or sequence with a pattern ....
Thus, Andy C's response.

Deffense [45]4 years ago

6 0

20/8 = 2.5

20 * 2.5 = 50

x = 8 * 2.5

y = 20 * 2.5

When x = 20, y = 50

You might be interested in

1 1/5 · x/3 = 9/10<br> solve for x

riadik2000 [5.3K]

The value of x in the equation 1 1/5 - x/3 = 9/10 is 9/10

<h3>Fraction</h3>

1 1/5 - x/3 = 9/10

- x/3 = 9/10 - 1 1/5

- x/3 = 9/10 - 6/5

-x/3 = 9-12 / 10

-x/3 = -3/10

divide both sides by - 1/3

x = -3/10 ÷ - 1/3

= -3/10 × -3/1

x = 9/10

Learn more about fraction:

brainly.com/question/11562149

#SPJ1

5 0

2 years ago

Calculate the distance between (5, 3) and (-1, 6). Round your answer to the nearest tenth if necessary. (One place after the dec

rusak2 [61]

Answer:

${xy}^{2} = {6}^{2} + {3}^{2} =45 \\ xy = \sqrt{45} = 6.71$

sorry but I am not sure if this is right :(

6 0

4 years ago

How do you solve this?

liberstina [14]

Answer:

The answer is

Step-by-step explanation:

To solve the expression , use the rules of indices

Since the bases are the same and are multiplying we add the exponents

That's

<h3> ${a}^{x} \times {a}^{y} \times {a}^{z} = {a}^{x + y + z}$ </h3>

So we have

We have the final answer as

Hope this helps you

3 0

4 years ago

When y=-2, what kind of line does it have horizontal or vertical

Rashid [163]

Answer: Horizontal

Step-by-step explanation: The equation <em>y = -2</em> can be thought of as y = 0x - 2. So our line has a slope of 0 and a y-intercept of -2.

To graph it, we start with the y-intercept, down 2 units on the y-axis. Now, if the slope of a line is 0, then the line must be flat or horizontal.

So we just draw a horizontal line through the y-intercept of -2.

In fact, when the equation of any line reads y = a number, it's graph will always be a horizontal line. For example, y = 3, y = -10, y = -8 and so on.

Image provided below.

8 0

3 years ago

Review the expression below -2(a+b-5)+3(-5a+2b)+b(6a+b-8)

Oduvanchick [21]

Answer:

6ab + b^2 - 17a - 4b + 10

Step-by-step explanation:

-2(a+b-5)+3(-5a+2b)+b(6a+b-8)

Now we break the parenthesis. To break that, we multiply each of the value inside the parenthesis by the adjacent number. That is, for the first part of the expression, we multiply by -2, then by 3, and then by b.

Algebraic Operations need to be considered:

[ (-) x (-) = (+); (-) x (+) = (-)]

= [-(2*a) + (-2*b) - (-2*5)] + [3*(-5a) + (3*2b)] + [(b*6a) + (b*b) - (b*8)]

= -2a - 2b +10 -15a + 6b + 6ab + b^2 - 8b

Now, we will make the adjustment by the similarity value.

= - 2a - 15a - 2b + 6b - 8b + 6ab + b^2 + 10

= - 17a - 4b + 6ab + b^2 + 10

= 6ab + b^2 - 17a - 4b + 10

Therefore, the answer of the expression is = 6ab + b^2 - 17a - 4b + 10

6 0

3 years ago