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agasfer [191]
3 years ago
13

What is an expression for the calculation 2/3 times the sum of 2/8 and 4/8?

Mathematics
1 answer:
Naily [24]3 years ago
8 0
2/3((2/8)+(4/8))
For the 2/8 + 4/8 you wouldn't need the extra set of parentheses, but for I typed it to not confuse you.

So 2/3 times the sum of 2/8 and 4/8. Get the sum of 2/8 and 4/8 (which is
((2/8)+(4/8)) and then add 2/3 outside to parentheses to indicate that you are multiplying them.
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My first expression answer is y=5 -2x How do I plug it into x-y=1 ?? The Y
Lemur [1.5K]

Answer:

All you need to do is make sure the first expression is solved for y (which it is), and then substitute it into the second expression in place of any occurrences of y:

given the second expression:

x - y = 1

We'll replace y with it's value in the first expression:

x - (y) = 1

x - (5 - 2x) = 1

Now we can expand the resulting equation:

x - 5 + 2x = 1

So <em>neither</em> of the answers provided are correct.

You can then solve for x:

x - 5 + 2x = 1

x - 5 + 5 + 2x = 1 + 5

x + 2x = 6

3x = 6

3x/3 = 6/3

x = 2

After that, you can find y by plugging x into either of the two original equations:

y = 5 - 2x

y = 5 - 2(2)

y = 5 - 4

y = 1

8 0
2 years ago
What is the result of a dilation of scale factor 3 centered at the origin of the line 2y + 3x=10
romanna [79]

Answer:

(10, 15)

Step-by-step explanation:

To get the origin of the equation 2y+3x = 10, we need to get the x and y-intercept of the line.

x-intercept occurs at y = 0

If y = 0

2(0)+3x =10

3x =10

x = 10/3

x = 1.33

y-intercept occurs at x = 0

If x = 0

2y+3(0) =10

2y =10

y = 10/2

y = 5

Hence the coordinate at the origin is (10/3, 5). If this coordinate is dilated by 3, the required coordinate will be at (10/3*3, 5*3) = (10, 15)

Hence the required coordinate is (10, 15)

7 0
3 years ago
4 bracket 3x minus 2 bracket
Goshia [24]

Answer:

4[3x-2]

Step-by-step explanation: 12x-8

Hope this helped out

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at the zoo the polar bears are fed 0.77 bucket of fish day. The penguins are fed 0.8 that amount. How much of a bucket are the p
sukhopar [10]
The answer is 0.616 bucket of fish.  
3 0
3 years ago
Lamont designs a survey of town residents in an attempt to predict who will be elected mayor. He chooses his sample of 500 peopl
Natali [406]

Answer:

B

Step-by-step explanation:

I took the test

4 0
3 years ago
Read 2 more answers
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