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MArishka [77]
3 years ago
5

The function f (x) varies directly with x and f (x) = 160 when x = 40.

Mathematics
1 answer:
Scilla [17]3 years ago
6 0

Answer:

it is 32.

I know this because it was in my last year syllabus

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Which equation could be used to find the length of the hypotenuse?
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The fourth one I think hope it helps
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3 years ago
Solve the linear system of equations using the linear combination method.<br><br> {8a−4b=205a−8b=62
11Alexandr11 [23.1K]
Sorry I am a little late...

a = -2

b = -9

Here is how to solve the problem. 

First thing I did was multiply the first equation by -2 so that we can eliminate the the b. After you multiply it by -2, your new equation is -16a + 8b = -40. 

You leave the second equation alone and all you do is combine like terms. So -16a+5a is -11. And you eliminate the b. Then you're going to do -40+62 which is 22. So it's -11a=22 and then you have to solve for a. What I did was I multiplied the whole thing by minus to turn the a positive. So then it's 11a=-22. Pretty easy, the final step is to simplify. -22/11 is -2. ;D 

So there you have your first answer. 

a = -2 

Now we're going to use the first answer to help us find b. 

For the second equation, all you're going to do is plug in that a. 

5 (-2)-8b=62 

-10 - 8b = 62

Now we move the -10 to the other side...

-8b = 62 + 10 

-8b = 72

Multiply the whole thing by negative once again to turn the b positive.

Now we have 8b = -72 

The final step is to simplify. -72/11 = -9

b = -9 

Hope this makes sense! Also I had the same question on my test and I got it right. :)

6 0
3 years ago
List the element of following set?​
Mrac [35]

Answer:

Below.

Step-by-step explanation:

a) A  = {1, 2, 5, 10}

b) B = {1, 3, 5, 15}

c) A∩B = {1, 5}        ( elements common to  A and B).

d) A∪B = {1, 2, 3, 5, 10, 15}      (total elements in A and B).

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Lady_Fox [76]

Answer: 18 = 36.

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levacccp [35]
Labeled p is cluster point t is an outlier
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3 years ago
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