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meriva
3 years ago
11

If ab =9cm and bc =12 cm which does ac equal

Mathematics
1 answer:
Rama09 [41]3 years ago
5 0
Just add them together
9 + 12 = 21
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HELP PLZZZZZZZ STANDARD FORM
liraira [26]

Answer:

-12n^{2} + 12

Step-by-step explanation:

h(n) = -4n + 4           (h o g) (n)

g(n) =  3n^{2} - 2

-4(3n^{2} - 2) + 4

-12n^{2} + 8 + 4

-12n^{2} + 12

7 0
3 years ago
What does 1/8 + 1/6 equal?​
dedylja [7]

Answer:

7/24

Step-by-step explanation:

1/8 + 1/6

First get a common denominator of 24

1/8 * 3/3 = 3/24

1/6 * 4/4 = 4/24

3/24 + 4/24 = 7/24

8 0
3 years ago
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6 0
3 years ago
In a certain town, 22% of voters favor a given ballot measure. For groups of 21 voters, find the variance for the number who fav
raketka [301]

c. 4.6

       

21 X .22= 4.6

       

Calculating the variance requires finding the product of 21 and 22%. To make this easier we convert 22% into it's decimal form and construct the equation. To back check this answer we can use 10% of 21 voters which equals 2.1% then double that amount to reach 4.2%, knowing that we now have a close approximation of the variance we can eliminate answers a, b, and d, leaving c as the only logical choice.

4 0
3 years ago
Find a function where f(0)=2 and f(1)=2
xenn [34]

Answer:

Do you want to be extremely boring?

Since the value is 2 at both 0 and 1, why not make it so the value is 2 everywhere else?

f(x) = 2 is a valid solution.

Want something more fun? Why not a parabola? f(x)= ax^2+bx+c.

At this point you have three parameters to play with, and from the fact that f(0)=2 we can already fix one of them, in particular c=2. At this point I would recommend picking an easy value for one of the two, let's say a= 1 (or even a=-1, it will just flip everything upside down) and find out b accordingly:f(1)=2 \rightarrow 1^2+b+2=2 \rightarrow b=-1

Our function becomes

f(x) = x^2-x+2

Notice that it works even by switching sign in the first two terms: f(x) = -x^2+x+2

Want something even more creative? Try playing with a cosine tweaking it's amplitude and frequency so that it's period goes to 1 and it's amplitude gets to 2: f(x) = A cos (kx)

Since cosine is bound between -1 and 1, in order to reach the maximum at 2 we need A= 2, and at that point the first condition is guaranteed; using the second to find k we get 2= 2 cos (k1) = cos k = 1 \rightarrow k = 2\pi

f(x) = 2cos(2\pi x)

Or how about a sine wave that oscillates around 2? with a similar reasoning you get

f(x)= 2+sin(2\pi x)

Sky is the limit.

8 0
2 years ago
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