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slava [35]
3 years ago
9

Find the unknown measure of the rectangle perimeter = 54 width =

Mathematics
1 answer:
valkas [14]3 years ago
8 0
So first u do 54=20+20+A+A a is a variable that we r using for unknown side 
than 40=40+2A 
14=2A
A=7 i hope u know what i am trying to explain if u have any question please tell me =)
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Suppose that the handedness of the last fifteen U.S. presidents is as follows:
ladessa [460]

Answer:

(C) No, since 0.47 is not equal to 0.13.

Step-by-step explanation:

We have two events, A and B.

I am going to say that P(A) is the probability that a president is left-handed.

I am going to say that P(B) is the probability that a president is a Democrat.

P(B/A) is the probability that the probability that the president is a Democrat, given that he is left-handed.

If P(B/A) = P(A), then the events are independent.

In this problem, we have that P(B/A) = 0.13 and P(A) = 0.47. So, "being left-handed" is not independent of "being a Democrat" and the correct answer is

(C) No, since 0.47 is not equal to 0.13.

3 0
3 years ago
What is the equation of a line with slope -1/2 passing through (-5,4)?
elena-14-01-66 [18.8K]
For this question you need to use what's called point-slope form. It's named this way because you can use it if you have both the slope and a point at which the line passes through. That said, the equation is as follows:

y - y1 = m(x - x1)

Both y1 and x1 represent the y and x coordinates you are given in the question. Also, m represents the slope of the line that you are given. Knowing this, our equation now looks like this:

y - 4 = -0.5(x - (-5))

And now simplify:

y - 4 = -0.5(x + 5)
y - 4 = -0.5x - 2.5

y = -0.5x + 1.5
4 0
3 years ago
If 9 times a number is added to 18, the result is -27.<br> Find the number.
denis23 [38]

Answer:

-5

Step-by-step explanation:

9x +18=-27

9x = -27 -18

9x =-45

x = -45/9

x = -5

x= the number

3 0
3 years ago
The 100th pyramidal number is 338,350. that would make quite a stack of basketballs! What number must you add to get 338,350 to
Liono4ka [1.6K]
Lets look a pyramid numbers
we have
1st=1
2nd=2
3rd=6
we notice that we jsut add the previous number on
so 1st=1
2nd=1+1
3rd=1+2+3
4th=1+2+3+4
so therefor to get from 100th to 101th, just add 101
5 0
3 years ago
18 ≥ -2x <br> i cant solve this
Bumek [7]

Answer:

x\geq -9

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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