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ValentinkaMS [17]
3 years ago
5

Can someone PLEASEEEE help me with this I don’t understand how to do it

Mathematics
1 answer:
bekas [8.4K]3 years ago
4 0

So based on the theorem about vertical angles are congruent it is safe to assume that:

6y - 27 = 105 degrees

and

12x + 15 = 75 degrees

And solve it out for x and y

6y - 27 = 105

6y = 132

y = 22

12x + 15 = 75

12x = 60

x = 5

You could plug the x and y values in to check if it makes sense

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Describe the end behavior of the function. f(x)=x^3+11x^2+35x+30
Lelechka [254]
To determine end behavior, we only have to look at the leading term.

First, the leading term is positive, so we won't have to negate anything.

The leading term has a power that is odd.

Since the exponent is odd, this means that the function goes to positive infinity as x goes to positive infinity.

This also means that the function goes to negative infinity as x goes to negative infinity.

Those are the end behaviors.

Have an awesome day! :)
4 0
3 years ago
In Saudi Arabia it takes 20 kursh to equal 1 riyal.
Ulleksa [173]
The answer to (b) is 800
6 0
3 years ago
Which summation formula represents the series below?
Ber [7]

Answer:

Step-by-step explanation:

The summation formula (  arithmetic sequence when the first terme is : A1 = 13

and the coomo diff is d= -4

Sn = n/2(A1 +An)

An = A1+(n-1)d

An = 13 +(n-1)(-4)

An = -4n +17

Sn = n/2(13+17-4n) = n/2(30-4n)

Sn = -2n² +15n

in this exercice : n =4      S4 = -2(4)² +15(4) = -32+60 = 28

verify : 13 + 9 + 5 + 1 =28   ......right

8 0
3 years ago
How to solve this problem?
valentinak56 [21]

Very nice handwriting but the math and English are confusing.

Let's assume we're told

\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2

The subscript is important.

I think we're told the similar sum with 11 gives the smallest possible value for the sum. This is a rather cagey way of telling us 11 is the mean of the nine points. The mean is the number which minimizes the sum of squared deviations.

\displaystyle 45 = \sum_{i=1}^9 (x_i - 10)^2 = \sum x_i^2 - 20 \sum x_i + 9(100)

\displaystyle  \sum x_i^2=  20 \sum x_i  - 900

If 11 is the mean, the sum of the points is 9(11)=99.

\displaystyle  \sum x_i^2=  20 (99)  - 900 = 1080

Answer: 1080

6 0
3 years ago
Add the two expressions. 6q + 1 and q + 11 Enter your answer in the box.
Vanyuwa [196]
If you have to add them these means there is no equal sing meaning you dont have to find q just add them and thats it, so add common like terms which are 6q and q and 1 and 11 to get 7q+12

Hope this helps
5 0
3 years ago
Read 2 more answers
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