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Llana [10]
3 years ago
7

Geometry help!! Find x and y.

Mathematics
2 answers:
MrRa [10]3 years ago
6 0
The last answer is correct
x= 45 degrees
y= 10.9sqrt2
svetoff [14.1K]3 years ago
5 0

Answer:D x=45° y=10.9√2

Step-by-step explanation:

In a right angle were two sides are equal, two remaining angles add up to 90. So it is 90/2 which is 45°

Y²=10.9²+10.9²

Y=15.41

Or y = 10.9√2

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If a gambler places a bet on the number 7 in​ roulette, he or she has a​ 1/38 probability of winning.
SCORPION-xisa [38]
A) The mean would be 1.842 and the standard deviation would be 1.339.
b) It would not be unusually low.

Explanation
a) This can be modeled as a binomial distribution, since there are two outcomes (7 or not 7), the events are independent (getting a 7 on one spin does not influence the chance of a 7 on the next spin) and there are a fixed number of trials (70).  In a binomial distribution, the mean is given by n*p, where n is the number of trials and p is the probability.

μ=n*p=70*(1/38) = 1.842.

The standard deviation of a binomial distribution is given by
σ=√(n*p*(1-p))=√(70(1/38)(37/38)=1.339.

b) To determine if this is unusually low, we find the probability:
_nC_k\times p^n\times (1-p)^{k-n}
\\
\\=_{70}C_0\times (\frac{1}{38})^0\times \frac{37}{38}^{70}
\\
\\=0.15

Since this is not below 0.05, we do not consider this unusual.
3 0
4 years ago
9.6x-15.4=-4.3x+26.3
AlekseyPX

<u>Solve for x:</u>

Add 4.3x on both sides so that the variable can be on one side.

9.6x - 15.4 = -4.3x + 26.3

+4.3x            +4.3x

Add 15.4 on both sides so that the whole number stays on one side separate from the variable.

13.9x - 15.4 = 26.3

         +15.4   +15.4

Divide both sides by 13.9.

13.9x = 41.7

-------     -----

13.9       13.9

Now you get a solution of:

x = 3

<u>Check:</u>

9.6(3) - 15.4 = -4.3(3) + 26.3

28.8 - 15.4 = -12.9 + 26.3

13.4 = 13.4

       

8 0
3 years ago
50 points please hELP URGENT
tatuchka [14]

Answer:

The 1st problem is C. 212.79 The 2nd problem is 1 3/5 The 3rd problem is 3.68

Step-by-step explanation:

Explanation for problem 1 l times w = area

Explanation for problem 2 change to decimals multiply w times l change back to fraction

Explanation for problem 3 multiply l times w

7 0
4 years ago
Read 2 more answers
I’m doing decimals, and I need help on problem two a-c thank you! (Need answer ASAP)
Evgesh-ka [11]

A) 0.9 miles

B) 0.54 miles

C) 1.44 miles

8 0
4 years ago
Read 2 more answers
Tim solved a subtraction problem. Write a number sentence to show the problem and answer. Tell how you got your answer. tim's an
Igoryamba

Answer:

<em>Problem with the subtraction is </em><em>950 - 863 = 87.</em>

Step-by-step explanation:

Now let us suppose Tim began at number 863 and finished at number 950. The numbers 7 + 30 + 50, or 87 were added.

He later discovered that 863 + 87= 950.

<em>Therefore the problem with the subtraction is 950 - 863 = 87.</em>

7 0
3 years ago
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