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blondinia [14]
2 years ago
6

Can anyone help. Got set this as homework and don’t understand anything

Mathematics
1 answer:
Vitek1552 [10]2 years ago
5 0
That square in a means that it’s 90 degrees and b is 70. Well it says that ab = bc. And ab together is 90+70 which is 160. A straight line is 180 in total so to figure that other side of b out do 180-70 which is 110. So now you have 110, and to match ab you need 50 more degrees for bc. Therefore c is 50 degrees
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Evaluate u + xy , for u = 2, x = 9, and y = 6.
Makovka662 [10]

Answer:

56

Step-by-step explanation:

After inserting the given values, u + xy becomes (2) + (9)(6), or 2 + 54, or 56.

3 0
3 years ago
Read 2 more answers
If the candidate only wants a 0.2% margin of error at a 95% confidence level, what size of sample is needed?
musickatia [10]

Answer:

n = 22

Step-by-step explanation:

Using

n = p(1-p)(Zc/E)²

From table E = 0.2 while p= 0.37

So substituting

We have n= 22.4

Thats a sample size of approximately 22

3 0
3 years ago
What is the GCF of 81 and 36?<br> What is the LCM of 4 and 9?
Mila [183]
The question "What is the LCM and GCF of 36 and 81?" can be split into two questions: "What is the LCM of 36 and 81?" and "What is the GCF of 36 and 81?"

In the question "What is the LCM and GCF of 36 and 81?", LCM is the abbreviation of Least Common Multiple and GCF is the abbreviation of Greatest Common Factor.

To find the LCM, we first list the multiples of 36 and 81 and then we find the smallest multiple they have in common. To find the multiples of any number, you simply multiply the number by 1, then by 2, then by 3 and so on. Here is the beginning list of multiples of 36 and 81:

Multiples of 36: 36, 72, 108, 144, 180, 216, etc.

Multiples of 81: 81, 162, 243, 324, 405, 486, etc.

The least multiple on the two lists that they have in common is the LCM of 36 and 81. Therefore, the LCM of 36 and 81 is 324.
4 0
3 years ago
2(4x+3)&gt;-10 or -5x-15&gt;5
bezimeni [28]
I don’t really understand but this are the answer for both the first one: x>-2 second: x<-2
8 0
3 years ago
URGENT
ludmilkaskok [199]

Answer:

99.7%

Step-by-step explanation:

the standard deviation is 4 minuet but  there is always outliers so thats  why its not 100% of the time and the minutes are  coverd  by the deviation.  

6 0
3 years ago
Read 2 more answers
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