(2 + 3i) + (4 - 6i) equal?
Answers
Answer:
Yes indeed, at least I'm pretty sure.
Step-by-step explanation:
4 is half of 2, and 3 is half of 6. you could write them as equal, just like 1/2 and 2/4 fractions.
Answer:
6-3i
Step-by-step explanation:
First, you need to get rid of perenthesis. Use destributuve property to do so.
Then, add the add the same types of integers(whole numbers and numbers with variables)
after that, you get your answer!
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The mean income per person in the United States is $41,500, and the distribution of incomes follows a normal distribution. A random sample of 10 residents of Wilmington, Delaware, had a mean of $47,500 with a standard deviation of $10,600. At the .01 level of significance, is that enough evidence to conclude that residents of Wilmington, Delaware, have more income than the national average? (a) State the null hypothesis and the alternate hypothesis. H0: ? ? H1: ? > (b) State the decision rule for .01 significance level. (Round your answer to 3 decimal places.) Reject H0 if t > (c) Compute the value of the test statistic. (Round your answer to 2 decimal places.) Value of the test statistic (d) Is there enough evidence to substantiate that residents of Wilmington, Delaware have more income than the national average at the .01 significance level?
O B. Y= 2x – 9
O C. y² = x - 2
O D. x² + y² = 9
Answers
the answer is B -- no matter the x factor y should be single
Answers
Answer:
Elga is 40
Step-by-step explanation:
I'll gladly answer..The question asks elga's age
35 + 40 = 75
and Alvin is 35
Answers
Explanation:
3 can go into 3x one time.
3 can go into 21 seven times.
Therefore when factorized it is written as:
3 (x + 7)
Answer:
3 (x + 7)
Step-by-step explanation:
3 can go into 3x one time.
3 can go into 21 seven times.
Therefore when factorized it is written as:
3 (x + 7)
Answers
Answer:
-120/119
Step-by-step explanation:
cos α = -5/13 = adj/hyp
using Pythagoras theorem
hypotenuse ² = opposite² + adjacent ²
13² =opp²+ (-5)²
169 = opp² + 25
169-25 = 144 = opp²
opp = √144 = 12
sinα = opp/hyp = -12/13
sin β = -12/13
tan(α+β) = (tanα + tanβ)/ (1-tanαtanβ)
cos α = -5/13
sinα = 12/13
tanα= sinα/cosα = 12/13 / -5/13 = 12/-5 = -12/5
sin β = -12/13
cos β = 5/13
tan β = sinβ/cosβ = -12/13 / 5/13 = -12/5
tan(α+β) = (tanα + tanβ)/ (1-tanαtanβ)
tanα = -12/5
tanβ= -12/5
tan(α+β) = (tanα + tanβ)/ (1-tanαtanβ) = (-12/5+(-12/5))/(1-(-12/5)(-12/5))
(-12/5+(-12/5)) = -12-12/5 = -24/5
(1-(-12/5)(-12/5)) = 1-(144/25) = (25-144)/25 = 119/25
tan(α+β) = (tanα + tanβ)/ (1-tanαtanβ) = (-12/5+(-12/5))/(1-(-12/5)(-12/5)) =-24/5/119/25 = -24/5 x 25/119 = -24x5/119 = -120/119
Answers
Answer:
B. 3x + y = 4
Step-by-step explanation:
y = -3x + 4
Check:
3x + y = 4
-3x -3x
y = -3x + 4
Answer:
It is B
Step-by-step explanation:
This is because if you use the point (1,1) for example then both x and y are 1.
1 X 3 = 3 and 3 + 1 = 4.
Answers
Answer:
c =9.6
Step-by-step explanation:
Answer:
c = 9.6
Step-by-step explanation:
Let's look at our equation; - 4c - 9.6 + 5c = 0. Now we need to collect the like terms which are -4c and 5c.
- 4c - 9.6 + 5c = 0
5c - 4c - 9.6 = 0
We get: c - 9.6 = 0
Now we will add 9.6 on each side to see what c is equal to.
c - 9.6 = 0
+9.6 +9.6
c = 9.6
Yay! We got our answer! Nice job everyone!