Summing complex numbers is easy: you just sum the real parts together and the imaginary parts together:
[tex](a+bi)+(c+di)=(a+c)+(b+d)i[/tex]
So, you have
[tex](4 - 2i) + (12 + 7i) = (4+12)+(-2+7)i = 16+5i[/tex]
Round each mixed number to the nearest whole number and then estimate the sum.
12 11/14+ 2 5/7
Answer:
Answer is 10.86
Step-by-step explanation:
12x11/14 + 10/7
=132/14 + 20/14
=152/14
=10.86
12. Find the values of x and y in the diagram below.
Answer:
x = 15
y = 19
The value of the x and y are; 11/6, -5 and 18/4 in the linear equation.
What is linear equation?The definition of a linear equation is an algebraic equation in which each term has an exponent of one and the graphing of the equation results in a straight line.
From the given parameters;
The equations are;
(4y - 18)
(6x - 11)
(x + 5)
Now put all equation equal to zero.
Then;
4y - 18 = 0
y = 18/4
And then;
6x - 11 = 0
x = 11/6
And
x + 5 = 0
x = -5.
Hence, In the linear equation, value of the x and y are 11/6, -5 and 18/4.
Learn more about linear equation here;
brainly.com/question/4074386
#SPJ2
Evaluate this expression for a=2 and b=3. (a+5)-b/b-4+2(b+3)/a
Answer:
16
Step-by-step explanation:
[tex](a+5)-\frac{b}{b-4}+\frac{2(b+3)}{a}\\\\a=2\\\\b=3\\\\(2+5)-\frac{3}{3-4}+\frac{2(3+3)}{2}\\\\=7-\frac{3}{-1}+3+3\\\\=7+3+6\\\\=16[/tex]
Help me out here pleaseeeeeeeee
Answer:
1 1/5
Step-by-step explanation:
1 and 1 fifth as a fraction.
Mai runs around a track at a constant speed of 750 meters in 30 minutes . How many minutes per meter is that? And how many meters can she run in 6 minutes?
Answer:
25 meters per minute
150 in 6 minutes
Step-by-step explanation:
Find the area of the surface generated by revolving the curve about each given axis.
x = 2t, y = 6t, 0 ≤ t ≤ 9
Find the equation of a parabola with a focus at (3,1) and a directrix at y = 3.
Question 5 options:
A)
y = 1∕4(x – 3)2 + 2
B)
y = –1∕4 (x – 3)2 + 3
C)
y = –1∕4 (x – 3)2 + 2
D)
y = 1∕4(x – 3)2 + 3
Answer:
c ) y = –1∕4 (x – 3)2 + 2
Step-by-step explanation:
Answer:
directrix is; y= {-5}
Step-by-step explanation:
Write the expression using exponents.
Answer:
6v^5
Step-by-step explanation:
you would leave the 6 alone. since there is 5 of the same variable, you would put 5 as your exponent
Ayuda por favorrr lo necesito yaa
4÷5/9
pleeeease helpppp
Answer:
36/5 or 7 1/5
Step-by-step explanation:
4 divided by 5/9
4 x 9/5. change the divide to multiply & the fraction to the reciprocal
=36/5 or 7 1/5
identify the slope and y-intercept of the function y=-5x+4 (brainlyest to correct answer)
Answer: A. The slope is -5, and the y-intercept is (0,4)
Step-by-step explanation:
In standard form, a function is written as y = mx + b, where m = slope and b = the y-intercept
With that in mind, the m value is -5 and the b value is 4
Thus, the slope is -5, and the y-intercept is (0,4)
Please help me please!!
Answer:
False
Step-by-step explanation:
2x - y = 0
-2x + 2y = 9
Add the equations.
y = 9
(3, 6) is not a solution because in the solution, y = 9.
Answer: False
Answer:
the answer to question 3 is false, and the answer to question 4 is c. (2, 9)
Step-by-step explanation:
they deleted my answer again, anyways i hope this helps! :D
The diagram below shows the start and finish diagrams of a construction using a compass and straightedge. Which of the following statements are true about this construction? Select all that apply.
Answer: 1st and 4th
Step-by-step explanation:
Answer: The answers are the first and fourth one.
Step-by-step explanation: Because of the rules of linear measures
A number minus 14 is more than 35
Answer:
False, -14 is less that 35
Step-by-step explanation:
Answer:
x-14>35
Step-by-step explanation:
x-14>35
1. Replace "A number " with x
x minus 14 is more than 35
Minus = subtraction
x-14 is more than 35
Is more than translates to the inequality >
x-14>35
Hope this helps plz hit the crown :D
I'M GIVING OUT BRAINEST!!!
Line m has a slope of -5. What is the slope of a line parallel to line m?
Answer: -5
Step-by-step explanation:
parallel lines have equal/same slope
claudia earns overtime pay when she works more then 40 hours in a week how many hours of overtime pay did she work for the week of march 4
Y-5=1/3
Helpppp!!!!!!
Answer:
8
Step-by-step explanation:
5x+2=7x-4 what is x and if you can how you did it
Answer:
x=3
Step-by-step explanation:
2 = 7x−4−5x
2 = 2x−4
2+4 = 2x
6 = 2x
[tex]\frac{6}{2}[/tex] = x
3 = x
x = 3
I WILL GIVE BRAINLEST Simplify 3(12 - 8) + 5. ОА. 32 ОВ. 27 ООО Ос. 33 OD. 17
Answer:
D. 17Step-by-step explanation:
3(12 - 8) + 5
3(4) + 5
12 + 5
17
You are at a European beach with 60 other visitors. 36 of them speak English. If you randomly meet two people on the beach, what is the probability that they both speak English
Answer:
Assuming I'm one of the 36 English speakers and the other 24 speak Spanish for illustration purposes. The problem can be modeled as 59 marbles with 35 E and 24 S marbles as N = 59 possible outcomes = n(E) + n(S) = 35 + 24.
So I reach into the pile of marbles (on the beach) and the probability that it's p(E) = n(E)/N = 35/59 = 0.593220339 when I meet the one person. ANS
I assume I remember that first person; so I remove him from the marbles (by avoiding him on the beach) and now my probability is p(E and E) = n(E)/N * n(E)-1/(N - 1) = 35/59*34/58 = 0.347749854 ANS
Following the same logic p(E and E and E) = 35/59*34/58*33/57 = 0.201328863 ANS
This last one is different from the first three. This one is p(E >= 1|4 attempts). We can trace out a probability tree to identify those branches that contain at least one E event. So:
EEEE p() = 35/59 * 34/58 * 33/57 * 32/56 =
EEES p() = 35/59 * 34/58 * 33/57 * 24/56 =
EESE p() = 35/59 * 34/58 * 24/57 * 33/56 =
ESEE p() = 35/59 * 24/58 * 34/57 * 33/56 =
SEEE p() = 24/59 * 35/58 * 34/57 * 33/56 =
EESS p() = 35/59 * 34/58 * 24/57 * 23/56 =
ESES p() = 35/59 * 24/58 * 34/57 * 23/56 =
SEES
SESE
SSEE
ESSS And so on, but...a big BUT...why do all this when
SESS
SSES
SSSE
SSSS
p(E>=1|4) = 1 - p(S and S and S and S) = 1 - 24/59 * 23/58 * 22/57 * 21/56 = 0.976652619 ANS. In other words we find the probability of not meeting an Englishman and take 1 minus that value to find the probability of meeting at least one.
00
Step-by-step explanation:
A gym owner has some red weights and some purple weights. The red weights are 8 kilograms each, and the purple weights are 3 kilograms each. The owner has 10 weights, and they weigh 55 kilograms in all. How many of each color weight does he have?
Answer:
7 red weights and 2 purple
Step-by-step explanation:
Answer:
5 purple weights and 5 red weights
Step-by-step explanation:
Who knows the answer for this question
Answer: 7
Work: So, the goal is to get z alone, so we are going to add 85 on both sides, cancelling on the side it's currently on. So, the new equation is going to be 25z = 175. Then, to get z even more lonely, we are going to divide 25 on both sides, and again cancelling it on the side it's currently on. So, the answer is z = 7. I hope this helps, and Happy Holidays! :)
hOw dO I rUn??????????????????????????????????????????????
It's like walking but faster, so you go faster like sonic lol.
Simplify: √(√21 -2√7)^2
WILL AWARD BRAINLIEST TO THE CORRECT ANSWER!!
Answer:
Solving the expression: [tex]\sqrt{(\sqrt{21}-2\sqrt{7} )^2}[/tex] we get [tex]\sqrt{21}-2\sqrt{7}[/tex]
Step-by-step explanation:
We need to solve the expression: [tex]\sqrt{(\sqrt{21}-2\sqrt{7} )^2}[/tex]
We know that [tex]\sqrt{x} = x^{\frac{1}{2}}[/tex]
Solving:
[tex]\sqrt{(\sqrt{21}-2\sqrt{7} )^2}\\=((\sqrt{21}-2\sqrt{7} )^2)^\frac{1}{2}[/tex]
We know that [tex](a^2)^\frac{1}{2}=a[/tex]
= [tex]\sqrt{21}-2\sqrt{7}[/tex]
So, solving the expression: [tex]\sqrt{(\sqrt{21}-2\sqrt{7} )^2}[/tex] we get [tex]\sqrt{21}-2\sqrt{7}[/tex]
help i will mark brainly
Answer:
hey i see that you are on nitro type what is your name
the answer is 2/6
Step-by-step explanation:
Answer:
2/5
Step-by-step explanation:
Help me with this question ASAP!!!!!!!!!!!!
Answer:
Yes by AA similarity
Step-by-step explanation:
<ACB is congruent to <ECD by vertical angles, so we have one pair of comgruent angles.
<B is congruent to <CDE because they are both 90 angles, so we have another pair of congruent angles.
Triangle ABC is similar to triangle EDC by AA similarity.
I hope this helps! :)
choose all of the points that are solutions to y = 3x + 2 / 2x - 1.
A.(-2, 4/5)
B.(-1, -5)
C.(0, -2)
D.(0, -2/3)
E.(1, 3/2)
F.(1, 5)
G.(4, 14)
Answer:
a d f g
Step-by-step explanation:
Answer:
its abfg
Step-by-step explanation:
There are 64 species of animals in the metropolitan zoo
5/8 are from North America
1/4 are from Africa
The remaining are from South America
How many species are from South America
Answer:
8 species are from South America
Step-by-step explanation:
In order to find the answer to this, you need to make the denominators of the North American and African species the same.
To do this, multiply 1/4 x 2/2.
You would then get 2/8. This means 2/8 of the species are African
Since you now have the same denominator, add the fractions together, and the total amount of North American and African species is 7/8, leaving 1/8 for the South American species.
You would then divide 64 by 8 to see how much 1/8 is worth in terms of how many species, and would then get 8.
Help in 2 minutes, please
history= 70
total = 400
now
student of history in college = student in history÷ total students of history×100%
= 70/400×100%
= 17.5 %. (A)
Store A sells a watch for $50 and offers a 5% discount Store B sells the same watch for $60 and offers a 20% discount. From which store should you buy your
watch and why? Help please!!
Answer:
You should buy the watch from Store A because it's cheaper
Step-by-step explanation:
Store A sells a watch for $50 with a 5% discount.
Let's calculate the sale price. The 5% discount is
5/100*$50 = $2.50
The sale price is $50 - $2.50 = $47.50
Now for Store B. The price of the watch was $60 with a 20% discount.
Calculate 20% of $60:
20/100*$60 = $12
The sale price is $60 - $12 = $48
Thus, you should buy the watch from Store A because it's cheaper