Step-by-step explanation:
(1-3i)-(2-i)=
1-2-3i+i=
-1-2i
1-2-3i+i
= -1-2i
Step-by-step explanation:
I simplified it in a simple way by arranging like terms together and did the calculation. Here the like term of 1 is -2 and for -3i it's i. so 1-2= -1 and -3i+i= -2i according to integers rule.
What is the difference of 12-5i and -3 + 4i
What is an equation of the line that is parallel to y = 9- 4x and passes through (0, 7)
Answer:
y = -4x + 7
Step-by-step explanation:
Since they are parallel they must have the same gradient which is -4
[tex]y = mx + c[/tex]
m = -4
x = 0
y = 7
7 = -4 × 0 + c
c = 7
[tex]y = - 4x + 7[/tex]
HELP!!!
This is a geometry question!
Please give reasoning with your answer!
I can and will mark a "real" answer brainliest!
Step-by-step explanation:
For angle BDG
The common angles are: Angle DBG, Angle DGB
The common sides are: DG, GB, BD
And for angle AEF
The common angles are: Angle EFA, Angle EAF
The common sides are: EF, FA, AE
FOR the BGD triangle, all sides are connected together, so, all of them are common and the angles as well
And the same exact thing with triangle AEF also
Hope it helps!
Question 13(Multiple Choice Worth 1 points) (8.03 LC) A set of equations is given below: Equation C: y = 7x + 12 Equation D: y = 7x + 2 How many solutions are there to the given set of equations? One solution Two solutions Infinitely many solutions No solution
Answer: I believe it would be no solution
Step-by-step explanation
Answer:
No solutions
Step-by-step explanation:
y=7x+12;y=7x+2
Step: Solvey=7x+12for y:
y=7x+12
Step: Substitute7x+12foryiny=7x+2:
y=7x+2
7x+12=7x+2
7x+12+−7x=7x+2+−7x(Add -7x to both sides)
12=2
12+−12=2+−12(Add -12 to both sides)
0=−10
Each sheep has 4 legs and each chicken has 2 legs. If a farm boy counts 50 heads and 140 feet, how many sheep are there?
1. 30 sheep
2. 20 sheep
3. 10 sheep
Answer:
20
Step-by-step explanation:
H+S=50
2H+4S=140
4H+4S=200
4H+4S=200-
2H+ 4S =140
2H=60
H=30
50-30=20
Given:
Each sheep has 4 legs and a chicken has 2 legs.
A farm boy counts total heads = 50
And number of legs = 140
To Find:
Number of sheep.
Solution:
Let the number of sheep in the farm = s
And the number of chicken in the farm = h
If the total number of heads = 50
s + h = 50 ------- (1)
If the total number of the legs = 140
Number of legs of 's' sheep = 4s
Number of legs of 'h' chicken = 2h
Therefore, 4s + 2h = 140
2s + h = 70 -------(2)
Subtract equation (1) from equation (2),
(2s + h) - (s + h) = 70 - 50
s = 20
Therefore, 20 sheep are in the farm.
Learn more to solve the equations,
https://brainly.com/question/16566965
-4(b+3)-12=2b-16+5b tell each property used in each step to solve the equation
Answer:
b= - 8/11
Step-by-step explanation:
-4b-24=7b-16
-4b-24+24=7b-16+24
-4b=7b+8
-4b-7b=7b+8-7b
-11b=8
-11b/-11 = 8/-11
b= - 8/11
The purchase price of a camcorder is $520. What is the total price if the sales tax rate is 9.5%?
Answer:
4940
Step-by-step explanation:
well you simply just multiply 9.5 by 520
Students on an academic team took a test to enter a math competition. They could take the test twice. Some students improved their score, while others did not. The table shows the change in score for each student. Which student had the greatest overall change in his or her score?
Student Test Score Change
Joe –2
Nivea 3
Juanita 4
Li –3
Juanita had the largest change. (+4 points)
Pleaseeee helppppp!!!!
2\3-4x+7/2= -9x+5/6
solve
Answer:
I think its -2/3
Step-by-step explanation:
Is there enough information given to prove that the following pairs of triangles are congruent explain why or why not if not describe the information could be added to guarantee congruence
consider the equation 8x+4y=64
where does the graphs intersect the x-axis ?
provide the coordinate point below ( , )
what is 0.4repeating as a fraction?
Answer:
11/25
Step-by-step explanation:
Determine whether the sum or product will be rational or irrational.
1. 10 + 0.01
Rational / Irrational
2. 12 + 0.05
Rational / Irrational
3. 15 +0.07
Rational / Irrational
4. 17 + 0.02
Rational / Irrational
5. 77 + 8
Rational / Irrational
Answer:
1. Rational
2. Rational
3. Rational
4. Rational
5.Rational
Step-by-step explanation:
Hey You seem don't understand the Rational numbers and Irrational numbers
I will give you the example here
Irrational numbers are the numbers that has des keep going forever, like Pi,
will but keep going forever and has NO PARTERN. if it was like 1.4141414141414141414141414..... thats not a Irational numbers
where Rational number are like: 1,3,-1,7/10......
how would i solve (4x 3 + 7y 3z 4) 2 ?
Answer:
=(4x*3+7z*3z*4)*2
=(12x +84z²) *2
ans =24x+168z²
Step-by-step explanation:
ur question is wrong i guess check it plzz
What is the value of the expression 5y2 + 4x when x = 2.5 and y = 3?
Find the slope from the graph below.
Answer:
X=-2 (The slope is - 2/1)
If h(x)=x2−3x+5, what is h(−3)?
23
5
-13
20
(a) Books to authors
(b) SIM cards to cell phone numbers
(c) True or False questions to answers
(d) Books to its ISBN
are one to one fuction?
Answer:Letter D.
Step-by-step explanation:
is (-3,1) run over rise or rise over run?
Answer: i'm pretty sure coordinates are always rise over run but i'm not sure i would look it up
Step-by-step explanation:
PLEASE HELP WILL GIVE BRAINLIEST
Answer:
The answer is (5,-6)
Step-by-step explanation:
it's the only point that's both on the line and and further away from point A
Savannah paid $100 to join a music club. She then pays $1.00 per music download. Dominic joined a club for $25 but pays $2.50 per download. Determine the
number of downloads when the cost will be the same
Answer:
It would take 10 downloads
Step-by-step explanation:
Answer:
32 for Dominic and 5 for Savannah
Step-by-step explanation:
You can figure this out by first determining how many downloads Dominic has to make in order to have the total price equal to what Savannah paid just to join the club.
So Savannah paid $100 to join. Dominic only paid $25. So Dominic can spend $75 for downloads before he even gets up to what Savannah paid. Now you can figure out that it will take 30 downloads at $2.50 each to get to that $75.
You could say that Dominic is now equal to Savannah with both spending $100. Dominic would have made 30 downloads and Savannah would have 0. But I believe they want you to go a step further.
So now you just need to look at how many more downloads Dominic would have to make to get to an even full dollar amount. One more download would take him up to $102.50. A second additional download would take him to $105. Savannah would then only have 5 downloads for a total cost of $105 and Dominic would now have a total of 32 downloads for a total of $105.
quick math question, please help^^
Answer:
x= 81
Step-by-step explanation:
see attached the solution
4.64 × 10^2 in standard form
Answer:
464
Step-by-step explanation:
Hope This Helps!
Find the equation of the line
Y= __x + __
Answer:
Step-by-step explanation:
(0, -9) and (3,3)
(3+9)/(3-0) = 12/3 = 4
y + 9 = 4(x - 0)
y + 9 = 4x - 0
y = 4x - 9
draw diagnose AC and BD on parallelogram ABCD. Make a point where the diagonals intersect, and label it E. Measure and record the lengths of the four line segments you just create
Answer:
AE = 2.5
BE = 1.5
CE = 2.5
DE = 1.5
Step-by-step explanation:
it's plato's answer
Answer:
AE = 2.5
BE = 1.5
CE = 2.5
DE = 1.5
Step-by-step explanation:
plato
PEMDAS PLEASE HELPPPP!
Answer:
90xyz ÷xy
input the unknowns
x = 3, y = 5, z = 2
90*3*5*2 ÷ 3*5
2700 ÷ 15 = 180
Just to clarify, PEMDAS, is just an abreviation for:
P - Parentheses
E - Exponents
M - Multiply
D - Divide
A - Add
S - Subtract
These are called order of operations following which part of you're equation you solve first. Hope this helped :)
Select all the ratios that are equivalent to each other
A. 4:7
B. 8:15
C. 16:28
D. 2:3
E. 20:35
Answer: C. 16:28 & E. 20:35
Please mark as brainliest!
Answer:
Option A , Option E and Option C are the same.
Step-by-step explanation:
Option A :
[tex]4:7[/tex]
Can not be simplified further
Option B :
[tex]8:15[/tex]
Can not be simplified further
Option C :
[tex]16:28 \\ = \frac{16}{28} = \frac{4}{7} \\ 4:7[/tex]
Option D :
[tex]2:3[/tex]
Can not be simplified further
Option E :
[tex]20:35 \\ = \frac{4}{7} \\ 4:7[/tex]
Can not be simplified further
In triangle ABC, the measure of angle B is 50 degrees. Select all possible values for the measures of A and C if ABC is an acute triangle. m\angle∠A= 58 degrees; m\angle∠C= 72 degrees m\angle∠A= 100 degrees; m\angle∠C= 30 degrees m\angle∠A= 80 degrees; m\angle∠C= 50 degrees m\angle∠A= 60 degrees; m\angle∠C= 70 degrees m\angle∠A= 90 degrees; m\angle∠C= 40 degrees m\angle∠A= 105 degrees; m\angle∠C= 25 degrees
Answer:
Step-by-step explanation:
Sum of angle in a triangle = 180°
<A+<B+<C = 180
Given <B = 50°
Substituting into the formula
<A+50+<C = 180
<A+<C = 180-50
<A+<C = 130°
Since the ∆ABC is an acute triangle, the angles <A and <C must be angles less than 90° since acute angles are angles less than 90°
The possible values of <A and <C that will be acute and give a sum of 130° are;
∠A= 58° and ∠C= 72°
∠A= 80° and ∠C= 50°
∠A= 60° and ∠C= 70°
You can see that all the Angles are less than 90° and their sum is 130°
The sequence -9,-15,-21,-27 is a
Arithmetic sequence or Geometric sequence
Answer:
Arithmetic sequence
Step-by-step explanation:
It's Arithmetic sequence, because it's basically the list of integers that can be added, or subtracted by a same number every time. So, according to the following sequence shown, it shows that it's subtracting by [tex]6[/tex] every time.
