Help please.
Simplify: 2 + 3i / 4 + 2i
Answer:
○ [tex]\displaystyle \frac{7 + 4i}{10}[/tex]
Step-by-step explanation:
[tex]\displaystyle \frac{2 + 3i}{4 + 2i} → \frac{2 + 3i[4 - 2i]}{4 + 2i[4 - 2i]} = \frac{14 + 8i}{20} = \boxed{\frac{7}{10} + \frac{2}{5}i}[/tex]
When dividing complex numbers, multiply the denominatour and numeratour by the conjugate of the denominatour. Then simply towards the end.
* Here is something you should know:
[tex]\displaystyle \sqrt{-1} = i \\ -1 = i^2 \\ -i = i^3 \\ 1 = i^4\: [every\:multiple\:of\:four][/tex]
I am joyous to assist you at any time.
what is the commutative property in "r+v"
PLEASE ANSWER QUICKLY if you can
Answer:
[tex]we \: know \: commutative \: prop \\ \: x + y = y + x \\ then \: r + v = v + r \\ thank \: you[/tex]
Find the value of A, if ∛500 × A =10
Answer:
A = 10 / 500 ^ (1/3)
A = 10 / 7.9370052598
A = 1.2599210499
Step-by-step explanation:
Simplify. (4x^2 - 2x) (-3x^2 - 4x^2 +1)
A) -12x^5 - 10x^4 + 8x^3 + 4x^2 -2x
B) -12x^5 -22x^4 - 8x^3 + 4x^2 - 2x
C) 12x^5 - 10x^4 +8x^3 + 4x^2 -2x
D) 12x^5 - 22x^4 - 8x^3 + 4x^2 - 2x
Answer: Is the equation enered correctly?
1. The second term, (-3x^2-4x^2+1) is the same as (-7x^2 + 1)
2. I don't see how the answer could contain an x^5 term. The largest I see from the information is x^4
Step-by-step explanation:
solutions to the quadratic equation x^2+3x-28=0
Answer:
look on the graph
Step-by-step explanation:
the solutions are x = -7 and x=4
Answer:
x = -7 ; x=4
Step-by-step explanation:
The easiest way to solve this would be using the quadratic formula, so let's go ahead with that :)
[tex]x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\x=\frac{-3\pm \sqrt{3^2-4\cdot \:1\cdot \left(-28\right)}}{2\cdot 1}\\x=\frac{-3\pm \sqrt{121} }{2} \\\\x=\frac{-3\pm 11}{2} \\\\x=\frac{-3-11}{2} , x=\frac{-3+11}{2} \\x=-7, x=4[/tex]
Create two equivalent ratios for 3/5
Answer:
its equivalents can be 3/5*2 =6/10 = > 6:103/5×2=6/10=>6:10
second equivalent is 3/5*3=9/15= > 9:153/5×3=9/15=>9:15
Answer:
30/50, 6/10, 15/25, 300/500
actually as a ratio it should be:
30:50 , 6 : 10, 15:25, 300:500
Step-by-step explanation:
17 students on the math team want to raise 483.62 to buy practice books they have already raised 218.25 if each students raises the same amount how much more money must each student raise
483.62 - 218.25 = 265.37
265.37 / 17 = 15.61
Each student should raise 15.61.
Hope this helps.
solve for X...........
Answer: First Choice. no solution
Step-by-step explanation:
Given
5 (x + 1) ≤ 5x + 3
Expand parentheses and apply the distributive property
5x + 5 ≤ 5x + 3
Subtract 5x on both sides
5x + 5 - 5x ≤ 5x + 3 - 5x
5 ≤ 3
5 ≤ 3 is not true, therefore, there is no solution.
Hope this helps!! :)
Please let me know if you have any questions
simplify:
3/2 x 5/3 ÷ (-2+7)
Answer:
-1/2
Step-by-step explanation:
3/2 x 5/3 ÷ (-2+7)
=> 3/2 x 5/3 ÷ (-5)
=> 3/2 x 5/3 x (-1/5)
=> -1/2
factorize 6(a+1)²+4(a+1)
Answer:
[tex]2(a + 1) \times (3a + 5)[/tex]
Step-by-step explanation:
[tex]6(a + 1 {)}^{2} + 4(a + 1)[/tex]
➡️ [tex]2(a + 1) \times (3(a + 1) + 2)[/tex]
➡️ [tex]2(a + 1) \times (3a + 3 + 2)[/tex]
➡️ [tex]2(a + 1) \times (3a + 5)[/tex]
f(x) = 1/x; Find f (1/10)
Answer:
f(1/10)=10
Step-by-step explanation:
f(x) = 1/x
f (1/10)=1/(1/10)=1·(10/1)=10
4/5 as an equivalent fraction in 3 different forms.
Answer:
Equivalent fraction of ⅘:
[tex] \frac{4}{5} = \frac{8}{10} = \frac{12}{15} = \frac{16}{20} [/tex]
It is angle measure please help
Opposite angles are equal
[tex]\\ \rm\longmapsto m+357=4m+6[/tex]
[tex]\\ \rm\longmapsto 357-6=4m-m[/tex]
[tex]\\ \rm\longmapsto 3m=351[/tex]
[tex]\\ \rm\longmapsto m=\dfrac{351}{3}[/tex]
[tex]\\ \rm\longmapsto m=117[/tex]
70410539 in standard form!
70,410,539 in standard form is 7.0410539 × 10^8
The price of a share of stock changed by – $19.50 over a 5-day period. What was the average daily.
change in the price of a share of the stock?
Answer:
-19.5/5 = 3.9 so answer is $3.9 per day
Write 4 2/5 as an improper fraction
22/5
Explanation-
First, multiply 4x5, Then you get the product 20. With that 20, add with 2, so, 20+2=22. Now, place denominator as it is, then write 22 as numerator. So you get the answer as 22/5.
Working-
4×5=20
→ 20+2=22
→ 22
→ 22/5
PLEASE HELP GIVIBG BRAINIEST AWNSER WORTH 32 POINTS
A cell phone company offers two different monthly plans.
Plan A costs a flat rate of $0.10 per minute for all calls. Plan B costs $29.99 for
the first 500 minutes and $0.08 for each additional minute. Which plan is less
costly if a person uses 750 minutes per month? Explain.
Answer:
The Best is B = 44.985
Step-by-step explanation:
(A)First thing is that 0.10 times 750 is 75$
(B)but the 29.99 divided buy 500 equal 0.05998.
then you multiplier by 750 which equal 44.985.
this is the best way I hope this helps :)
(−2x + 8) + (−8x^2− 8x)
Answer:
-8x^2 -10x + 8
Step-by-step explanation:
there is no multiplying just adding
How many quarts of water should be added to 6
quarts of 80% antifreeze solution to dilute it down
to 30%?
Answer:
Step-by-step explanation:
Evaluate the expression, given functions f and h:
f(x) = 3x − 1,
h(x) = −2x2 + 3x − 2.
f
7
3
− h(−2)
Katie is sending flowers to her friend for her birthday. The florist is selling lilies for $0.60 each and the delivery fee is $7.50. She has $16.50 to spend on the flowers. Write the equation to solve this.
Answer
16.50=0.6l+7.50
Step-by-step explanation:
L is for the amount of lillies
Can you write - 14 as a fraction?
Answer:
-14/1 or 14/-1
Step-by-step explanation:
The fraction for 14 is 14/1
to make it negative, just add a negative sign for numerator or denominator.
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
2 times a number is 12.
How do you right that in equation form
Answer:
2 * x = 12
Step-by-step explanation:
Answer:
2x = 12
Step-by-step explanation:
let the number be x then 2 times the number is 2x. so
2x = 12 ← in equation form
2 = 2.27 - m/4
I am so bad at math, lol! ^^ HELP ME PWEASE!
Answer:
m = 1.08
Step-by-step explanation:
Subtract 2.27 from both sides.2 - 2.27 = -m/4
Simplify 2 - 2.27 to -0.27.-0.27 = -m/4
Multiply both sides by 4-0.27 × 4 = -m
Simplify -0.27 × 4 to -1.08.-1.08 = -m
Multiply both sides by -1 (-m is also known as -1)1.08 =m
Answer:
m = 1.08
Step-by-step explanation:
Basically, we can start off by finding the difference between 2 and 2.27(which is 0.27). Then we can see that 0.27 is equal to m/4. Since 0.27*4=1.08, we can see that m=1.08.
WILL GIVE BRAINLIEST TO WHOEVER CAN EXPLAIN:
True or False-in scientific notation when you move the decimal point left is it positive.
Answer:
false.
Step-by-step explanation:
just cause you move a decimal point to the left dosent mean its positive.
4. Express the following rational number in its lowest form :
) − 60/72
) − 24/36
)91/364
Answer:
-60/72 = -5/6
-24/36 = -2/3
91/364 = 45/182
Is the expression 2•4 x equal to the expression 8x? Explain your answer
Answer : Yes
Step-by-step explanation:
Answer:
[tex]true[/tex]
Step-by-step explanation:
Simplify the expression:
[tex]2 \times 4x[/tex]
Multiply the monomials:
[tex]8x[/tex]
Check equivalency:
[tex] \frac{8x}{8x} [/tex]
Check equivalency:
[tex]true[/tex]
Write an algebraic expression for the following phrase: 3 more than twice a number O 3x + 2 O3+2+ x 02x3 2x+3
Answer:
2x+3
Step-by-step explanation:
2x is twice a number and +3 is three more than that number.
Estimate the sales tax and final cost of a book that costs $12.95 with a sales tax
of 6%.
Step-by-step explanation:
1.06 × 12.95
13.727
which is 13.73 to find the sales tax subtract it from the original
12.95 - 13.73
which is about 28 cents or 0.28
Write a word problem that could be solved by the equation in problem 8 .
3 1/2 [tex]3 1/2 divided by 7/8= 7/2*8/7= 56/14 =4[/tex]
The word problem is " In a class there are 8 boys and these are 2/3rd parts of total students. How many students are there".
The given expression is 8÷2/3
We need write a word problem which is solved by the above expression.
Word problem : In a class there are 8 boys and these are 2/3rd parts of total students. How many students are there.
Solution
[tex]x[/tex]* × 2/3 =8
Divide both sides by 2/3.
x=8/2/3
x= 8×3 / 2
x= 12
Therefore, the total number of students is 12.
I WILL GIVE 50 POINTS (WOW IKR 50) TO PEOPLE WHO GET THIS RIGHT. NO SCAMMING PLEASE
Answer:
232 units
Step by step explanation