Answer:
3) A circle Is a locus of a moving point which moves from equal distance in q fixed path.
(a + b)(a - b) = a^2 - b^2
1. Multiply the numerator and the denominator by the complex conjugate of the denominator.
2. Simplify the results into the real part and the imaginary part.
Divide the complex numbers. Show all work.
Answer:
Step-by-step explanation:
hello : given z = (-6-10i)/(4+7i)
the complex conjugate of the denominator is : 4-7i
1. Multiply the numerator and the denominator by the complex conjugate of the denominator: z = (-6-10i)(4-7i)/(4+7i)(4-7i)
use identity : (a + b)(a - b) = a² - b² calculate the product : (4+7i)(4-7i)
(4+7i)(4-7i) = 4² -(7i)² =16 -49i² =16+49 = 65..... ( i² = -1)
2) Simplify the results calculate the numerator : (-6-10i)(4-7i)
(-6-10i)(4-7i) = -24+42i -40i+70i² = -24+42i -40i-70 .....( i² = -1)
(-6-10i)(4-7i) = -94+2i
now : z = (-94+2i )/65 = (-94/65) +(2/65) i
the real part is : ( -94/65) and the imaginary part is : 2/65
Find the value of x and the length of each chord.
Answer:
-50
Step-by-step explanation:
Two painters can paint a room in 4 hours if they work together. The less experienced painter takes 3 hours more than the more experienced painter to finish the job. How long does it take for the less experienced painter to paint the room individually?
The World Health Organization (WHO) suggests having 23 health-care workers for every 10,000 people. How many health-care workers are needed to meet the suggestion of 250,000 people? Justify your answer using a graph.
Answer:
The correct answer is 575.
Find the perimeter. Simplify your answer.
Please put an actual answer.
Answer:
4p - 2
Step-by-step explanation:
2(p-1) + 2p =
2p -2 +2p =
4p - 2
Of 220 seventh-grade students, 25% earn the Community Service Award. How many students earn the award?
Answer: 55
Step-by-step explanation:
Allison measures some artwork for framing. The first picture is 9 3/4 inches long and the second is 7 1/4 inches long. What is the difference in length of the art?
Answer:
2 2/4
Step-by-step explanation:
Since the first picture is 9 3/4 and the second is 7 1/4. You have to subtract to find the answer.
Ex:
5 - 1 2/4 = ?
First lets turn five in to a fraction 5 -> 5/1
Now lets turn one and a half into an improper fraction 1 2/4 -> 6/4
We can now subtract easily!
Steven bought a watch for $140 and added a 40% markup before reselling.
What was the amount of markup?
Answer:
$196
Step-by-step explanation:
Please help, I will give brainliest to whoever helps!
A bag contains 7 orange marbles and 14 yellow marbles . If a representative sample contains 2 orange marbles then how much yellow marbles would you expect it to contain? explain.
Answer:
The answer is 6 marbels.
Hope this helps!
Solve negative 2 x plus 3 is greater than or equal to negative 3
Answer:equal
Step-by-step explanation:
Answer:
x is less than or equal to 3
Step-by-step explanation:
subtract three from both sides which will give you 2x is greater than or equal to -6. then divide by -2 on both sides to isolate x (dividing by a negative number flips the sign and a negative divided by a negative equals a positive) so then you get x is less than or equal to 3
In the following diagram, medians AD and BE intersect at F. Which of the following segments would not be true
1) ECD~ACB
2) EF= 1/2EB
3) ED||AB
4) the median drawn from C would pass through F
The segment that is false is (2) EF= 1/2EB
The median lines of a triangle always meet at a point.
This means that the line from point C is true (option 4 is true)
The median divides the side lengths of the triangle into equal segments.
However, the centroid at point F do not divide line EB into equal segments
This means that:
The equation EF= 1/2EB is false
Hence, the segment that is false is (2) EF= 1/2EB
Read more about median and centroid at:
https://brainly.com/question/14317682
Question 1 of 10
Which rays form the sides of ZCDE?
C
E
O A. DC
B. CE
C. CD
D. DE
E. ED
F. EC
Answer:
Ray DC and Ray DE
Step-by-step explanation:
What is the approximate volume of the cone below?
7 cm
10 cm
Answer:
183
Step-by-step explanation:
The volume of the cone formula is : [tex]= \pi r^{2} \frac{h}{3}[/tex]
[tex]radius = 10 / 2 = 5[/tex][tex]v= \pi 5^{2} 7/3[/tex]
[tex]\pi 25 * 7/3= \pi * 58.33= 183. 26[/tex]
the approximate answer would be 183 cm
How many pint are in a quart and how many quarts are in a gallon? The whole system (customary units) is confusing to me.
Answer:
1 qrt Equals to 2 pints
1 gallon Equal 4 qrts
I hope you are having an amazing day!
Multiplying and Dividing Rational Expressions.
Answer:
under division
Step-by-step explanation:
a rational number is not defined under division..
What is the sum of 5.3 x 10^5 and 3.8 x 10^4in scientific notation?
Answer:
=5.68×10^5
Step-by-step explanation:
Lu is making a quilt that is 20 squares wide and has 15 rows. The border of the quilt is made by using each toy design equally as often. There are a total of 6 toy designs. Each square can hold one design. How many of each design does she use for the border?
Answer:
Out of 6 designs 4 designs will have 12 repetitions and 2 designs will have 11 repetitions.
Or
On the average each design will be repeated 11.67 times.
Step-by-step explanation:
HEre the width = 20 and length = 15
The perimeter = 2(l+b)
= 2( 20+ 15) = 70
The border of the quilt has 70 squares. Each square can have 1 design and there are 6 designs
Number of repetitions for each design = 70/6= 11. 67
6 designs can have 11 repetitions for 66 boxes= 6 *11= 66
4 squares will be left out. 70-66= 4
4 design can have additional repetition.
Meaning out of 6 designs 4 designs will have 12 repetitions and 2 designs will have 11 repetitions.
Or
On the average each design will be repeated 11.67 times.
I need help with this question!!!!!
John was saving to buy a new pair of Nikes that cost $150. He has already saved $45. How much more does he need to save to buy the Nikes?
Answer:
105
Step-by-step explanation:
Answer:
105$
Step-by-step explanation:
150-45=105
What is a correct way to write the statement, "All dogs are mammals" in conditional form?
All mammals are dogs.
If an animal is a mammal, then it is a dog,
All mammals are not dogs.
If an animal is a dog, then it is a mammal.
Answer:
Step-by-step explanation:
I believe it’s the last one. A conditional statement will have “if”. The second statement doesn’t make sense. The first and third statements aren’t conditional. The 4th or last statement works.
Which of the following are solutions to 2x^2-8x-90
Answer:
2(x-9)(x+5)
Step-by-step explanation:
(15 points) Which expression has a value of 5 x 10^-3
Answer:
Yellow is the answer
Step-by-step explanation:
If you have a new deck of shuffled cards, what is the probability you will choose an ace? (52 cards, no jokers) A) 1 13 B) 1 2 C) 1 4 D) 1 6
Answer:
B 1/2
Step-by-step explanation:
I looked it up.
But I think it'd be C because there would be 4 aces in the deck, and C has 1/4
Answer: 1/13 is the correct answer.
Step-by-step explanation: You put the total amount of aces, which is four, on the top part of your fraction and the total number of 52 cards on the bottom of your fraction. Since four will divide into both numbers, you simplify 4/52 to get 1/13. 4 divided by four is one. 52 divided by 4 is 13. That is how you get your 1/13 from 4/52. Answer was confirmed correct on the test I took. I hope this helps you! Thanks!
what is the equation of the line that passes through (6,5) and (-7,4)
Answer:
y = 1/13 + 59/13
Step-by-step explanation:
y2 - y1 / x2 - x1
4 - 5 / -7 - 6
-1 / -13
1/13
y = 1/13x + b
4 = 1/13(-7) + b
4 = -7/13 + b
59/13 = b
y = 1/13 + 59/13
20 points!!!
What is the energy of a photon emitted with a wavelength of 518 nm?
Answer:
3.84 x 10^-19
Step-by-step explanation:
a93x
Answer:
3.84 x 10^-19
Step-by-step explanation:
Help with A and B? Plz
Answer:
The answer to this question should be A=18.84 and B=28.26
11 points! Will give brainliest!!!!
21 is the right answer.
Mark me the brainliest
Marvin has a coupon the discount is the rental of a full-size car by $25 they decide to buy insurance for each day if the cost is $465 how much days dear well they rent the car right and solve the equation
Answer:
tht hard
Step-by-step explanation:
so i need points
2/3x - 5 = 1/2x - 3
X=
Answer:
x=12
Step-by-step explanation:
[tex]\frac{2}{3}x-5=\frac{1}{2}x-3\\\\\frac{2}{3}x-\frac{1}{2}=-3+5\\\\ \\\frac{4}{6}x-\frac{3}{6}=2\\\\\frac{1}{6}x=2\\ \\x=12[/tex]
Nelson needs to separate 1/2 of medicine into 8 equal cups how much medicine is in each dose
Answer:
1/4 medicine is in each dose