I need help with these questions (see image). Please show workings.
Question : Findthe size of the angles marked by letters in the following diagram.
See image for diagram.
Answers
Answer:
Angles r and 110 are opposite angles of a cyclic quadrilateral.Opposite angles of a cyclic quadrilateral are supplementary.Central angle is twice the size of the inscribed angle (if same arc intercepted).As per above properties we have:
r + 110 = 180°r = 70°and
s = 2r = 2*70° = 140°Related Questions
Ella ran 6 times around her school building. then she ran 4 miles home. Her phone told her she ran 7 miles total. Which equation represents this situation A. 6+4x=7 B. 6x+4=7 C. 6(x+4)=7
Answers
Find the median for the following set of numbers.
4, 18, 3, 29, 23
0 29
3
18
04
Answers
Answer:
3 is the median
Step-by-step explanation:
the median is just the middle number, the number in the middle of a sequence
3 is perfectly in the middle
hope this helps chu <3
Can someone plz help me plzzzz I’m being timed
Answers
Answer:
1 = 19. 3 = 21. 7 = 25
Step-by-step explanation:
w = t + 18
19 = 1 + 18
21 = 3 + 18
25 = 7 + 18
Anyone know this ???
Answers
Answer:
The answer is D
Step-by-step explanation:
Have a great day
PLS HELP: SEVENTH GRADE MATH
Answers
Answer:x=15
Step-by-step explanation:3x15=45
45+45=90
45 divided by 3 equals 15
Rope packaged in 80-foot lengths
must be cut into 12-foot pieces to
do a certain job. If 28 such pieces
of rope are needed for the job, how
many packages of rope are needed?
(A) 4
(B) 5
(C) 6
(D) 7
(E) 28
Answers
Answer:
it would be 5
Step-by-step explanation:
any of the answer could have really worked (not 4 since that gives you less then what is needed) but in the end it would have been 5 because 5 leaves you with only 5.33 feet of rope left
80* any one of the four numbers (ex: 5) = your answer that you got (ex: 400)
then you divide that number by 28 (ex: 33.33) and if you want to go the extra mile then do the number that you got by dividing 28 minis the number of rope pieces needed
the whole thing >
80* 5 = 400
400/28 = 33.33
33.33- 28 = 5.33
hope this helps! :)
How many moles is 1.50 X 10^23 molecules NaCl ?
Answers
Answer:
One mole NaCI
hope it help :)
19. Mr. Green teaches band, choir, and math. This year, he has 57 students that take at least one of (3 points)
his classes. He teaches band to 25 students. There are 9 students who have Mr. Green for math
and nothing else. Use the Venn diagram below:
Math
7
3
11
17
Band
Choir
How many students take exactly 2 classes with Mr. Green?
Answers
Answer:
The answer is "17 students with Mr. Green take exactly two courses".
Step-by-step explanation:
Following are the calculation to this question:
Alone band 11
Alone chorus 17
Choir and band alone 4
7 Maths alone and the band
Choir and Math alone 6
Chorus and Math Band 3
mathematics alone 9 +11+4+10+6+17 + M = 57
so
2 classes = 4+7+6 = 17
So, there are 17 students with Mr. Green take exactly two courses.
The rules of a contest say that there is a 6% chance of winning a prize. Four hundred people
enter the contest.
How many people will win a prize?
Answers
There are 25 headsets, 8 of them are not working properly. Find the percentage of headsets that are in good quality.
Answers
Answer:
68%
Step-by-step explanation:
Given data
Number of Headset= 25
Number of bad Headset= 8
Percentage of bad Headset= 8/25*100
= 0.32*100
= 32%
Hence the percentage of good Headset is
=100-32
=68%
PLEASE HELP THANK U SO MUCH
Answers
Answer:
Add the area of the rectangle to the area of the triangle.
6 x 7 = 42
3 x 6 x 0.5 = 9
So the area is 42+9=51
Let me know if this helps!
I = $562.50 P = $1500 t= 5 years
What is the annual interest rate
PLZ HELP
Answers
Answer:
interest rate is the higher value
How many degrees is angle A?
Answers
Answer:
128 degrees
Step-by-step explanation:
Answer: 112 degrees
============================================================
Explanation:
If we assume ABCD is a parallelogram, then the adjacent angles are supplementary.
So,
A+D = 180
A+68 = 180
A = 180-68
A = 112
Factoring Explanations Classwork
Directions:
For the following problems, you need to explain what method of factoring you will use and explain all the steps in English words. Do your best to format the math answers. *Some are much easier than others!*
Below are two examples:
Example #1: Factor 18x^2-200y^2 completely.
Answer: For this problem, we will use the difference of squares method.
First, we will factor out the greatest common factor which is 2.
2(9x^2-100y^2 )
Second, we must determine what a and b is.
a=√(〖9x〗^2 )=3x
b=√(〖100y〗^2 )=10y
Third, we put our answer in the form (a+b)(a-b), making sure to include the GCF 2.
Answer: 2(3x+10y)(3x-10y)
Example #2: Factor 2x^2-7x-15 completely.
Answer: For this problem, we will use the X method.
There is no GCF, so we will draw an x and put a*c on top (-30) and b on bottom (-7)
-10 and 3 multiply to get -30 and add to get -7.
Second, we split up the equation to now be this:
2x^2-10x+3x-15
Third, we group it together and factor out the GCF from each group.
(2x^2-10x)+(3x-15)
2x(x-5)+3(x-5)
Fourth and Last, we re-group it together to get our final answer.
Answer: (2x+3)(x-5)
Explain the method used and explain fully how to factor a^2-25
Explain the method used and explain fully how to factor 100-9x^2
Explain the method used and explain fully how to factor 12w^2-300
Explain the method used and explain fully how to factor q^3+125
Explain the method used and explain fully how to factor 27g^3-8f^3
Explain the method used and explain fully how to factor 4xy-14x+16y-56
Explain the method used and explain fully how to factor x^2+13x-30
Explain the method used and explain fully how to factor 9x^2+36
Explain the method used and explain fully how to factor 4x^2+15x+14
Explain the method used and explain fully how to factor 3x^2+15x+18
Answers
Answer: Set your trinomial equal to 160(360), then solve for "x". I think from your instructions that this is what it is asking you to do. But, there is a simpler way.
Step-by-step explanation:
6. Find the constant of variation k for the direct variation.
4x = -y
K = -1
K=-1/4
K=4
K=-4
Answers
Given:
The equation for the direct variation is
[tex]4x=-y[/tex]
To find:
The constant of variation k for the direct variation.
Solution:
If y is directly proportional to x, then
[tex]y\propto x[/tex]
[tex]y=kx[/tex] ...(i)
Where, k is constant of variation or constant of proportionality.
We have,
[tex]4x=-y[/tex]
It can be written as
[tex]-y=4x[/tex]
Multiply both sides by -1.
[tex]y=-4x[/tex] ...(ii)
On comparing (i) and (ii),we get
[tex]k=-4[/tex]
Therefore, the correct option is D.
9. Which
of the following is a proper fraction?
A 12/10
B. 5/4
C.7/10
D.10 1/9
Answers
Answer:
c
Step-by-step explanation:
because in a proper fraction the numerator is less than the denominator
Triangle PQR is similar to triangle XYZ. What is the length of side XZ?
Answers
Answer:
XZ = 13.5 in
Step-by-step explanation:
Since the triangles are similar then the ratios of corresponding sides are equal, that is
[tex]\frac{PR}{XZ}[/tex] = [tex]\frac{QR}{YZ}[/tex] , substitute values
[tex]\frac{9}{XZ}[/tex] = [tex]\frac{6}{9}[/tex] ( cross- multiply )
6XZ = 81 ( divide both sides by 6 )
XZ = 13.5 in
David has already written 16 pages, and he expects to write 0.5 pages for every additional hour spent writing. How many hours will David have to spend writing this week in order to have written a total of 24 pages?
Answers
Answer: 16 hours
Step-by-step explanation: Find the remaining number of pages David must write
24-16=8
Daniel must write 8 more pages
Find how long it takes Daniel to write one page
Since it takes Daniel an hour to write half a page, it takes him two hours to write a full page
Multiply how long one page takes by the remaining number of pages
2 x 8=16
It will take 16 more hours to write the total of 24 pages
2/17=X/9
what does x equal??
Answers
Answer: Multiply to remove the fraction, then set equal to
0
and solve.
Exact Form:
X = 18 /17
Decimal Form:
X = 1.05882352 …
Mixed Number Form:
X = 1 1 /17
2
17
=
X
9
what does
x
equal??
Multiply both sides of the equation by
9
.
2
17
⋅
9
=
X
9
⋅
9
Simplify.
Tap for more steps...
18 /17 = X
Rewrite the equation as
X = 18 /17 .
X = 18 /17
The result can be shown in multiple forms.
Exact Form:
X = 18 /17
Decimal Form:
X = 1.05882352 …
Mixed Number Form:
X = 1 1 /17
Step-by-step explanation:
2/17=X/9
what does x equal??
Carlos and Bonita were just hired at a manufacturing plant. Carlos will earn $12.50 per hour. He will earn a hiring bonus of $300. Bonita will earn $14.50, but she will not get a hiring bonus. After how many hours of working will they earn the same?
Answers
Answer:
after 3 hours
Step-by-step explanation:
An alternating current. I Amperes, is given by i = 10sin2nft.where f is the frequenct in Hertz and t the time in seconds.What is the rate of change of current when t = 20ms given that f = 150 Hzπ
Answers
Answer:
150
Step-by-step explanation:
convert $98.60 to pounds
Answers
Answer:
71.18 pounds
Step-by-step explanation: HOPE THIS HELPS
This data represents the number of books checked out of the school library by five students: 10, 15, 5, 10, 20 Find the mean absolute deviation. FIRST PERSON TO ANSWER GET BRAINLIEST!
Answers
Answer:
the answer is 12
Step-by-step explanation:
you are welcome
Answer:
12......................
4 ? x 1 900 ? = 900 x? x 9 3,600 = ? ? 9 9
Answers
Answer:
Step-by-step explanation:
Pls help ASAP fast ...
Answers
i donk know Step-by-step explanation:
Answer:
Here is your answer
Step-by-step explanation:
through: (0,3), parallel to y= -2x + 4
Answers
y-y₁ = m (x-x₁)
y - 3 = -2 (x-0)
y - 3 = -2x
y = -2x + 3
KHAN ACADEMY TRANSFORMATIONS OF FUNCTIONS
Function F is graphed.
According to the graph, is F even, odd, or neither?
Answers
Answer:
wdym?
Step-by-step explanation:
Answer: odd
Step-by-step explanation: khan academy got it right
I need help on this and the first person who answer correctly gets a BRANLIST
Answers
Hey there!
The answer is A) A(9, 12), B(-12, -15), C(-12, 9)
To dilate using scale factor with given coordinates, we simply multiply the coordinates by the scale factor. Therefore, we multiply each of the coordinates by 3.
A(3, 4) * 3 = A(9, 12)
B(-4, -5) * 3 = B(-12, -15)
C(-4, 3) * 3 = C(-12, 9)
Hope this helps and have a super awesome day! :)
P.S. Let me know if you need any more help! Just comment below :)
ILL MARK AS BRAINLIST IF U GET IT RIGHT it’s khan
Answers
Answer:
5
Step-by-step explanation:
given that x and y are proportional, they can be expressed as y = rx, where r is the proportionality constant. Thus, we can solve for r by doing y/x in any given point.
[tex]\frac{8}{1.6} = \frac{15}{3} = \frac{22}{4.4} = 5[/tex]
Anything to the zero power equals
Answers
Answer:
1
have a great day