The angles of a triangles are x°, 3x° and 30°. When asked to solve for x, Alvi shows the work in post-it A below. Brian shows the work in post-it B below. Who is correct and why? Why mistake did the incorrect person make?
that is the pic for post it a.
the post it b said
x + 3x + 30 = 180
4x + 30 = 180
4x = 150
x = 37.5
Answers
Answer:
See explanation
Step-by-step explanation:
OK. Alvi is incorrect because he didn't add the measures of all 3 angles of the triangle, whereas Brian did. So, Brian is correct and Alvi needs to work on that kind of problem.
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answer this mannnn i need hemo
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a is to the right of the positive number 1 on the number line. Subtracting 1 from a will give a result that is still to the right of zero, which means a positive number.
Aaron answered 7 out of 12 questions correctly on his last English quiz. Find his grade
to the nearest whole percent.
Answers
which would give you 0.58
so that’s 58%
Answer:
Step-by-step explanation:
58%
7/12 into a percentage
Can someone plz help me
Answers
the area is 254.34 sq. ft.
Answer:
254.34 ft²
Step-by-step explanation:
diameter = 18 feet
radius = 18/2 = 9 feet
Area = pi x r²
= pi x 9²
= pi x 81
= 254.34 ft²
What is the perimeter of the composite figure?
Enter your answer in the box.
perimeter = yd
Answers
Answer:
what
Step-by-step explanation:
for your answer of this question
perimeter =sum of all side.
sorry I am unable to find perimeter without figure.
Which function is represented by this graph?
A: f(x)=|x+7| - 3
B: f(x) = |x - 7| - 3
C: f(x) = |x + 3| - 7
D: f(x) = |x - 3| - 7
Answers
Answer: B
Step-by-step explanation: B
B :)
Help plsss
Calculate the area
Answers
Answer:
140 feet squared
Step-by-step explanation:
Let's do this step by step. First, let's find the area of the rectangle, which is 8 times 10. It equals 80. Next, do the trangle. 6 times 10 is 60. So, 60 plus 80 equals 140.
Answer:
area of rectangle =L*B
8*10=80ft^2
area of triangle=1/2b*h
h is 8 ft
1/2*6*8
3*8
24ft^2
total area is 80+24
104ft^2
nearest tenth = 100 ft^2
can someone please answer i will mark brainliest
Answers
b) 120
c) the donations are decreasing as years increase
Answer:
a. 2007
b. 120,000
c. the amount of money raised each year is decreasing
Step-by-step explanation:
sorry if im wrong just pay very close attention to the graph
What is 5x+24=134 thank you so mich have a wonderful day
Answers
Answer:
x = 22
Step-by-step explanation:
5x + 24 = 134
134 - 24 = 110
110 / 5 = 22
x = 22
Plane tickets to Chicago usually cost $120. On a travel deal website, you scored a coupon for 35% off. Your budget for the trip allows you to spend a hundred dollars on a ticket; can you go?
Answers
Answer: yes it’s 78$
Step-by-step explanation: The difference is 42.00
what's the seventh term
1,2,3,4,5,.....
Answers
Answer:
understand
Step-by-step explanation:
hope it's helpful for you
Plzzzz help Lia brought 21 shirts and plants. Her total was $357. Pants cost $25 each, and shirts cost $14.50 each. How many of each item did she buy?
I will give you brainliest and 15 points
Answers
Answer:
she brought 21 shirts and 2 pants
Step-by-step explanation:
shirts
21× 14.50 = 304.5
357- 304.5 = 52.5
pants
52.5 ÷ 25 = 2.1
Which of the following is an equation of a line that is parallel to one whose equation is y = 5x - 3?
Answers
Pls help math problem
Answers
Answer:
angle plm+angle lpm+angle pml=180°[by angle sum property]
21°+angle lpm+38°=180°
59°+ lpm=180°
lpm=180°-59°
lpm=121°
lpm+npl=180°[by limear pair]
121°+npl=180°
npl=180°-121°
npl=59°
I WILL GIVE BRAINLIEST!!!
Answers
Answer:
Step-by-step explanation:
Triangle DEF is similar to triangle D'E'F'.Triangle D E F is rotated about point F and is shrunk to form triangle D prime E prime F prime. Which similarity transformation could map △DEF to △D'E'F'? dilation and reflection dilation and translation rotation and dilation rotation and reflection
Answers
Answer:
The answer is "Rotation and dilation".
Step-by-step explanation:
The rotation is a spatial movement, which maintains at least one stage. The dilation of a transition affects a figure's dimensions. The center, as well as a scale factor k, are required Which meaning k determines if the expansion is an expansion or a decrease, therefore the above choice is correct because it just rotated and dilated from its original form.
Answer:
A i think
Step-by-step explanation:
What is the expression?
Answers
Answer:
12(2r + 3) is the completed form.
Kara donated 28 books to the book drive. Shawn donated some books. Kara donated 4 times as many books as Shawn.
What you have to do to solve the question:
Draw a diagram to represent Kara and Shawn's books, then solve how many books Shawn donated. can you draw it in a 4th grade way cuz im in 4th grade thank you.!
Answers
Answer:
i dont know how to make diagram for it but
Step-by-step explanation:
shawn donated 7 books
Find the location of the center of a circle if the endpoints of the diameter are at (-10,
-5) and (8,4).
Answers
Answer:
(- 1, - [tex]\frac{1}{2}[/tex] )
Step-by-step explanation:
The centre is located at the midpoint of the diameter.
Using the midpoint formula , then
centre = [tex]\frac{-10+8}{2}[/tex], [tex]\frac{-5+4}{2}[/tex] ) = ( [tex]\frac{-2}{2}[/tex], [tex]\frac{-1}{2}[/tex] ) = (- 1, - [tex]\frac{1}{2}[/tex] )
dennis had four children. Each child had three kids.
Answers
Answer: ok lol so what is you question
Step-by-step explanation:
1) How many fourths are in one whole?
2) How many eighths are in one whole?
3) How many thirds are in one whole?
PLEASE HELP ASAP
Answers
Answer:
4 fourths are in one whole
8 eighths are in one whole
and 3 thirds are in one whole
Step-by-step explanation:
Can someone help me and give an explanation
Answers
Two triangles: left triangle with y degrees and 40 degrees and right triangle with x degrees.
40 degrees from the left triangle, when adding with the unknown angle of the right triangle, is equal to 180 degrees. Adding left triangle's (third) undetermined angle and x degrees angle (the other same angle), is equal to 90 degrees. The right triangle is an isosceles triangle, meaning two equal angles, and one of them is x degrees. Thus, the other same angle is also x degrees.----------------------------------------------------------------------------------------------------------
1) Subtract 180 - 40 = 140 degrees. 140 degrees is the unknown angle of right triangle.
2) 140 + x + x = 180 (equation)
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----------------------------------------------------------------------------------------------------------
1) With knowledge of x degrees being 20 degrees, the other same angle is 20 degrees, too.
2) Subtract 90 - 20 = 70 degrees. 70 degrees is the (third) undetermined angle
of left triangle.
2) 70 + 40 + y = 180
110 + y = 180y = 180 - 110y = 70 degreesANSWER: y = 70 DEGREES
----------------------------------------------------------------------------------------------------------
Whew. Hope this helps you out, and let me know asap if you're confused on any part.
What should be true in order for a scatter plot to show that a linear fit may be appropriate for a data set?
O The points should form an upward curve.
O The points should be scattered randomly.
O The points should appear to lie generally along a line.
O The points should form one line above the x-axis and another below it.
Answers
On a scatter plot, the points are randomly placed around the graph. The correct option is B.
What is a scatter plot?A scatter plot is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are coded, one additional variable can be displayed.
A scatter (XY) plot is a vertical data visualization method for displaying the relationship between two sets of data. It is a graphical display of data that consists of a collection of points plotted in a two- or three-dimensional plane.
The locations of the points in a scatter plot are chosen at random. The best choice is B.
To know more about scatter plots follow
https://brainly.com/question/6592115
#SPJ6
Can someone help me and leave a description of how to do the problem? I need help asap!
Answers
Answer:
Step-by-step explanation:
One year, the population of a city was 335,000. Several years later it was 314,900. Find the percent decrease.
Answers
Please help ASAP I’m really confused please help!!!
Answers
Answer:
top right pls give brainliest
Step-by-step explanation:
PLZ HELP THIS IS TIMED;((((((
Answers
Answer:
34
Step-by-step explanation:
Diameter is twice length of radius
Answer:
Diameter=34 cm
D.
Step-by-step explanation:
Diameter=radius*2
17*2=34 cm
can someone help pls
Answers
Answer:
the answer is 216 sq cm.
Step-by-step explanation:
Do 12×14=168. Then 12×8=96. Then 96/2=48. Then add 168+48=216.
Answer:
216
Step-by-step explanation:
12x 14=168
8x12=96
96/2=48
168+48=216
Select the expression that can be used to find the volume of this rectangular prism. A. ( 6 × 3 ) + 15 = 33 i n . 3 (6×3)+15=33 in.3 B. ( 3 × 15 ) + 6 = 51 i n . 3 (3×15)+6=51 in.3 C. ( 3 × 6 ) + ( 3 × 15 ) = 810 i n . 3 (3×6)+(3×15)=810 in.3 D. ( 3 × 6 ) × 15 = 270 i n . 3
Answers
Answer:
D
Step-by-step explanation:
(3x6)x15=270 in
the volume formula is base times width times height.
Answer:
D
Step-by-step explanation:
i took the quiz
The length of a rectangle is 4 times the width, w. Which expression represent the perimeter of the rectangle
Answers
Answer:
10w
Step-by-step explanation:
→ Work out the length
4 × w = 4w
→ State width
w
→ Find perimeter
4w + 4w + w + w = 10w
The daily advertising revenue (in dollars) for a local newspaper is given by the function R(t) = -18t2 + 720t – 103, where t is number of years that the paper has been in production. What is the daily advertising revenue after the paper has been in business for 15 years?
Answers
Answer:
6647
Step-by-step explanation:
The computation of the advertising revenue for 15 years is shown below:
Given that
r(t) = -18t^2 + 720t - 103
where
t = number of years = 15
now put the value of t in the above equation
= -18(15)^2 + 720(15) - 103
= -4050 + 10,800 - 103
= 6647