Answer:
<B = 70°
Step-by-step explanation:
First we need to find x, lets plugin these two equations.
2x - 30 = x + 20
Then find like terms
2x = x + 50 =
x = 50
Then we plugin 50 for x
2(50) - 30 =
100 - 30 = 70
<B = 70°
Hi!
The Triangle Angle Sum Theorem states that the sum of the interior angles in all triangles will always be 180 degrees.
We can set up an equation with the given information:
40 + (2x - 30) + (x + 20) = 180
Remove parentheses:
40 + 2x - 30 + x + 20 = 180
Combine like terms:
30 + 3x = 180
Subtract 30 from both sides:
3x = 150
Divide both sides by 3:
x = 50
Now, the problem wants us to solve for angle B.
Angle B is (2x - 30) degrees. We know the value of x, so we just have to substitute:
(2x - 30)
(2(50) - 30)
100 - 30
70
Therefore, angle B is 70 degrees.
HELP PLEASE
Leigh bought a conical candle wax mold. The height of the mold is 16.5 inches and the radius of the inside of the top of the conical
mold is 2.4 inches. She fills the mold completely with candle wax so that it is level with the top of the conical mold.
Using 3.14 for , approximately how much candle wax can the conical mold hold?
A. 41.45 cubic inches
B. 124.34 cubic inches
C. 99.48 cubic inches
D. 43.41 cubic inches
Answer:
Formula for volume of cone;
V = 1/3π[tex]r^{2}[/tex]h
Plug in what you know:-
V = 1/3π[tex]r^{2}[/tex]
will be
V = 1/3(3.14) · 2.4^2 · 16.5
Simplify and solve,
V = 1/3(3.14) · 5.76 · 16.5
V = 1.05 · 5.76 · 16.5
V = 6.05 · 16.5
V = 99.825, your answer is C; 99.48 cubic inches.
It is predicted that by 2050, there will be 10^10 people living on Earth. At that time, it is predicted there will be approximately 10^12 trees. How many trees will there be for each person?
Answer:
100 trees per person
Step-by-step explanation:
10^12 trees / 10^10 persons = 10^(12-10) = 10^2 trees/person
Answer:
Step-by-step explanation:
Givens
There are 10^12 trees
There are 10^10 people
Solution
Number of trees / person = Number of trees / Number of people = 10^12/10^10= 10^(12 - 10) = 10^2 = 100
There will be 100 trees / every person on the planet.
I’ll give brainliest
Which equations are true for x = –2 and x = 2? Select two options
x2 – 4 = 0
x2 = –4
3x2 + 12 = 0
4x2 = 16
2(x – 2)2 = 0
Answer:
x^2 – 4 = 0 AND 4x^2 = 16
Step-by-step explanation:
a) x^2 – 4 = 0 --> (x + 2)(x - 2)=0 --> x= -2 AND x= +2
b) x^2 = -4 doesn't have any solution in the real numbers.
c) 3x^2 +12 = 0 -->(divide by 3)--> x^2 +4 =0 ---> x^2 = -4 as b)
d) 4x^2 = 16 -->(divide by 4)--> x^2 = 4 --> x^2 -4 = 0 as a)
e) 2(x -2)^2 =0 -->(divide by 2)--> (x-2)^2 =0 --> one solution that is x=+2
the figure is cut into 12 equal pieces. shade 2/3 of the figure
Answer:
So you shade 8 parts in and the remaining is 4 so that the other 1/3 of 2/3
Answer
so basically you're asking shade 2/3 out of 12 equal pieces
so lets do 12 divided by 3 witch is four
so there would be 3 parts that have 4 pieces, and 4 times two is eight, so shade in 8 pieces :0 :)
what is the volume of the prism below?
Step-by-step explanation:
1×2×7/4
= 14/4 = 3.5
choice 2
Which of the following points is the reflection of (8, -5) in the y-axis?
A. (8, 5)
C. (-8, 5)
B. (-5, 8)
D. (-8, -5)
Answer:
D
Step-by-step explanation:
When you flip a point around the y axis the x value is inverted since the point is moved to the opposite side across the y axis.
PLEASE HELP ASAPP!! WILL MARK BRAINLIEST (NO LINKS)
Find the axis of symmetry and
the
vertex of the graph of y = 3x^2
-18x + 17
Answer:
vertex: (3, -10)
axis of symmetry: x = 3
Step-by-step explanation:
Vertex form of a quadratic equation: [tex]y=a(x-h)^2+k[/tex]
(where (h, k) is the vertex)
Rewrite the given equation in vertex form by completing the square.
Given equation:
[tex]y=3x^2-18x+17[/tex]
Add 10 to both sides:
[tex]y+10=3x^2-18x+27[/tex]
Factor RHS:
[tex]y+10=3(x^2-6x+9)[/tex]
[tex]y+10=3(x-3)^2[/tex]
Subtract 10 from both sides:
[tex]y=3(x-3)^2-10[/tex]
Therefore, the vertex is (3, -10)
The axis of symmetry is the x-value of the vertex.
Therefore, the axis of symmetry is x = 3.
Answer:
Axis of symmetry: x = 3
Vertex: (3, -10)
Step-by-step explanation:
y = 3x² - 18x + 17
Axis of symmetry formula: x = [tex]\sf{\frac{-b}{2a}}[/tex]
a = 3b = -18[tex]\sf x={\frac{-b}{2a}}\implies \textsf{Substitute -18 for b and 3 for a}\\\\\sf\ x={\frac{-(-18)}{2(3)}}\implies\textsf{multiplying 2 negatives makes a positive}\\\\\sf\ x={\frac{18}{6}}\implies \textsf{divide}\\\\\ \boxed{\sf x=3}\implies \textsf{axis of symmetry}[/tex]
Now, substitute 3 for x in your original equation to find the value of y:
y = 3x² - 18x + 17
y = 3(3)² - 18(3) + 17 <== exponents first
y = 3(9) - 54 + 17 <== multiply
y = 27 - 54 + 17 <== subtract
y = -27 + 17 <== add
y = -10
Vertex: (3, -10)
Hope this helps!
The following is a list of wait times, in minutes, at the DMV. is the mean, median, or mode likely to be the best measure of the center for the data set? 31, 32, 31, 34, 30, 30, 31, 31, 30, 31
For the given data set 31, 32, 31, 34, 30, 30, 31, 31, 30, 31, median is the best measure of the center.
The given data set is 31, 32, 31, 34, 30, 30, 31, 31, 30, 31.
In this data set, the best measure of the center would likely be the median.
The data set is relatively small and seems to have a repeated value (30), which could potentially skew the mean.
The median, on the other hand, would provide a more representative measure of the central tendency as it is not affected by outliers or repeated values as much as the mean or mode.
Hence, median is the best measure of the center for the data set.
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An equation is shown below:
5x + 3(x − 5) = 6x + 2x − 15
Part A: Solve the equation and write the number of solutions. Show all the steps. (6 points)
Part B: Name one property you used to solve this equation. (4 points)
Your answer:
Answer:
infinity
Step-by-step explanation:
the distributive property is used when 3 is multiplied to x and 5 so it becomes 3x-15 and you combine like terms after that.
A box is 36 inches long 18 inches wide and 6 inches deep. How many cubic feet are in the box?
The amount of cubic feet in the box = volume = 2.25 cubic feet.
What is the Volume of a Box?Volume of a box is the amount of cubic feet in the box which is calculated as: V = (length)(width)(height).
Given the following:
Length = 36 inchesWidth = 18 inchesHeight = 6 inchesVolume = (36)(18)(6)
Volume = 3,888 cubic inches.
Convert to 3,888 cu. in. to cu. ft. [1 cu. ft. = 1728 cu. in.]
3,888/1728 = 2.25 cubic feet.
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Answer:
Step-by-step explanation:
2.25
60 units needed 14 units per case
what you mean bro??
PLEASEEE HELP 100 POINTSSS AND BRAINLIEST!!!! THANKSSSSS <33
Answer:
The answer would be a
Step-by-step explanation:
An acute angle is an angle with two similar sides an obtuse angel is an very wide trianglee
Step-by-step explanation:
please mark me as brainlest
I WILL GIVE YOU 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER
Step-by-step explanation:
We know that sum of angles of a triangle are equal to 180⁰
Therefore
29⁰+68⁰+x⁰=180⁰
97⁰+x⁰=180⁰
x⁰=180-97=83⁰
Hence x=83⁰
Also Side Note: x⁰=y⁰=83⁰(reason=vertically opposite angles)
I hope it helped you
Pls help with math pls will give brainlest due soon
Help help help help help hep math
[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]
The Correct choice is Yes
The shown graph is of a linear function that is in the form of straight line, having fixed slope (rate).
What one is it? Pls help
Answer:
It is A
Step-by-step explanation:
The denominator , 'x' cannot be 0 <=====undefined
but it CAN be any other number
domain ( the 'x' values' ) can be all numbers except 0
The range will be all numbers except zero also....there is no way to make the y = 9/x eqaul to 0 .
your answer is going to be a
on a rainy day, parker and his mom watched movies for 2 2/3 hours. they played games for 1 1/4 times as long as they watched movies. how many hours did parker and his mom play games
Answer:
3 1/3 hours
Step-by-step explanation:
if you use cross multiplication and multiply 1 by 2 2/3 you get 2 2/3 and if you multiply 1/4 by 2 2/3 add them together and you'll get 3 1/3 hours or also known as 3 hours and 20 minutes
PLEASE HELP ME!! I NEED HELP WITH THIS!!
Answer:
D
Step-by-step explanation:
To reflect over the Y axis, the X values of each coordinate must be made into opposites. So a coordinate with the form (x,y) will become (-x,y) when reflected across the Y axis, which is needed here.
1
Select the correct answer.
Which graph shows a quadratic equation with complex roots?
Answer:
C (the bottom one)
Step-by-step explanation:
B (the top one) has roots/solutions — as in, it crosses the x-axis.
C doesn't have roots, and therefore doesn't have normal solutions, instead it has "complex" roots which require the use of imaginary numbers: [tex]i[/tex]
George and his friends rode motorcycles all day on Saturday. He made a table that showed the number of gallons of gas remaining at the end of each hour.
Answer:
negative correlation
Step-by-step explanation:
his fuel keeps decreasing every time he uses his motorcycle
A teacher assigns 10 questions for homework and wants to randomly pick 3 questions to be graded. Which of the
following procedures would produce a simple random sample?
O Assign the homework questions the numbers 1-10. Use a random number table to select the first three number
between 1 and 10. These represent the questions that will be graded,
• Assign the homework queations the numbers 0 to 9. Use a random number table to select the 1o first three numbe
between 0 and 9. These represent the questions that will be graded.,
Assign the homework questions the numbers 01-10. Use a random number table to select the first three 2-digit 1O
numbers between 01 and 10. These represent the questions that will be graded,
Assign the homework questions the numbers 0-9. Use a random number table to select the first three 1o unique
numbers between 0 and 9. These represent the questions that will be graded.
Answer:
Assign the homework questions the numbers 0–9. Use a random number table to select the first three unique numbers between 0 and 9. These represent the questions that will be graded.
Step-by-step explanation:
D.
Whats the diameter of the sphere
Answer:
Here is answer my monkey brotheren
Step-by-step explanation:
In how many ways can the word "calculus" be arrange so that two L's do not come together?
Count the total number of permutations of the word "calculus": there are 8 letters, hence 8! = 40,320 total permutations.
Count the number of permutations in which the two L's occur next to each other. Effectively we're now talking about words consisting of 7 letters, of which there are 7! = 5,040.
It follows that there are
8! - 7! = 35,280
words in which two L's do not appear next to each other.
HDTV screens usually have a width to height ratio of 16:9 which screen dimentions are in the same propeortion
Answer:
4 feet by 3 feet
Step-by-step explanation:
width-to -height ratio of 16:9
Let analyse all possible answers:
4 feet by 3 feet
16 divided by 4 is the same as 9 divided by 3 => it is true
28 inches by 21 inches
16 divided by 28 is different as 9 divided by 21 => it is wrong
48 centimeters by 27 centimeters
16 divided by 48 is different as 9 divided by 27 => it is wrong
26 inches by 19 inches
16 divided by 26 is different as 9 divided by 219=> it is wrong
I choose A.
Hope it will find you well.
Stan’s Car Rental charges $35 per day plus $0.25 per mile. Denise wants to rent one of Stan’s cars, keeping the total cost of the rental to no more than $55.
What is the greatest number of miles Denise can drive the car to stay within her budget?
write an equation in factored form that has (-7,0) & (-10,0) as its zeroes and passed through the point (-5,20)
Equation
Step-by-step explanation:
so its step by step
mitch must pack 88 pencils into 9 boxes.Each box must contain an equal number of pencils.How many pencils does he have left over
A] 3
B] 5
C]7
D] 8
Answer:
c
Step-by-step explanation:
i took the test
What is the area of this quadrilateral?
2 ft
3 ft
8 ft 8 ft
3 ft
2 ft
Check the picture below.
PLEASE HELP ILL GIVE U BRAINLY IF U GET IT RIGHT AND EXPLAIN WHY TOO !!
Camille has 6 water balloons. Each is filled with 4 fluid ounces of water . Bibi has 5 balloons. Each is filled with 1 cup of water . Whose balloons contain the most water?
Answer:
Bibi
Step-by-step explanation:
1 ounce=.125cup(1/8)
Camille:
6*4=28(28 fluid ounces or3.5cups)
Bibi: 5*1 cups=5 cups.