Answer:
4
Step-by-step explanation:
19 = 7 + 3r
12 = 3r
4 = r
Answer:
r = 4
Step-by-step explanation:
19 = 7 - -3r
19 = 7 + 3r
Then you do Inverse Operations So you have to Subtract
19 - 7 = 12
12 = 3r
Then you do Inverse Operation So you have to Divide
12/3 = 4
So
19 = 7 - -3(4)
So Let's Make Sure That It Is Correct
19 = 7 - -3(4)
19 = 7 - -12
19 = 7 + 12
So 4 Is The Correct Answer
SOMEONE PLEASE HELP ME ITS URGENT!!!!
Step-by-step explanation:
i wanna help but i cant see can you copy and paste the question
Answer:
Step-by-step explanation:
y=5x-2
slope of the line is 5 because if we compare to
y=mx+b where m is the slope we see m=5
Points (0,-2), (2,8), (4,18)
slope between the points (0,-2), (2,8)
m=(y2-y1)/(x2-x1) = -2-8/0-2 = -10/-2 = 5
slope between the points (4,18), (2,8)
m=(y2-y1)/(x2-x1) = 18-8/4-2 = 10/2=5
slope between the points (4,18), (0,-2)
m=(y2-y1)/(x2-x1) = 18+2/4-0= 20/4 =5
HELP ME PLEASE HURRY PLS
Answer:
A, no B, no, C, yes
Step-by-step explanation:
A. is not equivalent while b and c are equivalent.
a. isn't equivalent because 3/4 with the denominator of 12 is 9/12. Therefore, 9/12 isn't equal to 10/12.
b. is equivalent because -5/10 is shortened to -1/2. At the same time, -4/8 is also shortened to -1/2. Therefore, it is equivalent.
c. is equivalent as well because 10/8 into a mixed fractions is 1 2/8. Which simplified is equal to 1 1/4. Which, is equivalent to 1 1/4/
Hope this helped.
there are 1700 seats in a theatre. 40% of the tickets to a concert at the theatre are category 1 tickets and the rest are of other categories. The organizer decides to change some tickets from the other categories to category 1. The number of tickets of other categories then become 55%. How many more category 1 tickets are added?
Answer:
255 added
Step-by-step explanation:
1700 x 55% = 935
1700 x 40% = 680
935 - 680 = 255
There are 255 more category of 1 tickets are added.
What is mean by Percentage?
A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
To Calculate the percent of a number , divide the number by whole number and multiply by 100.
Given that;
Total number of seats in a theatre = 1700
And, 40% of the tickets to a concert at the theatre are category 1 tickets and the rest are of other categories.
The organizer decides to change some tickets from the other categories to category 1.
Now,
Number of category 1 tickets = 40% of 1700
= 40/100 x 1700
= 40 x 17
= 680
And, The number of tickets of other categories = 55% of 1700
= 55/100 x 1700
= 55 x 17
= 935
So, Number of added tickets of category 1 = 935 - 680
= 255
Thus, There are 255 more category of 1 tickets are added.
Learn more about the percentage visit:
https://brainly.com/question/24877689
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I NEED HELP ON THIS QUESTION ASAP!!
Answer:
true, true, false, false
Step-by-step explanation:
a. when inside the parallel line it is interior and alternate on the line going through them
b. when outside the parallel line they are exterior amd alternate as the one before.
c. they are on the same side of the line going through the parallel lines.
d. when taking one angle and putting it of the other, its easier to tell if they match/ are the same angle
-
5,6,7 pls help.
Factorise this pls
Answer:
Step-by-step explanation:
5. -3x^(2)+3xy-4xz
If you factor = -x(3x-3y+4z)
x^yz+xy^2z+xyz^2
xyz(x+y+z)
x^2y-xy^2+x^2y^2
xy(x-y+xy)
6. 14a^2-28a^2b^2+21a^4
-7a^2(4b^2-3a^2-2)
7. a^4b-6a^2b^2+3ab^3
ab(a^3-6ab+3b^2)
Write the equation of the line that passes through the points (9,8) and (6,3). Put
your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
Answer:
y - 3 = 5/3(x - 6)
General Formulas and Concepts:
Algebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Point-Slope Form: y - y₁ = m(x - x₁)
x₁ - x coordinate y₁ - y coordinate m - slopeStep-by-step explanation:
Step 1: Define
Point (9, 8)
Point (6, 3)
Step 2: Find slope m
Substitute: [tex]m=\frac{3-8}{6-9}[/tex]Subtract: [tex]m=\frac{-5}{-3}[/tex]Simplify: [tex]m=\frac{5}{3}[/tex]Step 3: Write function
Slope m = 5/3
Point (6, 3)
Substitute: y - 3 = 5/3(x - 6)Which of the following is an example of a complex number that is not in the set of real numbers?
-7
2 + StartRoot 3 EndRoot
4 + 9i
Pi
Answer:
4 + 9i
Step-by-step explanation:
A complex number consists of a real part and an imaginary part, that is
z = x + yi ( x is the real part and yi the imaginary part )
A complex number does not exist in the set of real numbers.
Answer:
4 + 9i
Step-by-step explanation:
Which of the following tables does not represent a function?
Answer:
the letter choice "B"
Step-by-step explanation:
it repeats the x axis
which number is less than -8
Answer: -8 through -∞, so -8>x>-∞
Step-by-step explanation: This is pretty simple, as this means any number between -8 and -∞.
How many lines of symmetry does this figure have?
A) 2
B) 3
C) 4
D) 6
Answer:
6
Step-by-step explanation:
you can connect opposite vertices and opposite sides
Answer:
6
Step-by-step explanation:
What is What is the equation of the line that passes through the point (−4,2) and has a slope of 1/4 (1 over 4 is a fraction btw)
Answer:
B = y - mx
= 2 - (1/2)(-4)
= 2 - -2
= 4
y = (1/2)x + 4
Step-by-step explanation:
Answer:
You can choose the equation that you are familiar with.
[tex]y - 2 = \frac{1}{4} (x + 4)[/tex]
or
[tex]y = \frac{1}{4} x + 3[/tex]
Step-by-step explanation:
I'm not sure which formula you'd like me to use so I'll do both formula, the point-slope form and slope-intercept form.
We will be doing point-slope form first.
This is the point-slope form:
[tex]y - y_1 = m(x - x_1)[/tex]
Since we already have the given information needed (the slope and the points), we just need to plug in.
[tex]y - 2 = \frac{1}{4} (x + 4)[/tex]
Done!
-----------------------------------------------------
Let's do slope-intercept form now.
The is how the slope-intercept form looks:
[tex]y = mx + b[/tex]
Even though we have some given information, we need to acquire more, the b, also known as the y-intercept (the m, is also known as the slope.).
Let's find it by plugging in and solving the equation.
[tex]y = mx + b \\ 2 = \frac{1}{4}x + b \\ 2 = \frac{1}{4} ( - 4) + b \\ 2 = - 1 + b \\ \frac{ + 1 = + 1 \: \: \: \: \: \: \: \: \: \: \: }{3 = b \: \: \: \: \: \: \: \: \: \: \: } [/tex]
We found b (y-intercept), so now all we gotta do Is plug in for the final equation!
[tex]y = \frac{1}{4} x + 3[/tex]
Done!
Susan is having a debate with her brother about wave
movement. She believes waves will always travel the same
speed if they have the same energy, no matter what the
medium it is traveling through. Her brother says this is not
correct, and different mediums lead to different wave
speeds. Who is right and why?
Answer:
Susan's brother is correct.
Step-by-step explanation:
Divide
3
8
÷
2
3
and express the answer in simplest terms.
Answer:
1[tex]\frac{15}{23}[/tex]
Step-by-step explanation:
38 ÷ 23 = [tex]\frac{38}{23}[/tex]
Since 38 is bigger than 23, you can pull a [tex]\frac{23}{23}[/tex] from [tex]\frac{38}{23}[/tex].
[tex]\frac{38}{23}[/tex] = [tex]\frac{23}{23}[/tex] + [tex]\frac{15}{23}[/tex]
[tex]\frac{23}{23}[/tex] is basically one whole, so you can put the answer as a mixed number.
[tex]\frac{23}{23}[/tex] + [tex]\frac{15}{23}[/tex] = 1 + [tex]\frac{15}{23}[/tex]
= 1[tex]\frac{15}{23}[/tex]
The vet at the aquarium is monitoring a sick octopus. At the start of the week, the octopus weighed 2 9/10 kilograms. He lost 4/5 kilograms over the week. How much does the Octopus weigh now?
eh
Answer:
2 1/10 kilograms
Step-by-step explanation:
2 9/10 minus 4/5
Make the 4/5 have the same denominator as 9/10
2 9/10 minus 8/10
Subtract
2 1/10
PLZ MARK ME BRAINLIEST.
Answer:
2 1/10
Step-by-step explanation:
2 9/10 - 4/5. You need the minus because it says lost. That means you have to take away which is the same as minus.
The 4/5 have the same denominator as 2 9/10. This reason is because the denominator of 5 is lesser than the denomintor of 10. You don't have to do this step, but it will make it easier to solve.
2 9/10 - 8/10 = 21/10 OR 2.1 OR 2 1/10. Subtract them both to get the answer.
How many solutions does the following system of equations have:
3x - 2y = 4
12x - 8y = 16
A. one solution
B. two solutions
C. no solution
D. infinite solutions
Answer:
D. Infinite solutions
Step-by-step explanation:
You divide the 2nd equation by 4.
3x - 2y = 4
(12x - 8y = 16)/4
3x - 2y = 4
3x - 2y = 4
This is exactly the same equation which means that the lines are forever intersecting which means that it has INFINTE solutions.
Help please with this omg
Answer:
A ∪ B = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}
A ∩ B = {5}
Step-by-step explanation:
A ∪ B means all the elements in sets A and B without repetition
A ∩ B means the common elements in the two sets A and B
∵ Set A = {5, 6, 7, 8, 9, 10}
∵ Set B = {2, 3, 4, 5, 11, 12, 13}
→ To Find A ∪ B, write all the elements in the two sets but don't
repeat the common element
∵ 5 is a common element in the two sets
∴ Don't repeat it in A ∪ B
∴ A ∪ B = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13}
→ To find A ∩ B, write the common elements in the two sets
∵ 5 is the only common element in the two sets
∴ A ∩ B = {5}
write 7×7×7×7×7×7 in index
Answer:
117649
Step-by-step explanation:
hope this helps :)
Answer:
117649
Step-by-step explanation:
What are the characteristics of a exponential function
Answer:
A GENERAL NOTE: CHARACTERISTICS OF THE GRAPH OF THE PARENT FUNCTION [tex]f(x)=b^{x}[/tex]
-It’s a one-to-one function
-The graph passes through y-intercept of the point (0,1)
-x-intercept: none
-The domain is all real numbers: (−∞,∞)
-The range is y > 0 or (0,∞)
-The graph is increasing
-The graph is asymptotic to the x-axis as x approaches negative infinity
-Horizontal asymptote: y=0
-The graph increases without bound as x approaches positive infinity
-Increasing if b > 1
-Decreasing if b < 1
-The graph is continuous
-The graph is smooth
Hope this helps! :)
7^14•7^2
A.1^7
B.7^16
C.7^12
D.7^7
What is the value of x in the figure?
Enter your answer in the box.
With easy explanation, I’ll give brainliest to whoever can explain it :)
Answer:
the answer is 29° because you have to subtract 61 from 90 nad you get 29.
Answer:
X = 29°
Step-by-step explanation:
You know that the whole thing equals a 90° angle, and you know that there is a 61° angle, so just simply subtract 90 from 61
Therefore, your answer is 29°
Jane buys 2 postcards during each day of vacation. How many days will Jane have to spend on vacation before she will have bought a total of 14 postcards?
Answer:
7 days
Step-by-step explanation:
14/2=7
14 divided by 2 equals 7 days because she buys 2 postcards each day and she bought a total of 14 postcards.
Solve for the value of w w+8°+48°
Answer:
3
Step-by-step explanation:
degrees add up to 180 so you add 8 + 48 and that equals 56 so you divide 180 by 56 and that equals 3.21 but you round down and it's just 3
I have a math question I need help answering.
determine the account balance at 2 years if $20,000 was invested in an account that conference annually at 4.5 % per year. Round to the nearest cent.
HELPPPPPPPPPPPPPPPPPPPPPPPPPPP :)
Answer:
c
Step-by-step explanation:
because it a custom made
What is the equation of the line that has a slope of 1/2 and contains the points 0,3?show work please
Answer:
Step-by-step explanation:
y - 3 = 1/2(x - 0)
y - 3 = 1/2x - 0
y = 1/2x + 3
slope intercept form for (1,3) and (-3,-5)
Answer:
sorry i dont understand you
Step-by-step explanation:
A 25 - foot ladder is leaned against a wall. If the base of the ladder is 7 ft from the wall,
how high up the wall will the ladder reach?
Answer:
24
Step-by-step explanation:
Since the ladder, wall, and ground form a right triangle, you can use this formula:
A squared + B squared = C squared
A = 7 feet
C = 25 feet
B = distance the ladder will reach
49 + B squared = 625
B squared = 625 - 49
B = square root of 576
B = 24 feet
Answer:
24 feet
Step-by-step explanation:
If the perpendicular bisector of one side of a triangle goes through the opposite vertex, then is the triangle isosceles?
Answer:
True
Step-by-step explanation:
The perpendicular bisector of the opposite side to the vertex bisects the angle at the vertex into two equal parts and also bisects the triangle into two equal parts.
Let A be the angle at the vertex, then assume that the angle is an isosceles triangle with base angles B.
We need to show that A = 180 - 2B for an isoceles triangle
The perpendicular bisector bisects A into two so the new angle in the vertex one half of the bisected triangle is A/2.
Since this half triangle is a right-angled triangle, the third angle in it is 90.
So, A/2 + B + 90 = 180 (Sum of angles in a triangle)
subtracting 90 from both sides, we have
A/2 + B + 90 - 90 = 180 - 90
A/2 + B = 90
subtracting B from both sides, we have
A/2 + B = 90
A/2 = 90 - B
multiplying through by 2, we have
A = 2(90 - B)
A = 180 - 2B
Since A = 180 - 2B, then our triangle is an isosceles triangle.
A number x is at least -1 and no more than 9
What is the inequality ???
A 96-inch board is cut into two pieces. One piece is 6-inches longer than twice the other piece. Let x = the length of the first piece. Let y = the length of the second piece. Which is the system of equations that represents this situation? *
x - y = 96; y = 6x + 2
x + y = 96; y = 2x + 6
x + y = 6; y = 96x + 2
x - y = 2; y = 6x + 96
Answer:
B
Step-by-step explanation:
ok so since the two pieces added together just be 96 inches, we know that
x+y=96
that already eliminates everything but B.
let's keep going though.
let's have y be the piece that is 6 inches longer than double the length of the other piece.
y=2x+6
