Answer:
x = -4
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesStep-by-step explanation:
Step 1: Define equation
x + 13 = 9
Step 2: Solve for x
Subtract 13 on both sides: x = -4Step 3: Check
Plug in x into the original equation to verify it's a solution.
Substitute in x: -4 + 13 = 9Add: 9 = 9Here we see that 9 does indeed equal 9.
∴ x = -4 is a solution of the equation.
Answer:
x=-4
Step-by-step explanation:
So when solving a one-step algebraic equation you need to remember what you do to one side you have to do to the other side. In the problem x + 13 = 9 you need to subtract 13 from both sides to isolate x. So your problem should look like x = 9 - 13. Now all you have to do is solve 9 - 13 which is -4. So x = -4.
I hope this helped.
What is the correct rate of change of Bill and Kevin's trip
The ratio of women to men stationed at Ft. Bragg is 25 to 50. If there are 250 women at Ft. Bragg, how many people are there total stationed there?
A. 500
B. 75
C. 750
D. 1000
Answer:
750 total people
Step-by-step explanation:
25 to 50 = 1/2
So: 250 x 2 = 500 men
500 + 250 = 750 total
the difference between half a number and 19
Answer:
9
Step-by-step explanation:
what is the answer to 6/8 - 3/4?
Answer:
0
Step-by-step explanation:
For common denominator,
6/8 - 3/4 = 6/8 - (3*2)/(4*2) = 6/8 - 6/8 = 0
What is the equation in standard form of the line that passes through the points (−2, 33) and (5, −16)? A. 7x − y = 51 A. 7x − y = 51 B. 7x + y = −47 B. 7x + y = −47 C. 7x + y = −14 C. 7x + y = −14 D. 7x + y = 19 D. 7x + y = 19
Answer:
you have to find the unknown before each question. slove the bracket first and then move on
OMG PLEASE HELP!!! NEED WITHIN FEW HOURS!! The diagram shows three circles with radii r=10 cm. The centers also form the vertices of an equilateral triangle.
Answer: 16.205 cm²
It takes some time, but it's not impossible!
Step-by-step explanation:
Find the area of the triangle, then subtract the area of the three sectors.
The three sectors are each 60° so they add to 180° which is equivalent to half the area of one circle.
The area of the triangle is one half base times height. To find the height of the triangle, use the Pythagorean Theorem to get the length of the perpendicular bisector.
a² + b² = c² .
C is the side length, 20cm. (the length of two radii) B is half the side length 10cm. A is the "altitude" or height we need to find.
a² + 10² = 20²
a² + 100 = 400 . a² = 400-100
a² = 300
a = √300 a ≈ 17.3205
Area of triangle: A= bh/2
A = (20 × 173.205)/2
Triangle Total Area ≈ 173.205
To the area of the circle, use the equation A = πr²
A = 3.14 × 10²
A = 3.14 × 100
Circle Total Area = 314 cm².
You could take 1/6 of that, and then multiply by 3, or just take half
Area of sectors= 157 cm²
Triangle Area - Sectors Area = Blue shape Area
173.205 - 157 ≈ 16.205 cm²
Hi, are you still active?
find the measures of angles K, M, P, and R in the figure. Note that the figure may not be drawn to scale.
Answer:
right angle
Step-by-step explanation:
The picture is my question ( 2 math/algebra questions)
Answer:
question 1. (20)X = 100
question 2. the last one
Step-by-step explanation:
Answer:
Step-by-step explanation:
1. 20 a yard and made 100. 100/20=5 yards
20x=100
2. Since they don't give the number of yards they did mow, this would be my answer. I would say half the amount. Since they cut their rates in half, they'll have to cut twice as many to even the amount as before. They would have to cut three - four times as many to make over the original amount. They only have one weekend, so that'll be hard.
The table below shows pairs of value that satisfy a linear function.
What is the y-intercept of the graph of this function?
Answer:
-27
Step-by-step explanation:
Which equations match the graph?
5 STARS AND BRAINLYEST
Answer:4
Step-by-step explanation:
Which equation is equivalent to the equation 3x - 12 = 24?
A) 15x - 60 = 120
B) 3x = 12
C) 3x = 36
D) x - 4 = 8
E) 12x - 12 = 24
Answer:
C
Step-by-step explanation:
To simplify the equation, all you need to do is add 12 to both sides to cancel out the -12.
The equations that are equivalent to the equation 3x - 12 = 24 are
3x = 36
x - 4 = 8
15x - 60 = 120
Options A, C, and D are correct.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example: x + 2 = 7 is an equation.
We have,
3x - 12 = 24 ____(1)
From (1)
Adding 12 on both sides.
3x = 24 + 12
3x = 36 ____(2)
From (1)
Dividing 3 into both sides.
x - 4 = 8 ____(3)
From (1)
Multiplying 5 into both sides.
5 (3x - 12) = 5 x 24
15x - 60 = 120 ____(4)
From (2), (3), and (4) we see that,
3x = 36
x - 4 = 8
15x - 60 = 120
Thus,
The equations that are equivalent to the equation 3x - 12 = 24 are
3x = 36
x - 4 = 8
15x - 60 = 120
Options A, C, and D are correct.
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Jamie sells used cars. She earns 15% of the selling price of each car thatshe sells. The function y = 0.15x models the amount Jamie earns fromselling x number of cars. What is the most appropriate domain of thefunction?
A.all integers
B.all rational numbers
C.all nonnegative integers
D.all nonnegative rational numbers
Answer:
B. All rational numbers
Anyone know how to solve this by Elimination Please and thanks ?
Peter says, "If you subtract 13 from my number and multiply the difference by - 4, the result is -100." What is Peter's number?
Peter's number is
Answer:
-38
Step-by-step explanation:
-25 + 13 = -38
-38 - 13 = -25
-25 x 4 = -100
formula: x - 13 = -25
Brian earns $28.50 tutoring for 3 hours. Assuming he is paid at constant rate, how much would Brian earn tutoring for 18 hours?
Answer:
Step-by-step explanation:
171 just multiply it by 6 since 3 times 6 equals 18
Answer:
171.00 dollars
Step-by-step explanation:
28.50÷3=9.50
9.50= 1 hour
9.50×18=171.00
[Functions] I just need yes's and no's.......a lot of them, functions just really don't click with me and I don't understand why, they make me mad ;-;
Answer:
uh-
Step-by-step explanation:
Answer:
1.yes 2.no.3.yes.4no.5.yes
Step-by-step explanation:
Please help and answer
Answer:
-3
Step-by-step explanation:
coefficients are numbers multiplied by variables such as 8y. 8 is the coefficient.
Which shows the steps for performing long division in the correct order?
Answer:
D. divide, multiply, subtract, repeat
Step-by-step explanation:
A jacket was on sale for 20% off its original price of $60. Now, it is on sale for an additional 10% off its previous sale price. Determine whether each statement is true or false.
Step-by-step explanation:
The question is incomplete, here is the complete one
A jacket was on sale for 20% off its original price of $60. Now, it is on sale for an additional 10% off its previous sale price. Determine whether each statement is true or false. The jacket is now 40% off its original price. True or false The jacket now costs $48.00. True or false The jacket is now 72% of its original price. True or false The jacket now costs $43.20. True or false
Step one:
given
original price= $60
discount =20% of 60
discount = 20/100*60
discount = 0.2*60
discount = $12
selling price= 60-12= $48
Added price= 10% off $48
Added price= 10/100 *48
Added price= 0.1 *48
Added price= $4.8
new price= 4.8-48=$43.2
the new price of the jacket is $43.2
1. The jacket is now 40% off its original price
40/100*60=$24-----False
2. The jacket now costs $48.00-----False
3. The jacket is now 72% of its original price= 72/100*60=$43.2----True
4. The jacket now costs $43.20------True
Which equation can be represented by the graph?
Answer:
y+10 = -5(x-3)
Explaination:
Finding the slope intercept form provides you with the line your looking for
here you want to isolate y
y = -5(x-3)-10
and then ditrubute the -5 into the parenthesis
y = -5+15-10
Combine like terms
y = -5x +5
and by looking at this in terms on y=mx+b
the line will intercept the y-axis at (5,0) like the line above shows
Given that the points
(16, -5) and (-40, 16) lie on a line, what is the slope of the line?
A. -3/8
B. -8/3
C. 3/8
D. 8/3
Answer:
The answer is A.
Step-by-step explanation:
y²-y¹/x²-x¹
16-(-5)/(-40)-16
21/-56
= -3/8
A map has a scale of 1 cm: 5 km. Determine how far apart two cities are if they are 8 cm apart on the map.
Answer:
i believe the answer is 40km.
Answer:
We are given that 1 cm on the map represents 5 km on earth's surface.
Then, if the cities are 8 cm apart on the map, they will be 8*5 = 40 km apart on Earth.
Step-by-step explanation:
Can someone help me with these two problems?
Answer:
1. In first question I guess the answer will be: last point
There are no mistakes. Answer is correct.
7.Solve the equation below.
(x – 9)2 = 81
x = 18 and x = 0
x = 27 and x = -5
x = 34 and x = 5
no real solution
THIS IS DUE IN 4 MINS PLZ HELP NOW
Answer:
Sorry
Step-by-step explanation:
This is hard i tried but dont understand
Answer:
1) y= -2×+5/5
2) y=-6×+7/4
number of titles need to cover a floor of a room 300cm by 200cm if the area of one of the title 2000sq.cm is _____
please show working clearly.
Answer:
30 tiles
Step-by-step explanation:
area = 300 x 200 = 60000sqcm
60000/ 2000= 30
What’s the answer to 0.462 / 0.2
Answer: 2.31
Step-by-step explanation: 0.462 divided by 0.2 is 2.31. I knew it was going to be over 2 because 0.2 times 2 is 0.4.
Answer:
2.31
Step-by-step explanation:
0.2 goes into 0. 2 times. First part of answer: 2
0.2 goes into 0.06 3 times. second of answer: 3
0.2 goes into 0.002 one time. Third part of answer: 1
Answer: 0.231.
Now we need to move the decimal 4 places to the left and we get 2.31
HOPE THIS HELPS YOU!! :)
Plz mark brainliest if you want to! :)
Part A: Marguerite rented a truck at $125 for 2 days. If she rents the same truck for 5 days, she has to pay a total rent of $275.
Write an equation in the standard form to represent the total rent (y) that Marguerite has to pay for renting the truck for x days. (4 points)
Part B: Write the equation obtained in Part A using function notation. (2 points)
Part C: Describe the steps to graph the equation obtained above on the coordinate axes. Mention the labels on the axes and the intervals. (4 points)
(10 points)
Answer:
y = 50x+25
f(x) = 50x+25
Step-by-step explanation:
Using the slope intercept form of the equation, y = mx+b
where x is the amount per day and b is the flat fee
2 days
125 = 2x+b
5 days
275 = 5x+b
Subtract
275 = 4x+b
125 = 2x+b
---------------------
150 = 3x
Divide by 3
150/3 = 3x/3
50 =x
The cost per day is 50 dollars
y = 50x +b
Using the data for 2 days
125 = 50*2 +b
125 = 100 +b
125-100 = b
b = 25
The equation is y = 50x+25
f(x) = 50x+25
To graph, The x axis is number of days and the y axis is total cost
The number of days starts with 0, which is the y intercept
Let x = 0, y =25
Using the slope, we go 50 up and 1 to the right ( 50 dollars per day)
The next point plotted ins ( 1,50)
Draw a straight line
Answer:
y = 50x+25
f(x) = 50x+25
Titus is asked to prove hexagon FEDCBA is congruent to hexagon
F'E'D'C'B'A' in the graph below. Titus thinks that if he transforms hexagon
FEDCBA by (x,y) - (x + 16. y - 10) he can show the two figures are
congruent. Is he correct? Explain why or why not. If Titus is incorrect, what
series of transformations will correctly prove FEDCBA F'E'D'C'B'A'S
у
6
В.
>E
4
2
с
D
-14 -12 -10 -8
x
-6
4
2
4
6
8
10 12
-20
-2
in
A'
4
E!
-6
В"
-8
lo
c
-10
Is Titus correct? YES NO
Explain why or why not (required)
Answer:
correct
Step-by-step explanation:
he is correct because the transformation is a translation and under the translation the image and preimage are congruent.
the measure of the sides are preserved, and the peasure of the angles are preserved so if all the corsponding sides and angles are congruent the hexagons are congruent too
Answer:
(x, y) -----> ( - x , y - 10 )
Step-by-step explanation:
Titus is not correct.
There are two transformations will correctly prove FEDCBA ≅ F'E'D'C'B'A'
First transformation is Reflection over y-axis , then translation 10 units down.
The final formula is ( - x , y - 10 )
please help me with this question
Answer:
y = 75x +1
is the correct answer hope it is helpful to you ☺️
The linear equation for this situation is,
⇒ y = 75x
And, There are 75 apple pick in one hour.
What is linear expression?
A linear expression is an algebraic statement where each term is either a constant or a variable raised to the first power.
Given that;
The graph shows how many apples Erin can pick if she ,maintain a constant rate.
Now,
Let two points on the graph are (0, 0) and (1, 75).
So, Slope of the graph (m) = (75 - 0) / (1 - 0)
= 75
Thus, The linear equation is;
⇒ y - y₁ = m (x - x₁)
⇒ y - 0 = 75 (x - 0)
⇒ y = 75x
Where, y is number of apples and x is number of hour.
Thus, Number of apple pick in one hour is;
⇒ y = 75 x 1
⇒ y = 75
So, There are 75 apple pick in one hour.
Therefore, The linear equation for this situation is,
⇒ y = 75x
And, There are 75 apple pick in one hour.
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