Answer:
The slope is -3.
Step-by-step explanation:
The slope is equal to the change in y over the change in x.
First, we take the two y values, -2 and -8, and subtract the SECOND from the FIRST: -2 - (-8) = -2 + 8 = 6 (= change in y)
Second, we take the two x values, 5 and 7, and subtract the SECOND from the FIRST: 5 - 7 = -2 (= change in x)
Finally, we make a fraction, the change in y over the change in x:
6/-2 = -3
The slope is -3.
determine the rate of change for the graph from 2014 to 2015:____ students per year
Answer:
The answer would be 9
Step-by-step explanation:
Aye plz help. Im abt to die. Find the perimiter of the shape below.
Answer:
40
Step-by-step explanation:
Add all the sides together which is 40
Answer:35
Step-by-step explanation:
mrs. page needed two types of paper for her art class. the premium color paper costs $40 per case and the plain white paper costs $30 per case. if she bought 20 cases all together and spent $720 total, how many cases of plain white paper did she buy?
Mrs. Page bought 8 cases of plain white paper.
To solve for the number of cases of plain white paper Mrs. Page bought, we will use algebraic expressions.
Algebraic expression is an expression consisting variables ad coefficient.
We will designate a variable for the unknown and solve it using the algebraic expressions made.
The number of cases of plain white paper and premium color paper is unknown.
Let x = number of cases of plain white paper
and y = number of cases of premium color paper
If Mrs. Page bought 20 cases altogether, then
x + y = 20
If Mrs. Page spent a total of $720 for the 20 cases, and the premium color paper costs $40 per case and the plain white paper costs $30 per case, then:
30x + 40y = 720
Multiplying the first equation by 30, we get:
30x + 30y = 600
Subtracting it to the 2nd equation,
30x + 40y = 720
- 30x + 30y = 600
10y = 120
y = 12
Recall that x + y = 20. Then,
x + 12 = 20
x = 8
Hence, Mrs. Page bought 8 cases of plain white paper and 12 cases of premium color paper.
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f(x) = -x^2 – 10x find f(-5)
Answer:
f(-5)=-(-5)^2 - 10(-5) = 25
Step-by-step explanation:
The value of f(-5) is 25 when x = -5
What are Arithmetic operations?Arithmetic operations can also be specified by subtracting, dividing, and multiplying built-in functions. The operator that performs the arithmetic operation is called the arithmetic operator.
Operators which let do a basic mathematical calculation
+ Addition operation: Adds values on either side of the operator.
For example 12 + 2 = 14
- Subtraction operation: Subtracts the right-hand operand from the left-hand operand.
for example 12 -2 = 10
* Multiplication operation: Multiplies values on either side of the operator
For example 12*2 = 24
Given that
⇒ f(x) = -x² – 10x
To determine the value of f(-5)
Substitute the value x = -5
⇒f(-5 ) = -(-5)² - 10(-5)
⇒f(-5 ) = 25
Hence, the value of f(-5) is 25 when x = -5
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Use the distributive property to rewrite each expression in its equivalent form.
1. 4(x + 3)
2. -7(4 - y)
3. 6(3x + 5y -4)
4. 9a-3/3
Rewrite each linear expression by factoring out the greatest common factor.
5. 64x + 24
6. -5y -35
HELPP I NEED TO SUMBIT SOON
The surface area of a solid is 4500 square inches. Is the surface area greater than 3 square yards
If the surface area of the solid is 4500 square inches, then the surface area of the solid is greater than 3 square yards
What are areas?The area of a shape is the amount of space on the shape.
For most regular quadrilaterals, the area is the product of the length and the width of the quadrilateral
Is the surface area greater than 3 square yards?The surface area of the solid is given as
Surface area = 4500 square inches
As a general rule of unit conversion
1 square inches = 1/1296 square yards
Next, we multiply both sides of the equation by 4500
So, we have
4500 * 1 square inches = 4500 * 1/1296 square yards
Evaluate the products in the above equation
4500 square inches = 3.5 square yards
3.5 square yards is greater than 3 square yards
Hence, the surface area of the solid is greater than 3 square yards
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-3(x+5) - (2x+3) equals
-5x,-18
i hope im right im not quite sure bout this one
16 - 3x = 4 + x
solve please
Answer:
x = 3
Step-by-step explanation:
Solution for 16-3x=4+x equation:
Simplifying
16 + -3x = 4 + x
Solving
16 + -3x = 4 + x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x' to each side of the equation.
16 + -3x + -1x = 4 + x + -1x
Combine like terms: -3x + -1x = -4x
16 + -4x = 4 + x + -1x
Combine like terms: x + -1x = 0
16 + -4x = 4 + 0
16 + -4x = 4
Add '-16' to each side of the equation.
16 + -16 + -4x = 4 + -16
Combine like terms: 16 + -16 = 0
0 + -4x = 4 + -16
-4x = 4 + -16
Combine like terms: 4 + -16 = -12
-4x = -12
Divide each side by '-4'.
x = 3
Simplifying
x = 3Solution for 16-3x=4+x equation:
Simplifying
16 + -3x = 4 + x
Solving
16 + -3x = 4 + x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x' to each side of the equation.
16 + -3x + -1x = 4 + x + -1x
Combine like terms: -3x + -1x = -4x
16 + -4x = 4 + x + -1x
Combine like terms: x + -1x = 0
16 + -4x = 4 + 0
16 + -4x = 4
Add '-16' to each side of the equation.
16 + -16 + -4x = 4 + -16
Combine like terms: 16 + -16 = 0
0 + -4x = 4 + -16
-4x = 4 + -16
Combine like terms: 4 + -16 = -12
-4x = -12
Divide each side by '-4'.
x = 3
Simplifying
x = 3Solution for 16-3x=4+x equation:
Simplifying
16 + -3x = 4 + x
Solving
16 + -3x = 4 + x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-1x' to each side of the equation.
16 + -3x + -1x = 4 + x + -1x
Combine like terms: -3x + -1x = -4x
16 + -4x = 4 + x + -1x
Combine like terms: x + -1x = 0
16 + -4x = 4 + 0
16 + -4x = 4
Add '-16' to each side of the equation.
16 + -16 + -4x = 4 + -16
Combine like terms: 16 + -16 = 0
0 + -4x = 4 + -16
-4x = 4 + -16
Combine like terms: 4 + -16 = -12
-4x = -12
Divide each side by '-4'.
x = 3
Simplifying
x = 3
Ryan bys plates and cups for a party. There are 12 plates in a pack and 10 cups in a
pack. He wants an equal number of plates and cups for a the party. What is the least number
of packs of plates and the least number of packs of cups that Ryan must buy?
Help please
Answer:
• 5 packs of plates
• 6 packs of cups
Step-by-step explanation:
5 packs of plates = 60 plates (5×12)
6 packs of cups = 60 cups (6×10)
Answer:
5 packs of plates
6 packs of cups
========================================================
Explanation:
GCF = greatest common factor
LCM = lowest common multiple
The GCF of 12 and 10 is 2 since
12 = 2*610 = 2*5It's the largest factor they have in common together.
Multiply 12 and 10, then divide by the GCF to get the LCM
LCM = (12*10)/GCF = 120/2 = 60
The LCM is 60. We can verify this by looking at a few multiples like so
multiples of 12 are: 12, 24, 36, 48, 60, 72, ...multiples of 10 are: 10, 20, 30, 40, 50, 60, 70, ...The LCM is the amount of plates and cups that match up.
Buying 5 packs of 12 plates gets 5*12 = 60 plates total
Buying 6 packs of 10 cups each gets 6*10 = 60 cups total
I will give multiple brainlist to people who help me with these slides!
Answer:
A)6
B)ST
Step-by-step explanation:
A if u turn it, 15 is equal to the 10
15/9=10/x
x=90/15
x=6
B) Turn it so #2 is facing up.
ST is the same.
Hope this helps plz hit the crown :D
Step-by-step explanation:
—MathA. BC/FG = AC/EG
9/FG = 15/10
FG = (9 x 10) / 15
FG = 6
B. CD/EA= ST/UQ
Follow my account^^
Pls I need help plsssss
Answer:
The first option!
Step-by-step explanation:
2 2/3 but brainliest? Thanks!
Which statements are true? Select the two correct answers.
The square root of a positive number greater than 1 is less than the number,
The square root of a positive number is always less than half of the number itself.
The square root of a positive number less than 1 is less than the number.
The square root of a perfect square is not a whole number.
The square root of a positive number less than 1 is between 0 and 1.
the person ontop is wrong its a and e
Step-by-step explanation:
:)
help! what is the equation of the line??!
Answer: y=-1/3-2
Step-by-step explanation:
slope=-1/3
y intercept=-2
PLS HELP ME ASAP I DONT HAVE TIME IT ALSO DETECTS IF ITS RIGHT OR WRONG
Answer
3.2
Step-by-step explanation
8% of 40 is 3.2
so it would be 40- 3.2 and that = 36.8
please help! (will give brainlist!)
37: given the line y=3/4x-2
a: find the parallel slope.
b: find the perpendicular slope.
38: determine if the lines are parallel or perpendicular:
a: -2x+5y=9 and 5x+2y=-6
b: 4y=8x+12 and -12x+6y=24
39: write an equation of a line that passes through (-4,-6) and is parallel to y=3x-8
40: write an equation of a line that passes through (2,5) and is perpendicular to y=1/4x-12
Step-by-step explanation:
Two lines are parallel if they have the same slope and are perpendicular if the product of their slopes is -1
37.a.Parallel slope=¾
b.Perpendicular slope =-1/¾=-4/3
38.a. -2x+5y=9 and 5x+2y=-6
For the first line,5y=2x+9,y=2/5x+9/5
For the second line,2y=-6-5x,y=-3-5/2x
Compare the slopes
2/5 vs -5/2 we see that -5/2 is the negative reciprocal of 2/5 therefore they are perpendicular
39. If both lines are parallel then their slopes are equal. The slope of y=3x-8 is 3
Using the point-slope form, y-y1=m(x-x1)
y--6=3(x--4)
y+6=3(x+4)
y+6=3x+12
y=3x+12-6
y=3x+6
40.The slope of y=¼x-12 is ¼
The negative reciprocal of it is the slope of it's perpendicular that is -1/¼=-4
Using the point slope form, y-y1=m(x-x1)
y-5=-4(x-2)
y-5=-4x+8
y=-4x+8+5
y=-4x+13
Find NX. PLs help with this problem !
Answer:
It i 5.Because it is Equlitrial triangle
You need to paint a decorative garden ornament that is in the shape of pyramid with a square base
that is 9 inches long and has a slant height of 12 inches.
a. A smaller pyramid has linear dimensions that are
times that of the larger pyramid. Does the
smaller pyramid require times the amount of paint? Explain.
b. Another pyramid has the same base lengths but the slant height. Does this pyramid require
the paint as the original pyramid? Explain.
Step-by-step explanation:
Total Surface area of a pyramid is given as
= Lateral surface area + area of base.
Lateral surface area = 1/2×perimeter of base×slant height
given the base is square with side 9 in , and slant height of 12 inches.
therefore, LSA = 1/2(9*4)×12 = 216 in^2
Now, TSA = LSA + Base area = 216+9^2 = 297 in^2
a) It is given that the pyramid is smaller therefore, it will require lesser paint than the original pyramid ( The TSA of the smaller pyramid cannot be calculated as its dimentions are not given).
b) It can not be solved as dimensions are missing in the question.
However, the logic has been explained in the soluion one easily put values to find the solution.
A bucket contains 15 white, 8 pink, 3 yellow, and 10 black golf balls. What is the probability of selecting a yellow ball, keeping it, then selecting a white ball? Write your answer as a fraction in simplest form.
Answer:
5/144
Step-by-step explanation:
Step one:
given data
sample space
15 white,
8 pink,
3 yellow, and
10 black golf balls
Sample size= 15+8+3+10= 36 golf balls
Step two:
1. first event
selecting a yellow ball= 3/36= 1/12
2. second event with a replacement on the first event
selecting a white ball= 15/36= 5/12
hence for the two events, the probability is
1/12*5/12
= 5/144
The function f(t) = 750t + 20,000 models the number of movie theaters in the United States t years after 1985. Use this equation to predict the year in which the United States will have 35,000 movie theaters.
Given:
The function models the number of movie theaters in the United States t years after 1985.
[tex]f(t)=750t+20,000[/tex]
To find:
The year in which the United States will have 35,000 movie theaters.
Solution:
We have,
[tex]f(t)=750t+20,000[/tex]
Putting f(t)=35000, we get
[tex]35,000=750t+20,000[/tex]
[tex]35,000-20,000=750t[/tex]
[tex]15,000=750t[/tex]
Divide both sides by 750.
[tex]\dfrac{15,000}{750}=t[/tex]
[tex]20=t[/tex]
It means, United States will have 35,000 movie theaters 20 years after 1985.
[tex]1985+20=2005[/tex]
Therefore, United States will have 35,000 movie theaters is 2005.
Plz help asap easy(not for me) 6th grade question
Answer:
AEI hope this helps!
find the value of x so that f(x)= 7
Answer: f (x) =7
Step-by-step explanation:
Help me PLEASEEEE I’m on a time limit
Answer:
C. 20/52
Step-by-step explanation:
22 is 55% of what number ?
Answer:
40
Step-by-step explanation:
55% of n is equal to 22.
First, let's make an equation:
(55/100)*n = 22
(11/20)*n = 22 (reduced the fraction)
n = 22/(11/20) (divide both sides by 11/20)
n = 40
Hope this helps!
The function h(x) passes through the point (-8,9). What point must lie on h^-1(x)?
Answer:
Step-by-step explanation:
h^-1(x) is the inverse of h(x) so its graph is the reflection of h(x)
in the lines y =- x.
This reflection is (x, y) ---> (y , x)
So the required point is (9, -8)
The point (9, -8) must lie on the inverse function [tex]h^{(-1)}(x)[/tex].
To find the point that must lie on the inverse function [tex]h^{(-1)}(x)[/tex], use the fact that points on the original function and its inverse are reflections over the line y = x.
If the point (-8, 9) lies on the function h(x), then the inverse function [tex]h^{(-1)[/tex](x) will have a point that is the reflection of (-8, 9) over the line y = x.
The coordinates of the reflected point will simply swap the x and y values. So, the point that must lie on [tex]h^{(-1)[/tex](x) is (9, -8).
Therefore, the point (9, -8) lie on the function [tex]h^{(-1)}(x)[/tex].
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pls helppp
math work
bleh
Answer:
m = -10
Step-by-step explanation:
>:)
Answer:
m= -10
Step-by-step explanation:
2< -7 - (-10)
2< -7 + 10
2< 3
Which statement describes the graph of f(x) = –x4 + 3x3 + 10x2?
Answer:
The graph touches the x axis at x = 0 and crosses the x axis at x = 5 and x = -2.
Step-by-step explanation:
Please help!!
The options for both of these is right here!
Card A:
16
6
90
9
Card B: Card B *
QR
TU
RS
ST
Given:
Triangle ABC is similar to triangle EFG.
Pentagon ABCDE is similar to pentagon QRSTU.
To find:
The length of segment FG.
The missing value in [tex]\dfrac{D}{EA}=\dfrac{?}{UQ}[/tex].
Solution:
In card A,
AC = 15 in.
BC = 9 in.
EG = 10 in.
Triangle ABC is similar to triangle EFG. So, the corresponding sides are proportional.
[tex]\dfrac{AC}{BC}=\dfrac{EG}{FG}[/tex]
Putting the values, we get
[tex]\dfrac{15}{9}=\dfrac{10}{FG}[/tex]
[tex]\dfrac{5}{3}=\dfrac{10}{FG}[/tex]
[tex]5\times FG=3\times 10[/tex]
[tex]5FG=30[/tex]
Divide both sides by 5.
[tex]FG=6[/tex]
Therefore, the length of segment FG is 6 in.
In card B, pentagon ABCDE is similar to pentagon QRSTU.
The corresponding sides of similar figure are proportional. So,
[tex]\dfrac{AB}{QR}=\dfrac{BC}{RS}=\dfrac{CD}{ST}=\dfrac{DE}{TU}=\dfrac{EA}{UQ}[/tex]
Now,
[tex]\dfrac{CD}{ST}=\dfrac{EA}{UQ}[/tex]
It can be written as
[tex]\dfrac{CD}{EA}=\dfrac{ST}{UQ}[/tex]
Therefore, the missing side is ST.
if you answer correct you get brainliest!
Answer:
The correct answer is D.) y = -2x-3
Step-by-step explanation:
You can solve the given equation y - 5 = -2(x + 4):
y - 5 = -2(x + 4) simplify the right side
y - 5 = -2x - 8 add 5 to both sides
y = -2x - 3
Hope it helps! have a great day! :)
Answer:
D
Step-by-step explanation:
solve whats in ( ) first y-5= -2x -8
move the constant to the right y = -2x - 8+5
(5 is the constant )
add the sums y= -2x -3
This is actually the slope intercept form
Gladys scored 42 points in a basketball game. She only took 2-point shots and 3-point shots. She made a total of 18 shots. Write a system of equations to find the number of 2-point shots and 3-point shots Gladys made. Let LaTeX: xx represent the number of 2-point shots and LaTeX: yy represent the number of 3-point shots that Gladys made.
Answer:
[tex]x+y=18 \\2x+3y=42[/tex]
Number of 2-point shots taken = 12
Number of 3-point shots taken = 6
Step-by-step explanation:
Total number of points scored by Gladys = 42
Only 2-point and 3-point shots are taken by Gladys.
Let number of 2-point shots taken = [tex]x[/tex]
Let number of 3-point shots taken = [tex]y[/tex]
Total number of shots taken = 18
Therefore, first equation can be written as:
[tex]x+y=18[/tex]
Total points scored = 42
Therefore, second equation can be written as:
[tex]2x+3y=42[/tex]
System of equations is:
[tex]x+y=18 .... (1)\\2x+3y=42 .... (2)[/tex]
Using elimination method to solve the system of equations.
Multiplying equation by 2 then subtracting it from equation (2):
[tex]3y - 2y = 42 - 36\\\Rightarrow y = 6[/tex]
By equation (1):
[tex]x+6=18\\\Rightarrow x = 12[/tex]
Therefore, Number of 2-point shots taken = 12
Number of 3-point shots taken = 6
Find the value of x.
Answer:
x=102
Step-by-step explanation: