2
Find the slope from the 2 points.
(-12,-9) and ( 18, 6)
-2
-1/2
2
1/2
Step-by-step explanation:
the slope of a line is the ratio y/x.
that means when going from one point to the other, how many units is y changing, when x changes a certain number of units.
so, going from one point to the other here, x changes by 30 units (from -12 to +18). and y changes 15 units (from -9 to 6).
therefore, the slope is
15/30 = 1/2
Find (f^-1)'(7) without finding the inverse function where f(x) = 5 – 2x^3.
Step-by-step explanation:
the derivative of an inverse function is
1/f'(f^-1(x))
f'(x) = -6x²
f^-1(7) is solving the original function equation for x under the knowledge that y = 7
7 = 5 - 2x³
2 = -2x³
-1 = x³
=>
x = -1
f'(-1) = -6×(-1)² = -6×1 = -6
so,
(f^-1)'(7) = -1/6
i do not get this so please explain what it means
Answer:
Huh?
Step-by-step explanation:
I do not see anything.
Joe has $180 in his bank account he wants to buy a new gaming system for $250 in two weeks his parents have offered to lend him money if he needs it he gets $20 a week for a allowance will he have enough money at the end of two weeks to make the purchase of his own if not how much will he have to borrow from his parents explain
Answer:
yes he will
Step-by-step explanation:
Hence, if his parents giving him $[tex]35[/tex] per week then he can purchase his game system.
What is the simplification?
Simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.
Here given that,
Joe has $[tex]180[/tex] in his bank account he wants to buy a new gaming system for $[tex]250[/tex] in two weeks his parents have offered to lend him money if he needs it he gets $[tex]20[/tex] a week for a allowance
So,
His account saving is $[tex]180[/tex].
He wants to purchase a game system which costs $[tex]250[/tex].
His parents giving $[tex]20[/tex] per week. So iin two weeks it is [tex]20(2)=40[/tex]$.
Then , the total savings he had [tex]180+40=220[/tex]$
So he needs [tex]30[/tex]$ more to purchas his game system
If his parents giving him $[tex]35[/tex] per week then in two weeks it would be [tex]35(2)=70[/tex]$.
Then his total savings are
[tex]180+70=250[/tex]$.
Hence, if his parents giving him $[tex]35[/tex] per week then he can purchase his game system.
To know more about the simplification
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Joshua delivered 30 hives to the local fruit farm. If the farmer has paid to use 5% of the total number of Joshua’s hives, how many hives does Joshua have in all?
Answer:
600 hives
Step-by-step explanation:
If 30 is 5% of the total number of hives Joshua has, then 5%x20=100%
So, 30x20=100%
30x20=600
hope it helped :)
whats 22.33 in fraction form
Answer:
The answer is in the picture above
Over what interval is the function decreasing?
PLS HELP. (step by step explanation preferred. )
Step-by-step explanation:
according to the drawing, the minimum value of the function is 0, the domain of the function decreasing is x < 0,
so, the correct answer is
a. (-oo, 0)
he total cost of 5 doughnuts and 6 cookies at a bakery is $11.95. The cost of each cookie is $0.95.
Select the equation and its solution that can be used to determine the cost, x, of 1 doughnut.
Answer:
x=1.25
Step-by-step explanation:
Answer:
($0.95 * 6) + (5x) = $11.95
The cost of one donut (x) = $1.25
Step-by-step explanation:
I hope this helps!
Convert 34.6 centimeters to inches. Use 1 in=2.54 cm.
What is the equation of this line?
y=34x−3
y=−3x−34
y=−3x−43
y=43x−3
Step-by-step explanation:
this line goes through the points (0, -3) and (4, 0).
so, the y-axis intercept is at y = -3.
therefore, the equation has to end with "- 3".
the slope (the factor of x in the equation) is the y/x ratio of the changes of y and of x when going from one point to the other :
x changes by 4 positive units (from 0 to 4), and y changes by 3 positive units (from -3 to 0).
so, the slope is 3/4.
and so, the equation is
y = (3/4)x - 3
what is 5.6 less than 25.3
Answer:
19.7
Step-by-step explanation:
Two numbers add up to 44 they have a difference of 10 what are the numbers?
22 is half
u go down by 1 and up by 1
It ends up at 17 and 27
17+27=44
The two numbers you are looking for are 17 and 27
Example # 12: The probability that Mary can work a problem is 70%.
Find the probability that Mary cannot work the problem.
HELP PLEASE!!!
Answer:
the answer is 30% hope this helps you
Answer:
30%
Step-by-step explanation:
The two outcomes (can work the problem and can't work the problem) are complementary.
In probability theory, the complement of any event A is the event [not A], i.e. the event that A does not occur. The event A and its complement [not A] are mutually exclusive and exhaustive.
Complementary events are two outcomes of an event that are the only two possible outcomes.
Complementary outcomes add to 1 or 100%.
100 - 70 = 30.
URGENT!! A train travels at the rate of 120 km per hour
11. What is its speed in meters per second?
Answer:
33.333
Step-by-step explanation:
I looked up the answer
If I`m going to solve "what is the percent is 29.00 out of of 122.50 what do I multiply by 100 or 122.50?
Answer:
I don't know the answer you know
[tex]\frac{5}{12} -\frac{2}{9}[/tex]
ABC, Construct a triangle ABC, <B =90° AB= 4cm AC=5cm. Find the third side.
Helpppp
Pythagoras Theorem
BC = 3 cm
Step by step explanation :
» Attached «
Find the standard deviation of the given data rounded to the nearest hundredth.3, 4, 5, 7, 10, 12, 15
Answer:
4.140393356
Step-by-step explanation:
Mean = (3+4+5+7+10+12+15) / 7 = 8
Count = 7 numbers
Sum of the numbers = 56
Each number minus the mean =
(3-8=-5)(4-8=-4)(5-8=-3)(7-8=-1)(10-8=2)(12-8=4)(15-8=7)
Now square of each of these numbers:
25+16+9+1+4+16+49 = 120
Variance = 120/7 = 17.14285714
Standard deviation = square root of the variance
Sqrt 17.14285714 = 4.140393356
please help me solve this !
will mark brainliest !
(spammers reported)
Answer
-10
Step-by-step explanation:
-8w-7=9
add 7 to both sides
-8w=16
divide by negative 8 on both sides
w=-2
w-8=-10
On simplifying,
-8w - 7 = 9
-8w = 16
w = -2
then,
= w - 8
= -2 - 8
= -10.
A box is filled with 10 bluecards, 2 red cards, and 2 yellow cards. A card is chosen at random from the box. What is the probability that the card is not red?
Write your answer as a fraction in simplest form.
Answer:
6/7 is your answer
Step-by-step explanation:
10+2+2 is 14 and that's your total number of cards. then you add the blue cards and the yellow cards to get your answer and reduce.
Use the midpoint formula to find the midpoint of (4, -2) and (6, 10)
Answer:
the mid point in x axis is half of 6-4 which =1
the mid point in y axis is half of 10-(-2) which=6
hence he midpoint is (1,6)
In a fishing derby, jimmy caught six more fish than his sister kelly. How many fish did each person catch if they caught a total of 20 fish?
I NEED HELP ASAP PLS!!!!!!
Answer:
the first one is not equivalent, the second one is equivalent.
Step-by-step explanation:
What is the slope of A line parallel to the line whose equation is 6x+9y=216
4. What is the interval notation for the solution set of the following number
line?
-5 -4 -3
-2
-1 0 1
2
3
4
5
Answer:
deez
Step-by-step explanation:
A total of $8000 is invested: part at 5% and the remainder at 13%. How much is invested at each rate if the annual interest is $730?
Answer:
$3875 at 5%
$4125 at 13%
Step-by-step explanation:
Let x = amount invested at 5%.
Let y = amount invested at 13%.
x + y = 8000
0.05x + 0.13y = 730
Solve the first equation for x and sustitute into the second one to solve by the substitution method.
x = 8000 - y
0.05(8000 - y) + 0.13y = 730
400 - 0.05y + 0.13y = 730
0.08y = 330
y = 4125
x = 8000 - 4125
x = 3875
Answer:
$3875 at 5%
$4125 at 13%
PLEASE HELP DUE AT 12:00 PM
Answer:
A) 5; B) 32; C) 3; D) 14; E) 1/3
Step-by-step explanation:
Answer:
1. 5
2. 42
3. 3
4. 14
5. 0.3333
Step-by-step explanation:
Third Grade:
8 x 5 = 40
8 + 42 = 40
21 ÷ 7 = 3
21 - 14 = 7
---------------------------21 • x = 7
Which can be written as:
21x = 7
To solve the equation above, we need to remove the 21 on the left side to make the x alone. To do that, we divide both sides by 21.
21x/21 = 7/21
21x/21 is x and 7/21 is 0.3333 which means our equation will look like this:
x = 0.3333
Thus, the answer to "21 times what equals 7?" is 0.3333.
PLEASE HURRY NO LINKS PLEASEEEEEE
Answer:
64
Step-by-step explanation:
-4(m-n)^2
when m=3 and n=-1
-4(3-(-1))^2=
-4(3+1)^2=
-4(4)^2=
-4(16)=-64
correct answer is -64
please mark this answer as brainlist
um....
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Solve four-tenths plus four ninths
Answer:
[tex]\frac{38}{45}[/tex]
Step-by-step explanation:
[tex]\frac{4}{10} +\frac{4}{9}[/tex]
So first you need to have a common denominator (the number on the bottom)
The least common denominator (LCD) would be 90.
So then the fractions would be: [tex]\frac{36}{90} +\frac{40}{90}[/tex].
Add.
You get: [tex]\frac{76}{90}[/tex]
Simplify and the answer is [tex]\frac{38}{45}[/tex]
