Answer:
8x^2-6x+15
Step-by-step explanation:
Step-by-step explanation:
8x^2-6x!15. that's the answer
Solve the quadratic equation.
Answer:
Step-by-step explanation:
-9 + sqrt(9^2 - 4(1)(-36)
2
-9 + sqrt(81 + 144)
2
-9 + sqrt(225)
2
-9 + 15
2
(-9 + 15)/2 = 6/2 = 3
(-9 - 15)/2= -24/2= -12
answer is B
Answer:
[tex]x = 3, x = -12[/tex]
Step-by-step explanation:
Hello!
We can factor the quadratic by grouping. We have to find two numbers that add up to 9 but multiply to -36.
The two numbers are 12 and -3. Expand 9x to 12 x and -3x.
Factor by Grouping[tex]x^2 + 9x - 36 = 0[/tex][tex]x^2 +12x - 3x -36 = 0[/tex][tex]x(x + 12) - 3(x + 12) = 0[/tex][tex](x - 3)(x + 12) = 0[/tex][tex]x = 3, x = -12[/tex]The answer is Option B. x = 3 or -12.
help solve please! (image)
Answer:
4
Step-by-step explanation:
[tex](20-2^{2} )[/tex] ÷ [tex](6-2)[/tex]
(20-4) ÷ 4
16 ÷ 4=4
Answer:
2
Step-by-step explanation:
Here we're "evaluating," not solving, the given expression.
Substitute -2 for x and 6 for y:
20 - (-2)^2 20 - 4
--------------- = -------------- = 16/8 = 2
(6) - (-2) 8
The value of this expression, when x = -2 and y = 6, is 2.
Find the slope of the line.
Answer:
1
Step-by-step explanation:
it can't be 2 because a slope is always in the mid or after a starting point I think..
Hello there! (:
To find the slope of this graph, we must calculate the rise over the run.
The rise is the amount of units we move up or down; the run is the amount of units we move right or left.
So here, we move 2 units up and 4 units to the right:
[tex]\frac{2}{4}[/tex]
We can reduce our fraction (divide the top and bottom by 2):
[tex]\frac{1}{2}[/tex]
Hope it helps! Please mark Brainliest; I would really appreciate that! (:
~SparklingFlower (:
given that any function of f(x)=x+a/x, where a and can be any value,will have the inverse of the form f^-1(x)=a/x-1
find the inverse of f(x)=x+4/x
please add your working
If f^(-1) is the inverse of f, then
f(f^(-1)(x)) = x
It looks like f(x) = (x + a)/x. This gives us
f(f^(-1)(x)) = (f^(-1)(x) + a)/f^(-1)(x) = x
Solve for f^(-1)(x) :
f^(-1)(x) + a = x f^(-1)(x)
f^(-1)(x) - x f^(-1)(x) = -a
(1 - x) f^(-1)(x) = -a
f^(-1)(x) = -a/(1 - x)
f^(-1)(x) = a/(x - 1)
If a = 4, then the inverse is f^(-1)(x) = 4/(x - 1).
how to solve: -4(2x - 5) = 3x -13
~one variable linear equation
==============================
-4(2x - 5) = 3x - 13
= -8x + 20 = 3x - 13
= -8x + 20 - 3x = -13
= -8x - 3x = -13 - 20
= -11x = -13 - 20
= -11x = -33
= x = -33 ÷ -11
= x = 3 ✔️
~ nice to help you ^^
Colin had b books. Then he went to a book sale and bought 35 more books. Choose the expression that shows how many books Colin has now.
Answer:
b + 35 = x (or any other variable)
Step-by-step explanation:
\
Answer:
b + 35 = ??
Step-by-step explanation:
or something like that you would do b plus 35 to find how much he has now.
6.1% of 40 is what number
Answer:
2.44
Explanation:
The number of 6.1% of 40 is 2.44.
10. Nine more than three times a number is -6._
a
Answer:
3n + 9 = -6
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let the number = x
3x + 9 = 2x - 6 Looks like you are going to get something negative here.
Subtract 2x from both sides.
3x - 2x + 9 = 2x - 2x - 6
x + 9 = -6
Subtract 9 from both sides.
x + 9 - 9 = - 6 - 9
Combine
x = - 15
HEEELLLPPPPPPPPP THIS IS HARD TO UNDERSTANDDDDDDDD
C=2πr 的替代公式是 C=πd。
这是直径，是给定的测量值。
这意味着我们可以：
C = π*20 = 62.8ft
本题已由中国数学会官方解答（现有会员：3人）
What does 4+24÷-6×2=
Answer:
-2, as the expression is written
Step-by-step explanation:
It depends on how one interprets the expression. The expression, as written, is:
4+24÷-6×2=
A fundamental rule in math is known as PEMDAS. This acronym describes the order of operations that are to be followed when solving mathematical expressions. PEMDAS stands for
P- Parentheses,
E- Exponents,
M- Multiplication,
D- Division,
A- Addition, and
S- Subtraction.
The use of parentheses is critical in math expressions, as we will see here.
The are no parentheses in "4+24÷-6×2=." So we will follow the steps are shown above:
Multiplication: 4+24÷-6×2 = 4+24÷-12
Division: 4+24÷-12 = 4+-2
Addition: 4+-2 = 2
The expression as written is equal to 2.
But if parentheses were included in the origianl proble, the answer might be different. For example:
(4+24)÷-6×2=
Parentheses: (4+24)÷-6×2= (28)÷-6×2=
Multiplication: (28)÷-6×2= (28)/-12
Division: (28)/-12 = -2.333 . . .
5/9 of 7m limit, 2/7 of how many meters?
Answer:
1.1 m limit
Step-by-step explanation:
5/9*2/7=10/63
10/63*7 =70/63
= 1.1 m
Compound interest! Compound semiannually please
how to understand how to do volumn
Answer:
how tu understand what?
Answer:
To determine a cylinder's volume, you'll need to know its height and the radius of the circular base (the distance between the circle's center and its edge) at both the top and bottom. V = r 2 h is the formula, with V denoting volume, r denoting the radius of the circular base, h denoting height, and pi denoting the constant.
Step-by-step explanation:
Hope this helps! :)
Find the area of the figure.
jessica saves quarters and dimes in a jar.She uses the expression 0.25q+0.1d to find the value of the coins the variable q is the number of quarters and the d is the number of dimes.Find the value of the coins when jessica has 18 quarters and 15 dimes.Show your work
Answer:
$6.00
Step-by-step explanation:
Total amount of money = 0.25q + 0.1d
where q is the number of quarters and d is the number of dimes
The problem states we have 18 quarters: d = 18
And that there are 15 dimes: d = 15
Plugging it in we get
= 0.25(18) + 0.1(15)
= 4.5 + 1.5
= 6.0
What is the square foot area of a room with a length of 10¾ feet and a width of 8½ feet?
Answer:
91 3/8
Step-by-step explanation:
10 3/4 x 8 1/2 = 91 3/8
If the probability of an event is 2/7, then the probability of the complement is:
9514 1404 393
Answer:
5/7
Step-by-step explanation:
If the probability of an event is p, the probability of the complement of the event is ...
q = 1 -p
q = 1 -2/7 = 5/7
The probability of the complement is 5/7.
PLEASE HELP MEEEEE
An electronics retailer sells a washing machine at cost price (how much the retailer paid for it) of $400 with a profit of 20%. What price does the customer pay?
Answer:
$480
Step-by-step explanation:
They sold the machine for $400 but made a profit of 20%.
This mean you would take 400 × .20
This gives you 80
That means the retailer got an extra 20% or $80
for the washing machine.
$400 + $80 = $480
A ten year old girl was 4 feet and 9 inches , simce then , she has grown 5 inches tall, how tall is she.?
Answer: 14
Step-by-step explanation:
Write fractions in simplest form 9/10 + (-3)
Answer:
-2.1=Step-by-step explanation:
f f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x))? On a coordinate plane, a straight line has a positive slope and goes through (negative 2, negative 1), (0, 0), and (4, 2). On a coordinate plane, a straight line has a positive slope and goes through (negative 3, negative 3), (0, 0), and (3, 3). On a coordinate plane, a straight line has a negative slope and goes through (negative 4, 2), (0, 0), and (4, negative 2). On a coordinate plane, a straight line has a negative slope and goes through (negative 3, 3), (0, 0), (3, negative 3).
Using inverse function concepts, it is found that the graph of f(g(x)) is given as follows:
On a coordinate plane, a straight line has a positive slope and goes through (-3,-3), (0, 0), and (3, 3).
What happens when two inverse functions are composed?When two functions f(x) and g(x), that are inverse of one another, are composed, that is, y = f(g(x)), the resulting function is given by:
y = x.
Hence the graph of f(g(x)) is given as follows:
On a coordinate plane, a straight line has a positive slope and goes through (-3,-3), (0, 0), and (3, 3).
More can be learned about inverse functions at https://brainly.com/question/8824268
#SPJ1
the measures of the angles of a triangle are shown in the figure below. solve for x.
Answer:
33
Step-by-step explanation:
A bakery prepares boxes of desserts. Each box contains twice as many cookies as brownies. Which line on the graph depicts the number of cookies relative to the number of brownies?
a(first screenshot
b(second screenshot
c( third screenshot
d(fourth screenshot
Answer: First graph.
Step-by-step explanation:
Let C be the number of cookies, and B the number of brownies.
Each box has 2B = C [2 brownies and 1 cookie]
Box B C
1 2 1
2 4 2
3 6 3
4 8 4
Graph 1 matches this data. A line with a slope of 2.
If you can start a game every 2 minutes, and you get paid $40 for every 100 games, What is the least amount of time it
will take for you to earn at least $900
:
fyubwagcduysrewucf ac VYRVYVFYEVEY FGVEGOWFVGEWVdyVWUVyigygdgvfvgfvew fbqy vwfyv
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
what multiplies to get -160 and adds to get 36
Answer:
-36/161
Step-by-step explanation:
-160 · x = 36 + x
I hope that this helps!
pls help if ur good at math
Answer:
-3
Step-by-step explanation:
Answer:
y= -1/2 x -8
Step-by-step explanation:
as following the two points,
formula must be y=mx+b
slope= - (1/2) x
b= -8
please help asap, find the value:
Answer:
13
Step-by-step explanation:
f(7)=2(7)-1
f(7)=14-1
f(7)=13
Please help me
Solve for X
Answer:
x = 10°
Step-by-step explanation:
45 + 20x - 65 = 180°
=> -20 + 20x = 180°
=> 20x = 200
=> x = 10°
Hoped this helped.
PLZ HELP!!!!!!!!
what is 5 x 2 + 7² = ???
Answer:
The Answer is 59
Step-by-step explanation:
5*2+7^2
=5*2+49
=10+49
=59
I hope that you have found this answer to be helpful. Have a wonderful day.
Heyy I'm Chloe, can you guys help me with this question *brainlest, THANK YOU <3
Write an expression to model the following situation: A submarine was 12 m below sea level. It descended 40 more meters.
What is its new position below sea level?
A.) 12 – 40
B.) –12 + 40
C.) 12 + 40
D.) –12 – 40
