Answer:
-x - 3
Step-by-step explanation:
(3x - 4) - (4x - 1) =
The first set of parentheses is unnecessary, so you can just remove it.
= 3x - 4 - (4x - 1)
To remove the second set of parentheses, you must distribute the negative sign to its left by the terms inside the parentheses. To do this, change every sign inside the parentheses.
= 3x - 4 - 4x + 1
Now combine like terms. Terms with x are like terms and are combined together. Therms without x are like terms and are combined together.
= 3x - 4x - 4 + 1
= -x - 3
Round each decimal number to the nearest tenth. Then, select the best estimate for the addition equation 3.14 + 0.62 = ___.
Answer:
3.7
Step-by-step explanation:
3.14 + 0.62 = ___.
Step 1
Round each decimal to the nearest tenth
3.14 to the nearest tenth = 3.1
0.62 to the nearest tenth = 0.6
Step 2
Solve the addition equation
= 3.1 + 0.6
= 3.7
Answer:
3.7
Step-by-step explanation:
3.14 + 0.62 = ___...........
Step 1
Round each decimal to the nearest tenth
3.14 to the nearest tenth = 3.1
0.62 to the nearest tenth = 0.6
Write the equation of the line that is parallel to the line y = 3/2 x + 5 and passes through the point (4,1).
Answer:
m=3/2
y-1=3/2(x-4)
y-1=3/2 x-6
y=3/2 x -5
Step-by-step explanation:
slope of tangent line is equal to slope of line that parallel
Please help, solve for x and n
Answer:
1. [tex] \boxed{ \bold{ \huge{ \boxed{ \sf{x = 1}}}}}[/tex]
2. [tex] \boxed{ \bold{ \huge{ \boxed{ \sf{n = - 5}}}}}[/tex]
Step-by-step explanation:
1. [tex] \sf{ \frac{6}{x + 1} = \frac{3}{x} }[/tex]
Do cross multiplication
[tex] \dashrightarrow{ \sf{6x = 3(x + 1)}}[/tex]
Distribute 3 through the parentheses
[tex] \dashrightarrow{ \sf{6x = 3x + 3}}[/tex]
Move 3x to left hand side and change it's sign
[tex] \dashrightarrow{ \sf{6x - 3x = 3}}[/tex]
Collect like terms
[tex] \dashrightarrow{ \sf{3x = 3}}[/tex]
Divide both sides by 3
[tex] \dashrightarrow{ \sf{ \frac{3x}{3} = \frac{3}{3} }}[/tex]
Calculate
[tex] \dashrightarrow{ \sf{x = 1}}[/tex]
The value of x is 1
---------------------------------------------------------------------
2. [tex] \sf{ \frac{2}{6} = \frac{2n + 8}{n - 1}} [/tex]
Do cross multiplication
[tex] \dashrightarrow{ \sf{2(n - 1) = 6(2n + 8)}}[/tex]
Distribute 2 through the parentheses
Similarly, distribute 6 through the parentheses
[tex] \dashrightarrow{ \sf{2n - 2 = 12n + 48}}[/tex]
Move 12n to left hand side and change it's sign
Similarly, move 48 to right hand side and change it's sign
[tex] \dashrightarrow{ \sf{2n - 12n = 48 + 2}}[/tex]
Collect like terms
[tex] \dashrightarrow{ \sf{ - 10n = 48 + 2}}[/tex]
Add the numbers : 48 and 2
[tex] \dashrightarrow{ \sf{ - 10n = 50}}[/tex]
Divide both sides by -10
[tex] \dashrightarrow{ \sf{ \frac{ - 10n}{ - 10} = \frac{50}{ - 10} }}[/tex]
Calculate
[tex] \dashrightarrow{ \sf{n = - 5}}[/tex]
The value of n is -5 .
Hope I helped!
Best regards! :D
on a random Monday in the spring, 95% of students are present at school. if there are 589 students present, then how many students are enrolled?
Answer:
620
Step-by-step explanation:
95% × 620 =
(95 ÷ 100) × 620 =
(95 × 620) ÷ 100 =
58,900 ÷ 100 =
589;
The ratio of boys to girls in a classroom is 15 to 12. What is the ratio of boys to total students in the classroom.
Answer:
Step-by-step explanation:
15 boys + 12 girls = 27 students
15:27 = 5:9
First, add to find total number of students.
15 + 12 = 27
Second, create the new ratio.
15 to 27
Best of Luck!
Which function has an inverse that is also a function?
{(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)}
{(–4, 6), (–2, 2), (–1, 6), (4, 2), (11, 2)}
{(–4, 5), (–2, 9), (–1, 8), (4, 8), (11, 4)}
{(–4, 4), (–2, –1), (–1, 0), (4, 1), (11, 1)}
Answer:
A. {(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)}
Step-by-step explanation:
I just did the quiz but basically you can switch the coordinates around to view the coordinates of the inverse function. If there are x values that are the same number, it does not pass the line test making it not a function with an inverse function.
The function has an inverse that is also a function will be {(–4, 3), (–2, 7), (–1, 0), (4, –3), (11, –7)} so correct option will be (A).
What is a function?A certain kind of relationship called a function binds inputs to essentially one output.
The machine may only produce one output for each input and will only accept inputs that are specifically listed as part of the function's domain.
In other words, the function is a relationship between variables and the nature of the relationship.
In the given question
We know that a function is only a function such that there is a unique value of y corresponding to x.
An inverse function will only be a function if the function which is going to be inverse is a function.
In option (A) all value of x corresponding to y are different but in all remaining options the values are repeating hence that will be not a function since only (A) has to inverse
For more about the function
brainly.com/question/23712366
#SPJ6
5.4 x 28.7 =
What is the answer
Answer:
154.98
Step-by-step explanation:
Answer:
155(estimated to 3 s.f) 154.98(exact value)
Step-by-step explanation:
Very nice question bro
Solve the absolute value equation [x] - 2 = 5 to find the distance Mary can walk forward, x, in
5 seconds.
x = 7 m and x = -7 m
x=-3 m and x = 7 m
x = -7 m and x = 3 m
x = 3 m and x = -3 m
Answer:
the answer is x=7 and x=-7
Step-by-step explanation:
Can you help me with this I don’t know how to do it
Answer:
67,900
Step-by-step explanation:
Move the decimal place 4 spaces to the right.
Answer:
it is for sure 67,900 :)
Step-by-step explanation:
(WILL MARK BRAINLIEST PLEASE HELP!) Rule for reflecting 90, 180, 270, and 360 degrees clockwise (reflection not rotating please)
Answer:
Rotation of 90° (x, y) → ( ‐ y, x )
Rotation of 180° (x, y) → ( ‐ x, ‐ y )
Rotation of 270° (x, y) → ( y, ‐ x )
idk 360...
Find f(k - 1) when f(x) = 5x^2+ 4x – 5.
Plug in [tex]k-1[/tex] to each [tex]x[/tex] in the function.
[tex]f(k-1)=5(k-1)^2+4(k-1)-5[/tex]
[tex]f(k-1)=5(k^2-2k+1)+4k-4-5[/tex]
[tex]f(k-1)=5k^2-10k+5+4k-4-5[/tex]
[tex]f(k-1)=5k^2-6k-4[/tex]
Hope this helps.
頑張って!
f(k-1) = 5k² - 4k - 4
The given function is:
f(x) = 5x² + 4x - 5
To find f(k-1), substitute x = k-1 into f(x)
f(k-1) = 5(k-1)² + 4(k-1) - 5
f(k-1) = 5(k² - 2k + 1) + 4k - 4 - 5
f(k -1) = 5k² - 10k + 5 + 4k -9²
Collect like terms
f(k-1) = 5k² - 10k + 5k + 5 - 9
Simplify
f(k-1) = 5k² - 4k - 4
Learn more here: https://brainly.com/question/11624077
Write an equation that represents the line.
Use exact numbers.
Answer:
y=(7/5)x + 34/5
Step-by-step explanation:
All straight lines generally follow the equation format of: y=mx+c
Where m is the slope/gradient of the line, and c is a constant, the y-intercept, the y value when x=0.
To start, we need to find the slope, which we do by dividing the rise of the line by the run, that is the difference between the y value of two points divided by the different between the x value of two points.
We can use the two given points on the graph: (-7,-3) and (-2,4).
The rise is 7 because 4-(-3)=7, and the run is 5 because -2-(-7)=5.
Therefore the slope is 7/5.
so our equation so far is:
y=(7/5)x + c, (It is positive because the line is 'going upwards'.)
Now to find the c, we can just substitute in a pair of coordinates, we can use (-2,4):
4= (7/5)(-2) + c
4 = -14/5 + c
4 + 14/5 = c
c= 34/5
Therefore our full equation is:
y=(7/5)x + 34/5
Hope this helped!
I need a expression for the area of the shaded region.
Answer:
the shaded area= s²-2πr²
Step-by-step explanation:
you have 2 circles
Area of circle=πr²
2 circles=πr²+πr²=2πr²
the area of square=s*s=s²
the shaded area= s²-2πr²
y+9÷2=y-3÷4-(y/3)
pls help
Answer:
y = - [tex]\frac{63}{4}[/tex] or - 15.75
Step-by-step explanation:
Order of operations.
y + [tex]\frac{9}{2}[/tex] = y - [tex]\frac{3}{4}[/tex] - [tex]\frac{y}{3}[/tex] Subtract y from each side.
y - y + [tex]\frac{9}{2}[/tex] = y - y - [tex]\frac{3}{4}[/tex] - [tex]\frac{y}{3}[/tex]
[tex]\frac{9}{2}[/tex] = - [tex]\frac{3}{4}[/tex] - [tex]\frac{y}{3}[/tex] Add [tex]\frac{3}{4}[/tex] to each side
[tex]\frac{9}{2}[/tex] + [tex]\frac{3}{4}[/tex] = - [tex]\frac{3}{4}[/tex] + [tex]\frac{3}{4}[/tex] - [tex]\frac{y}{3}[/tex]
[tex]\frac{9}{2}[/tex] + [tex]\frac{3}{4}[/tex] = - [tex]\frac{y}{3}[/tex] Find the common denominator for [tex]\frac{9}{2}[/tex] and [tex]\frac{3}{4}[/tex], which is 4
[tex]\frac{9}{2}[/tex] * [tex]\frac{2}{2}[/tex] + [tex]\frac{3}{4}[/tex] = - [tex]\frac{y}{3}[/tex]
[tex]\frac{18}{4}[/tex] + [tex]\frac{3}{4}[/tex] = - [tex]\frac{y}{3}[/tex]
[tex]\frac{21}{4}[/tex] = - [tex]\frac{y}{3}[/tex] Multiply each side by 3
[tex]\frac{21}{4}[/tex] * 3 = - [tex]\frac{y}{3}[/tex] * 3
[tex]\frac{63}{4}[/tex] = - y Divide each side by -1
y = - [tex]\frac{63}{4}[/tex] = - 15 [tex]\frac{3}{4}[/tex]
y = - 15.75
Step-by-step explanation:
There are 2 scenarios below. One without parenthesis and the second with. I believe the second one is your question.
y+9÷2=y-3÷4-(y/3)y - y + y/3 = - 3/4 - 9/2 ⇒ combining like termsy/3 = -3/4 - 18/4y/3 = -21/4y = -21/4*3y = -63/4y = - 15 3/4===============
(y+9)÷2=(y-3)÷4-(y/3)12*(y+9)/2 = 12* (y-3)/4 - 12*y/3 ⇒ this is to get rid of fraction6(y+9) = 3(y-3) - 4y6y + 54 = 3y - 9 - 4y6y + 54 = - y - 96y + y = - 9 - 547y = - 637y/7 = -63/7y = -9The highest ever recorded temperature on earth was 136°F in the US and the lowest was − ° 129 F in Antarctica. What is the difference of these temperatures recorded on Earth?
Answer:
136 + 129= 265
Step-by-step explanation:
when you're finding the difference and one number is positive and the other is a negative number you will add the negative instead of add them together so you would 129 to 136 which would equal 265. this rule applies to the opposite too. if both numbers are positive, then you would subtract them.
Simplify the equation -4(2x-4)
Answer:
-8x + 16
Step-by-step explanation:
This is called expanding brackets in algebra
1. you need to multiply the numeral on outside of the brackets with each of thosse on the inside
-4 x 2x = 8x
-4 x -4 = 16
Step 1: 4r +5 = 7
Step 2: 4x = 2
1
Step 3: x = }
1 2
The property that was used in step 1 was the
The property that was used in step 2 was the
The property that was used in step 3 was the
Answer:
1- r=.5
2- x=.5
Step-by-step explanation:
sorry my handwriting is bad
If someone can guess whether I live in an apartment condo or house? Also, what floors do I have? 3, 2, and 4. Choose ALSO, I'll mark as brainliest
Answer:
house 3 floors
Step-by-step explanation:
i'm totally guessing i'm most likely wrong
w(n)=n-1; find w-(4)
Answer:5
Step-by-step explanation:
w(n)=4-1
=5
four and five thousand three ten-thousandths
Write the number
Answer:
4.0503
Step-by-step explanation:
A skier is trying to decide whether or not to buy a season ski pass a daily pass cost $63 a season ski pass cost $350 to scare would have to rent skis with either a pass for $25 per day how many days with the skier have to go skiing in order to make the season pass less expensive than the daily pass
Answer:
um
Step-by-step explanation:
I NEED HELP ON THIS!! Solve for y: 3(2x+5)+4y=3(y-2x)+10
Answer:
10
Step-by-step explanation:
Begin with x3 + y3 = 4 . Differentiate both sides of the equation, getting
D ( x3 + y3 ) = D ( 4 ) ,
D ( x3 ) + D ( y3 ) = D ( 4 ) ,
(Remember to use the chain rule on D ( y3 ) .)
3x2 + 3y2 y' = 0 ,
so that (Now solve for y' .)
3y2 y' = - 3x2 ,
.
4x - 10=-2
Solve for x
Answer: x=2
hope this helps!
Find the least common multiple of 3, 6 and 15
Answer: 30
Step-by-step explanation:
*Multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, ..., 30
* Multiples of 6: 6, 12, 18, 24, 30
* Multiples of 15: 15, 30
How many intersecting planes are there in a cube?
Answer: a cube is a three-dimensional solid object bounded by six square faces, facets or sides, with three meeting at each vertex. The cube is the only regular hexahedron and is one of the five Platonic solids. It has 6 faces, 12 edges, and 8 vertices.
Step-by-step explanation:
Answer:
The cube has nine symmetry planes. Three planes lie parallel to the side squares and go through the centre (picture). Six planes go through opposite edges and two body diagonals. They divide the cube into prisms
Help with this math problem 4/3•5/2
Answer:
The answer is 10/3 or 3 1/3
Step-by-step explanation:
Hope this helps
Write the expression for the perimeter of the triangle below.Simplify.Must show work(Formula for Perimeter is P=S+S+S)
Answer:
4x
Step-by-step explanation:
P = S + S + S
P = x + x + 3 + 2x - 3
P = 4x
Two numbers have a sum of 2 and a difference
of -16. What are the numbers?
Answer:
-7 & 9
Step-by-step explanation:
(-7) + 9 = 2
(-7) - 9 = -16
x + y = 2
x - y = -16
Add the equations together to eliminate one of the variables.
2x = -14
Divide both sides by 2
x = -7
Let's plug -7 into x for our first equation.
-7 + y = 2
Add 7 to both sides.
y = 9
I need to find the slope of the line
Answer:
4/1
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
because if you go from one point to the next, it is 4 up and 1 across, therefore 4/1, or 4 :)
Solve for X. x squared = 49 show your work
Answer:
+ 7 or - 7
Step-by-step explanation:
x^2 = 49
x = (49)^1/2 (1/2 means nothing but square root)
x = + or - 7
I said this answer because you square 7 and -7 and still get 49