Answer:
$68.99
Step-by-step explanation:
This is called percentage decrease:
(100 - 72)% = 28%
246.40 × 28/100
= $68.99
1) 10x + 3y + 5x =
2) 2x + 7y+ 4x+6x? -
3) 9y+3y + 5x =
4) 2y + 7y + 4y + 6y' =
I
5) 8x + y - 2x =
6) x + 7y - 4y +9x?
7) 14x - 3x + 2 y = y + 3x -
8) 5y + 5y + 5y + 5x
What are the answer for these problems you need to simplify the expression by combining like terms
Answer:
Step-by-step explanation:
Terms with same variables are like terms
1) 10x + 3y + 5x
Here, 10x and 5x are like terms. so add them
10x + 5x + 3y = 15x +3y
2)2x + 7y +4x + 6x = 2x + 4x + 6x + 7y = 12x + 7y
3)9y+ 3y +5x = 12y +5x
4)2y +7y +4y +6y = 19y
5)8x + y - 2x = 8x -2x + y = 6x + y
6) x + 7y -4y +9x = x +9x + 7y - 4y = 10x + 3y
8) 5y +5y +5y +5x = 15y + 5x
A cope machine makes 32 copies per minute. How many copies does it make in 4minutes and 15 seconds?
Answer:
136
Step-by-step explanation:
4 times 32 = 128
32/4=8
128+8=136
Answer:
135
Step-by-step explanation:
1. divide 32 by 60 to get how many copies per second
[tex]32/60 = 0.533[/tex]
2. convert 4min and 15 sec to seconds
it is 255 seconds
3. Multiply copies per second by number of seconds
[tex]0.533(255) = 135.91[/tex]
4. Round down to whole number because you can't copy part of a paper
Simplify the expression
(-3+4k) - (-2+ 7k)
Answer: −1−3k
Step-by-step explanation:
Distribute:
(−3+4k)−1(−2+7k)
(-3+4k)+{2-7k}
Eliminate redundant parentheses:
(−3+4k)+2−7k
-3+4k+2-7k
Add the numbers:
−3+4k+2−7k
−1+4k−7k
Add the same term to both sides of the equation:
−1+4k−7k
−1−3k
what is the radius and circumference for this problem?
The product of 5 and the difference of 1 and a number.
Answer:
Simplify.
There's a product, so we are multiplying.
5 x...
The difference of one and a number. The number is a variable, since it could be any number.
1 - x
Let's combine them.
5 x (1 - x)
5(1 - x)
Hope this helped!
Mark this Brainliest, not that it matters.
Good luck :)
2.
aq - 8) = 23
Solve for q.
Sb please help me
Answer: q=31
Step-by-step explanation:
q -8 = 23 Add 8 to both sides
+8 +8
q = 31
Write an equation of the parabola in vertex form.
Answer:
f (x) = a(x - h)2 + k, where (h, k) is the vertex of the parabola. ... When written in "vertex form": • (h, k) is the vertex of the parabola, and x = h is the axis of symmetry.
Answer:
y =0.25(x-4 )^{2}-1
Step-by-step explanation:
The formula of vertex form is as follows:
Y = a(x-h)^2+k
h = the x value for the vertex (in this case it is 4)
k = the y value for the vertex (in this case it is -1)
If you input these into the equation you are left with:
Y = a(x-4)^2-1
To find 'a' I just entered this equation into the Desmos calculator and messed around with the value until the y-intercept was (8,3)
I hope this was able to help! ^_^
Solve: 5^3 a 125 b 25 c 15 d 5
Answer:
Step-by-step explanation:
5^3 = 5 x 5 x 5 = 25 x 5 = 125
answer is a
Find the coordinates of
the midpoint of AB with
endpoints A(3,7) and
B(0,2).
Thank you so much!
Answer:
[tex]M=(\frac{3}2},\frac{9}{2})[/tex]
Step-by-step explanation:
The midpoint is given by the formula:
[tex]M=(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})[/tex]
So we have the two endpoints A(3,7) and B(0,2).
Let's let (3,7) be x₁ and y₁ and let's let (0,2) be x₂ and y₂.
Therefore, our midpoint is:
[tex]M=(\frac{3+0}{2},\frac{7+2}{2})[/tex]
Add:
[tex]M=(\frac{3}2},\frac{9}{2})[/tex]
Or:
[tex]M=(1.5,4.5)[/tex]
And we're done!
Hope this helps!
Answer: (1.5,4.5)
Step-by-step explanation:
For midpoint i have a little cheer to remember the steps it goes," Midpoint, midpoint, what do you do? add them together and divide by two.
so using this problem as an example you would add the y coordinates and the x coordinates and get (3,9) then you divide X and Y by two.
So 3 divided by 2 is 1.5 so that is the X coordinate for the midpoint
and 9 divided by 2 is 4.5 so that is your Y coordinate for the midpoint.
Put it together and your answer is (3.5,4.5)
Point a and point b lie in the coordinate plane what is the midpoint between a (7,-5) and b (9,-1)
Answer:
(-3,8)
Step-by-step explanation:
formula
(y1+y2/2 ,X1+X2/2)
=(-5-1/2 ,7+9/2)
=(-6/2 ,16/2)
=(-3,8)
5(4x−3)−(3x+1)=3(5x+9)+2x
20x - 15 - 3x - 1 = 15x + 27 + 2x
17x - 16 = 17x + 27
17x - 17x = 27 + 16
0 = 43
Since zero is not equal to 43, this equation has no solution.
PLEASE HELP I HAVE A TON OF QUESTIONS AND EVERYTIME I REDO THIS ON THE TEST IT SAYS IM WRONG
Answer: the lengths of the line segments. hope this helps!
Step-by-step explanation:
What is the opposite value of -(-9) ?
Answer:
9
Step-by-step explanation:
two negatives make a positve
Answer:
-9
Step-by-step explanation:
Whenever you are given an expression, first look at it. Since there are two negative signs in the equation, they cancel out, leaving a nine. The opposite value most likely means that the sign is the opposite, so you end up with -9 as the value.
The endpoints of CD are C (4,6) and D(-1,-1). Find the coordinates of the midpoint M.
Coordinates of midpoint M: OD
6 HELP ME PLEASE I REALLY NEED HELP FAST 30 points
Answer:
M = (1.5, 2.5 )
Step-by-step explanation:
Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
[ [tex]\frac{1}{2}[/tex] (x₁ + x₂ ), [tex]\frac{1}{2}[/tex] (y₁ + y₂ ) ]
Here (x₁, y₁ ) = C(4, 6) and (x₂, y₂ ) = D(- 1, - 1) , thus
midpoint = [ [tex]\frac{1}{2}[/tex] (4 - 1) , [tex]\frac{1}{2}[/tex] (6 - 1 ) ] = (0.5(3), 0.5(5) ) = (1.5, 2.5 )
Asap please help me solve this Inequality?
[tex]3(x + 6) - 2(x + 2) \geqslant 10[/tex]
Answer:
[tex]x\geq -4[/tex]
Step-by-step explanation:
So we have the inequality:
[tex]3(x+6)-2(x+2)\geq 10[/tex]
First, distribute:
[tex](3x+18)+(-2x-4)\geq 10[/tex]
Combine like terms:
[tex](3x-2x)+(18-4)\geq 10[/tex]
Add:
[tex]x+14\geq 10[/tex]
Subtract 22 from both sides:
[tex]x\geq -4[/tex]
And we're done!
Dominic is driving on a long road trip. He currently has 10 gallons of gas in his car.
Each hour that he drives, his car uses up 1.25 gallons of gas. How much gas would be
in the tank after driving for 3 hours? How much gas would be left after t hours?
(1.25)t=gallons so 1.25 times the ammound of hours
Arrange the following set of decimal numbers in order from smallest to largest.
0.31, 0.409, 0.414, 0.4186
Answer:
Step-by-step explanation:
0.31=0.3100
0.409=0.4090
0.414=0.4140
0.4186
arranging smallest to largest
0.3100,0.4090,0.4140,0.4186
or 0.31,0.409,0.414,0.4186
HELPPP PLEASEEEE I NEED THE ANSER Select the most precise and correct definition of parallel lines from among those that are given. Choose 1 answer: (Choice A) A Two distinct lines are parallel if one can be rotated to sit on top of the other. (Choice B) B Two distinct lines are parallel if they point in the same direction. (Choice C) C Two distinct lines are parallel if they are in the same plane and never intersect each other.
Answer:
C. Two distinct lines are parallel if they are in the same plane and never intersect each other.
Step-by-step explanation:
Parallel lines are best defined as 2 different lines that are in the same plane and will never intersect each other at any point in the graph.
They are always the same distance apart and will never touch.
So, C is correct
Answer:
C
Step-by-step explanation:
The very definition of parallel lines is that they have the same slope, if they have the same slope, they will never meet.
Find the missing dimensions. Use the scale factor 1 inch:12 feet. A plastic toy bird has a wingspan of 5 inches. What is the actual bird wingspan? USE NUMBERS ONLY Your answer
Answer: 60 feet
Step-by-step explanation:
Fron the question, we have been told to use a scale factor of 1 inch:12 feet. This simply means that 1 inch has been represented to 12 feet of the actual dimension.
We are further told that a plastic toy bird has a wingspan of 5 inches. The actual bird wingspan will therefore be 5 multiplied by 12 feet and this will be:
= 5 × 12 feet
= 60 feet
A plastic toy bird that has a wingspan of 5 inches has an actual bird wingspan of 60 feet
Identify which equation represents a line parallel to the given equation 2x+5=25 asap please
Answer:
10
Step-by-step explanation:
2x(+5)=(25)< subtract 5 to each side
2x=20<divide 2 to 20
x=10
The value of coins in the pockets of several students is recorded. What is the mean of the values: 10, 20, 35, 35, 35, 40, 45, 45, 50.60
a. 10 cents
b. 35 cents
c. 37.5 cents
d. 50 cents
Answer:
36.17
Step-by-step explanation:
Add all and divide by 9
Graph -23 +y = 8.
y
8
9
8+
7+
6+
4+
3+
2+
1+
2
-9-8-7 -6 -5 -4 -3 -2.
1 2 3 4 5 6 7 8 9
-2+
-3+
-4+
-5+
-6t
-7+
Answer:
in the proprety of the number of negs and postive and y the graph -23+y=8 being that the nuber is -15
The circumference of a circle is 6n meters. What is the diameters? Explain
Answer:
~1.909859317n
Step-by-step explanation:
Diameter = circumference divided by pi. 6/pi = 1.909859317
Answer:
Step-by-step explanation:
Circumference of a circle = 6π meters
πd = 6π {Here, d is the diameter}
[tex]d=\frac{6\pi }{\pi }[/tex]
d = 6 meters
How are linear equations and linear inequality similar and different?
Answer:
The graph of linear inequalities include a dashed line if they are greater than or less than but not equal to. Linear equations, on the other hand, include a solid line in every situation. Moreover, linear inequalities include shaded regions whereas linear equations do not.
Step-by-step explanation:
Please solve -21+6x=3(3x-5)-x
Answer:
x=-3
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
−21+6x=3(3x−5)−x
−21+6x=(3)(3x)+(3)(−5)+−x(Distribute)
−21+6x=9x+−15+−x
6x−21=(9x+−x)+(−15)(Combine Like Terms)
6x−21=8x+−15
6x−21=8x−15
Step 2: Subtract 8x from both sides.
6x−21−8x=8x−15−8x
−2x−21=−15
Step 3: Add 21 to both sides.
−2x−21+21=−15+21
−2x=6
Step 4: Divide both sides by -2.
−2x
−2
=
6
−2
b5c8 divided by b3c2
Step-by-step explanation:
b×5×c×8/b×3×c×2
5/3×4
the answer is 20/3
is -17.84 a rational number?
Answer:
yes
Step-by-step explanation:
-17.84 can be written as a/b where a and b are integers
-1784/ 100
This is a rational number
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 grams of an alloy that contains 52% copper with 78 grams of pure copper.
Answer:
mass of copper in the resulting mixture = 104 grams of pure copper
Percent of the resulting mixture that is copper = 81.25%
Step-by-step explanation:
The complete question is
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 grams of an alloy that contains 52% copper with 78 grams of pure copper. How many grams of copper are in the resulting mixture? What percent of the resulting mixture is copper?
The original alloy has a mass of 50 grams,
52% of this 50 grams is copper,
mass of copper = 0.52 x 50 = 26 grams
78 grams of pure copper added will bring the mass of copper to..
mass of copper = 26 + 78 = 104 grams of pure copper
After adding 78 grams of copper to the alloy, the resultant mass of the mixture will be = original mass of alloy + mass of the pure copper added
==> 50 + 78 = 128 grams
Percentage of the resulting mixture that is copper = (total mass of copper in the mixture/total mass of mixture x 100%)
==> 104/128 x 100% = 81.25%
How is 80.106 written in expanded form?
The expanded form representation of the decimal number given as in the task content is; (8×10) + (0×1) +(1 ×0.1) +(0×0.01) + (6×0.001).
What is the expanded form of the decimal number as given in the task content?It follows from the task content that the number given is; 80.106.
Hence, the expanded form is;
(8×10) + (0×1) +(1 ×0.1) +(0×0.01) + (6×0.001)
Read more on expanded form;
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7y ^3 −7x^3 +4−5+6−3x^3 +6x^3
Combine Like Terms
Answer:
-4x^3 + 7y^3 + 5
Step-by-step explanation:
7y^3 - 7x^3 + 4 - 5 + 6 - 3x^3 + 6x^3 Given
7y^3 - 7x^3 - 3x^3 + 6x^3 + 4 - 5 + 6 Rearrange
7y^3 - 4x^3 + 5 Combine the like terms
or
-4x^3 + 7y^3 + 5 Answer