Answer:
(2r-1)(2r-5)
Step-by-step explanation:
4r^2-10r-2r+5=0
2r(2r-5)-(2r-5)
(2r-1)(2r-5)
Mary joined the Movie Club while she prepaid $120 for
the year. Every week she watches a movie, it
automatically deduct $5 from her account. How much
money does she left in her account after 15 weeks?
Answer:
$75
Step-by-step explanation:
15x5=$75
The amount of money Mary has left in her account is $ 45
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the total amount of money in Mary's account be = $ 120
The amount of money that gets deducted for each week = $ 5
Total number of weeks elapsed = 15 weeks
So , the equation will be
Total amount deducted after 15 weeks = number of weeks elapsed x amount of money that gets deducted for each week
Total amount deducted after 15 weeks = 15 x 5
= $ 75
Therefore , the equation will be
The amount left in Mary's account = total amount of money in Mary's account - Total amount deducted after 15 weeks
The amount left in Mary's account = 120 - 75
= $ 45
Hence , The amount of money Mary has left in her account is $ 45
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Please help, I will mark you brianliest!
How do the lengths of the sides compare in the triangle below?
Answer:
60. its an equalateral, they all add up to 180
Step-by-step explanation:
HELP PLEASE
Which of the following is closest to the circumference of a circle whose radius is 21 m?
7 m
66 m
132 m
33 m
Answer: 66
Step-by-step explanation: C=rx3x2 C=21x3x2= 66
Solve the simultaneous equations
5x + 3y = 41
2x + 3y = 20
Do not use trial and improvement
The solution to the system of equation is (7, 2)
Using the simultaneous equation:
5x + 3y = 41
2x + 3y = 20
using elimination method
Subtract equation 1 from 2 to have:
5x - 2x = 41 - 20
3x = 21
x = 21/3
x = 7
Substitute x = 7 into equation 1 to get y
5x + 3y = 41
5(7) + 3y = 41
35 + 3y = 41
5y = 41 - 35
3y = 6
y = 6/3
y = 2
Hence the solution to the system of equation is (7, 2)
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what is the slope and y-intercept of y=2x-3
Answer:
slope=2x, y-intercept=-3
Step-by-step explanation:
When in slope intercept, the slope (m) is always the x (and whatever number is in front of it), and the y-intercept (b) is at the end of the equation.
write an equivalent fraction for each whole
Answer:
If the numerator is divisible by the denominator, the fraction is equivalent to a whole number. In other words, if you can divide the numerator by the denominator without any remainder, the fraction is equivalent to a whole number.
Step-by-step explanation:
grrrr i have no idea what this unit is talking about please help
Answer:
SSS Triangle Congruence.
LAST QUESTION PLEASE HELP ME
Answer:
t = 28
Step-by-step explanation:
56 = 2t
t = 56 / 2
t = 28
Hope that helps!
Answer: t= 28
Step-by-step explanation:
Isolate t by dividing both sides by 2.
A truck that is 10 ft. by 12 ft. by 8 ft. carries cube shaped boxes that have a
length of 1.5 ft. How many of these boxes can this truck hold?
Answer:
284.4
Step-by-step explanation:
Divide all numbers by 1.5. example: (10)1.5(12)1.5(81.5= 284.444444 but I rounded it to 284. You're welcome
284 boxes in the shape of the cubes can be fitted in the truck.
If a truck is fitted fully with the cubes, volume of the truck will be equal to the volume of cubes to be fitted.
Dimensions of the truck given in the question,
Length = 10 feet, width = 12 feet and height = 8 feetSince, volume of a cuboid (shape of a truck) is given by the expression,
Volume = Length × Width × Height
Therefore, volume of the truck = 10 × 12 × 8
= 960 feet³
Volume of a cube is given by the expression,
Volume = (side)³
Therefore, volume of the cube with side length 1.5 feet will be,
Volume of a cube = (1.5)³
= 3.375 cubic feet
Let the number of cubes fitted in the truck = x
Therefore, volume of 'x' cubes = (3.375x) feet³
Since, volume of the truck = Volume of the cubes fitted
3.375x = 960
x = [tex]\frac{960}{3.375}[/tex]
x = 284.44
x ≈ 284
Therefore, 284 boxes in the shape of the cubes can be fitted in the truck.
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When solving an equation, Francesca's first step is shown below. Which property
justifies Francesca's first step?
Original Equation:
- 2x + 2 = -4
First Step:
-2x = -6
The property justifies Francesca's first step is subtracting 2.
Here,
Original Equation is,
- 2x + 2 = -4
First step is,
-2x = -6
What is the equation?
An equation is made up of expressions that equal each other.
Now,
Original Equation is,
- 2x + 2 = -4
For find the first step;
-2x + 2 -2 = 4 - 2
-2x = -6
Hence, The property justifies Francesca's first step is subtracting 2.
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Please help me with this first answer gets brainliest
Answer:
multiply both sides by 17
your supposed to do the opposite of the symbol given
Step-by-step explanation:
expand 2x(5x-2)
answer needed asap
Answer:
10[tex]x^{2}[/tex] - 4x
Step-by-step explanation:
Answer:
10x^2-4x
Step-by-step explanation:
I give crown :---))))
Answer:
44 I think
Step-by-step explanation:
um if it's wrong sorry
Mary bought 5 pairs of gloves and 2 hats for $95. Mary received a text from her friend Joanna ask her to buy 4 pairs of gloves and a hat. Mary told Joanna that the cost was $70. How much does each pair of gloves cost? How much does the hat cost?
Answer: Each pair of gloves costs $15 and each pair of hat costs $10.
Step-by-step explanation:
Let x = Cost per pair of gloves
y= Cost per hat.
As per given, we have
[tex]5x+2y=95 \ \ \ \ (i)\\4x+y=70\ \ \ \ \ (ii)[/tex]
Multiply (ii) by 2 , we get
[tex]8x+2y=140\ \ \ \ (iv)[/tex]
Eliminate (i) from (iv), we get
[tex]3x=45\\x=15[/tex]
Put this in (ii), we get
[tex]4(15)+y=70\\60+y=70\\y=10[/tex]
Hence, each pair of gloves costs $15 and each pair of hat costs $10.
can someone help me witth these two questions
Answer:
ok
1st one x=245°
2nd one x= 250
Step-by-step explanation:
hope its correct
hope u find it helpful
Answer:
x = 245 and x = 20
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 5 , then
sum = 180° × 3 = 540°
Sum the interior angles and equate to 540
25 + 112 + 100 + 58 + x = 540
295 + x = 540 ( subtract 295 from both sides )
x = 245
---------------------------------------------------------------
5x + 2 + 3x + 5 + 8x + 8 + 4x + 15 + 5x + 10 = 540
25x + 40 = 540 ( subtract 40 from both sides )
25x = 500 ( divide both sides by 25 )
x = 20
determine the missing value!
Hi there!
missing value: -9
1.Multiply the two negative:
[tex]-2[/tex]·[tex]-4=-8[/tex]
2.Find the value of 72*-8:
[tex]72*-8=-9[/tex]
Therefore, the missing value is -9.
is this an exponential function?
Answer:
I believe so! good luck!
Step-by-step explanation:
Solve for w
-w + 181 = 128
w = ____
CAN SOMEONE HELP PLS
10 + what equals -6.2
PLEASE HELP ME ASAP!!!!!!!!!!!!;))
Seven less than the product of 6 and a number is equal to 8 translates to an equation
Answer:
Answer: No it isn't an equation. Not yet at least.
Step-by-step explanation:
Yes it might well do, but if it does, it needs something on the other side of wherever you put the equal sign.
6x - 7 is all you have so far and you have no idea what comes next. As it is, what you wrote is an algebraic expression.
Genius or Someone PLZ ANSWER THIS QUESTION!!!!
Answer:
B. 2 2/3Step-by-step explanation:
Since its the same line the slope is same:
Slope = vertical distance /horizontal distancex/4 = 2/3x = 4*2/3 x = 8/3 = 2 2/3Correct choice is B
Answer:
B. 2 2/3
Step-by-step explanation:
Hope this will help
FOR 50 POINTS COME ON GUYS!
Hiro painted his room. After 3 hours of painting at a rate of 8 square meters per hour, he had 28 square meters left to paint.
Let y represent the area (in square meters) left to paint after x hours.
Which of the following information about the graph of the relationship is given?
Answer:
Slope and a point that is not an intercept
Let
x ----> the time in hours
y ----> the area (in square meters) left to paint
we know that
Hiro paint at a rate of 8 square meters per hour
The rate is equal to the slope of the linear equation
we have the point (3, 28) ---> After 3 hours of painting, he had 28 square meters left to paint.
therefore
we have
Slope and a point that is not an intercept
Step-by-step explanation:
I hope this helps and pls mark me brainliest :)
Answer:
C - Slope and a point that is not an intercept
Step-by-step explanation:
Khan answer
Write an equation in slope-intercept form of a line with a slope of -2 that goels through the point (4 , 2)
Answer:
y=-2x+10
Step-by-step explanation:
PLEASE HELP- A triangle has vertices A(0, 0), B (9, 4), and C(–2, 10). What are the coordinates of the triangle after a dilation with a scale factor of 1/2 ?
Basically multiply the x and y coordinates of each point by 1/2
For example, I'll do C which is ( -2 , 10 )
-2 * 1/2 = -1 and 1/2 * 10 = 5
The new coordinate is ( -1 , 5 )
Now you can try the other points
:D
You measure 3 inches between your house and the movie theater. How many miles is in from your house to the movie theater?
Answer:
4.734 * 10^-5 miles
Step-by-step explanation:
Given that:
Distance between House to movie theater = 3 inches
Expressing the distance in miles :
Converting inch to miles
1 inch = 1.578 * 10^-5 miles
3 inches = (3 * 1.578*10^-5)
3 inches = 4.734 * 10^-5 miles
help a sister out please!
Answer:
it would be 8 because it is a parallelogram and they are parallel to each other
Step-by-step explanation:
CD=AB
6. A quadrilateral ABCD is drawn to circumscribe a circle. Prove that AB + CD = AD + BC.
Answer:
i not sure sorry ..........
Which expressions are equivalent to g + h + (j + k)? Check all that apply.
g + (h + j) + k
(g + h) + j k
(g + h) + j + k
g + (h j) + k
g h + j k
g (h + j) k
g + h (j + k)
Answer:
According to the associative property of equality: (a + b) + c = a + (b + c) we can see that the parenthesis do not mean anything when we are only doing addition.
So answers 1. and 3. are correct.
Step-by-step explanation:
Answer:
person above seems corect and he said a and c
in triangle ABC with vertices A(4,5),B(-2,1) and C(0,3),E and F are midpoints of sides AB and AC resp . then, find coordinates of E and F
Answer:
The answer is
E=(1, 3)
F=(2,4)
Step-by-step explanation:
When E is midpoint of AB
Then
[tex]e = ( \frac{4 + ( - 2)}{2} . \frac{5 + 1}{2} ) \\ = (1.3)[/tex]
By this way we can find F
[tex]f = ( \frac{4 + 0}{2} . \frac{5 + 3}{2} ) \\ = (2.4)[/tex]
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