Answer:
2800p
Step-by-step explanation:
The cost of 3/4 of the chocolates is £40.
What is the unitary method?The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
We are given that David buys 80 chocolate for £20 He sells 3/4 of the chocolates for 40p each
He then sells the remaning for 20p each.
Therefore,
80 chocolate = £20
one chocolate = 20/80 = £0.25
Then 3/4 of the chocolates = 40p
3/4 x 80 = 40p
60 = 40p
The remaning chocolates are;
80 - 60 = 20
Then 20 = 20p
p = 1
so, He sells 3/4 of the chocolates for £40.
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Which algebraic expression is equivalent to the expression below?
9x + 15y
alfonzo buys a drill for $28.80 which is 20 off the original price. what is the original price?
Answer:The answer is 36.
Step-by-step explanation:
Because 20% of 36 is equal to 7.2
And 36 - 7.2 = 28.80
Answer:
100/80×28.80=$36
Step-by-step explanation:
Solve the system by graphing:
y2 - 2 - 44 = 0
x - 2y = 4
Enter the coordinate with the least x-value first.
Answer:
Step-by-step explanation:
its c
Write PQ−⇀− with P(2,−4) and Q(3,6) in component form.
Answer:
1,10
Step-by-step explanation:
The initial point of the vector is P(2,−4) and the terminal point of the vector is Q(3,6).
Subtract the coordinates of the initial point from the coordinates of the terminal point.
PQ−⇀−=<xQ−xP,yQ−yP>
Substitute the coordinates of the given points.
PQ−⇀−=<3−2,6−(−4)>
Simplify.
PQ−⇀−=<1,10>
Therefore, the component form of vector PQ−⇀− is <1,10>.
The component form of the vector is A = i + 10j , PQ = < 1 , 10 >
What is the component form of a vector?The i,j notation can be used to describe a vector. In Cartesian coordinates, the unit vectors along the axis are represented by the letters I and j, respectively.
A unit vector is a vector of length 1. It is possible to express any two-dimensional vector in the manner ai + bj.
To find the vector in component form given the initial and terminal points, simply subtract the initial point from the terminal point.
Given data ,
Let the component form be represented as A
Let the first point be represented as P
Now , the coordinates of the initial point = P ( 2 , -4 )
The coordinates of the terminal point is = Q ( 3 , 6 )
And , the vector in component form given the initial and terminal points, simply subtract the initial point from the terminal point.
So , on simplifying , we get
A = PQ = ( 3 - 2 ) i + ( 6 - ( - 4 ) ) j
PQ = i + 10j
PQ = < 1 , 10 >
Therefore , the value of A is i + 10j
Hence , the component form is PQ = < 1 , 10 >
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What is the slope? What is the Y- intercept? And what is the Equation
Answer:
Step-by-step explanation:
y-intercept⇒(0,4)
slope⇒ 2 over 1
equation⇒ y=2x+4
Pls help me with this question I will mark brainiest.
Answer:
where is the question
Step-by-step explanation:
Answer:
Just wondering, where is the question?
Step-by-step explanation:
Find the slope of the image
Select the ordered pair that is a solution of the system of liner equations
Answer:
i think it's (2, 1)
Step-by-step explanation:
CAN ANYONE HELP ME? :)
-5h - 2
that's really it ;-;
Write the correct way that you should read 10.8
Answer:
ten and eight tenths
Hope I helped! :)
Step-by-step explanation:
HELLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPP
Answer:
B
Step-by-step explanation:
I need help with this math
Answer:
question? haven't learn this yet but try asking desmos that app helps me a lot!
please help!!!!!!!!!!!!!!!!!!
Answer:
E
Step-by-step explanation:
carter has 7,500 in a bank account that earns 3% simple interest per year. how much will be in the account after 5 years
Answer:
11.25
Step-by-step explanation:
7500 times 0.03 times 5 = 1125
1125 divided 100 = 11.25
simple interest formula = Amount times Rate times Time
Divide 100
Harry has a rectangular deck that was 10 ft by 12 ft. He wants to increase the length and width by the same amount and add 75 square feet to the total area.
Answer:
The additional length is 3 ft
The new length of the rectangle after the increase is 15 ft and the width 13 ft
Step-by-step explanation:
The area A of a rectangle is given as
A = L * B
where L is the length of the rectangle and B is the width
As such for a rectangle 10 ft by 12 ft, the area
= 10 * 12
= 120 sq ft
If this is increased by 75 sq ft, the new area becomes
= 120 + 75
= 195 sq ft
If the length and the width are to be increased by the same amount, let this amount be x then the new length will be 12 + x and width 10 + x such that
(12 + x)(10 + x ) = 195
expand
x² + 22x + 120 = 195
x² + 22x +120 - 195 = 0
x² + 22x - 75 = 0
x² +25x -3x - 75 = 0
x(x +25) -3(x + 25) = 0
(x + 25) (x- 3) = 0
x = -25 or 3
since the additional length cannot be negative, it is 3ft.
As such the new length
= 3 + 12 = 15 ft
the new width
= 10 + 3
= 13 ft
another multiple-choice question! which one?
Answer:
the second one
Step-by-step explanation:
plzzzz helppp..will give brainliest.
9x + 15 = 3x + 15 x=
Answer:
x=3
Step-by-step explanation:
9x+15=3x+15
subtract 15 from both sides
9x=3x
divide by 3 from both sides
x=3
solve the following systems b elemination show work and explain each step 3x + y = 13 4x - 3y = 13
Answer:
x = 4
y = 1
Step-by-step explanation:
Here, we want to solve the system of equation using elimination method
We have this as follows;
3x + y = 13
4x- 3y = 13
Multiply equation 1 by 3
9x + 3y = 39
4x-3y = 13
Add the two equations
13x = 52
x = 52/13
x = 4
From equation 1;
3x + y = 13
y = 13-3x
y = 13-3(4)
y = 13-12 = 1
Solve for J MUST SHOW WORK
j/-2 + 7 = -12
thx!!
Answer:
j=38
Step-by-step explanation:
j/-2 +7=-12, subtract 7 from both sides of the equation and you get j/-2 = -19, then you multiply j/-2 by -2/1 and multiply -19 by -2/1 to get j= 38
Show that the quadrilateral is a parallelogram.
9514 1404 393
Answer:
opposite sides have the same slope, so it is a parallelogram
Step-by-step explanation:
A parallelogram has opposite sides that are parallel. Here, one pair of opposite sides consists of horizontal lines. Both have zero slope, so are parallel.
The other pair of lines each has a "rise" of 3 units for each "run" of 2 units, so the lines have a slope of 3/2. Both lines have the same slope, so are parallel.
Since opposite sides are parallel, the figure is a parallelogram.
I need help with both of these
Answer:
13x² - 19x + 23-16x +17Step-by-step explanation:
1 . (4x² - 9x + 16) + (7 + 9x² - 10x)
4x² - 9x + 16 + 7 + 9x² - 10x
13x² - 19x + 23
2 . (-2x + 6) - (14x - 11)
-2x + 6 - 14x + 11
-16x +17
35% of the students at charles drew middle school are 6th graders if there are 84 sixth graders what is the total number of students in the school
Answer:
240 students
Step-by-step explanation:
If 84 represents 35% then 100%=(84/35)(100)
240 students
You're going on a 1211-mile trip, and your car gets about 29 miles per gallon. Gas prices along your route average $3.40. Estimate the cost of gasoline for this trip by rounding the distance to 1200 miles, the mileage to 30 miles per gallon, and the cost of gas to $3.00 per gallon. Calculate the answer without using estimate and compare the two results. (Round your answers to the nearest cent.)
Answer:
Using the estimate:
The car has to go for 1,200 miles but it consumes a gallon of gasoline for every 30 miles. The number of gallons it will need is therefore:
= 1,200 / 30
= 40 gallons
Each gallon costs $3.00 so the total cost is:
= 40 * 3
= $120
Without using the estimate:
The car has to go for 1,211 miles but it consumes a gallon of gasoline for every 29 miles. The number of gallons it will need is therefore:
= 1,211 / 29
= 41.76 gallons
Each gallon costs $3.40 so the total cost is:
= 41.76 * 3.40
= $141.98
Using the estimate provides a lower cost of gasoline for the trip.
A survey all beings on plant Kent found that 20 beings preferred Freon juice to all other juices. If 50 beings surveyed altogether, what present of them preferred Freon juice
Answer: 40%
Step-by-step explanation:
Since 20 beings preferred Freon juice to all other juices and there were 50 people that were surveyed, the percentage of those that preferred Freon Juice will be:
= Those that preferred Freon Juice / Total number surveyed. × 10
= 20/50 × 100
= 40%
Solve each system of equations using matrices.
-2x = -6y + 8
2y = x + 1
Answer: 1.) x - 2y = 4 , add 2y to both sides. ---> answer is, X = 2y + 4
2.) 2x - 6y = 8, Add 6y to both sides, then divide both sides by 2. --> answer is, X = 3y + 4
Help pls and thank you :)
Answer:
The one on the bottom right
Step-by-step explanation:
Answer:
The last one.
Step-by-step explanation:
Each y goes up by 4: 4,8,12, depending on what the x is. The y is always the x times 4 for the last table.
(I got u homie :P)
Which does not belong? Explain your reasoning.
a. y = 220(1.75)
b. y =64(1.23)
c. y = 40(0.87)
d. y = 56(1.42)
Think about the differences between growth and decay
Answer:
c
Step-by-step explanation:
Find the area of the shape below
Answer:
225 centimeters^2
Step-by-step explanation:
SO just split the shape
Calcualte
11*14+9*9
154+81=225
-2x+9x+1-93
answer pls
Solve for r.
21 = 42 - 3r
A. r = -8
B. r = -7
C. r = 7
D. r = 8
Answer:7
Step-by-step explanation:
21=42-3r
21-42=3r
-21=3r
r=7
Answer:
-7
Step-by-step explanation:
