Answer:
10k^2 - 13k - 3
Step-by-step explanation:
( 5k + 1 ) ( 2k - 3 )
= 5k ( 2k - 3 ) + 1 ( 2k - 3 )
= 10k^2 - 15k + 2k - 3
= 10k^2 - 13k - 3
I need help with these questions.
Please show workings.
Question 1:
A trader made a profit of 20% on a radio which he sold for N144 .Calculate the cost price of the radio .
Question 2:
A motor dealer sold a car at a loss of 20% by selling it at N10,000 . Find the cost price.
Note :
Cost price formula :
[tex]C.P = S.P-P \\ or S.P+L[/tex]
Selling Price Formula :
[tex]S.P = C.P + P \\ or C.P - Loss[/tex]
Profit Percentage ( P% ) formula :
[tex] P \% = P/C.P × 100 \\ l \% = l/C.P × 100[/tex]
Answer:
Question 1
Given
SP = 144P = 20%CP = xUse formula and solve for x:
SP = CP + P144 = x + (20% of x)144 = x + 0.2x144 = 1.2xx = 144/1.2x = 120Cost price is N 120
Question 2
Given
SP = 1000P = -20% (negative because of loss)CP = xUse formula and solve for x:
SP = CP + P10000 = x - (20% of x)10000 = x - 0.2x10000 = 0.8xx = 10000/0.8x = 12500Cost is N 12500
If a car weighs 1,750 kg, would you expect its fuel efficiency to be closer to 22 mpg or 28 mpg? Explain your reasoning
Answer:
closer to 22 mpg
Fuel-efficiency is the ability of a car to extract energy from fuel.The more the energy the car can extract from fuel, the greater fuel-efficiency the car has.Heavier vehicles require more energy to move because inertia and rolling resistance is high, leading to high fuel consumption.Reducing weight improves vehicle's efficiency.
Step-by-step explanation:
please answer my qetoton on my page its the top one
evaluate this pls quiick i have 18 min left online exams help
-0.0004 x 0.02
Given:
The expression is:
[tex]0.0004\times 0.02[/tex]
To find:
The value of the given expression.
Solution:
We have,
[tex]0.0004\times 0.02[/tex]
It can be written as:
[tex]=\dfrac{4}{10000}\times \dfrac{2}{100}[/tex]
[tex]=\dfrac{8}{1000000}[/tex]
[tex]=0.000008[/tex]
Therefore, the value of the given expression is 0.000008.
Divide 9 by 3 then subtract two double the result
Answer:
2
Step-by-step explanation:
9 ÷ 3 - 2 × 2
3 - 2 × 2
1 × 2
2
An engine is operating at 25% of its full power. Which number line shows a point that
represents 25%?
Answer:
The first line
Step-by-step explanation:
x + 9 <4x plz awser
Answer:
x>3
Step-by-step explanation:
Help me with this please
Answer:
1) <2 ; 60
2) <3 ; 60
3) <4 and <3. <4 = 120 and <3 = 60
4) <1, <3, and <4 = 125. <2 = 55
Step-by-step explanation:
1)
Corresponding angles are equal
2)
Alternate interior angles are equal
3)
<4 and <3 are same-side interior angles. This makes them supplementary angles
<4 = 120
<3 = 60
4)
<1 = <4 = <3. All of these angles equal 125.
<2 + <1 = 180
<2 + 125 = 180
<2 = 55
NO LINKS PLEASE- OR I SWEAR-
What is the median (Q2) of this data set?
(TYPE the NUMBER)
Answer:
70 or 75 70 is on there so that my best answer
Step-by-step explanation:
SIMPLEE!!! WRITE AN EXPRESSION!
which expression is equivalent to -6(3 + 4x)
Answer:
−18 − 24x
Step-by-step explanation:
Give me Brainllest
Answer:
1/4 (1-3x)
Step-by-step explanation:
someone said it
Please help it's for trig
Answer:
-4
Step-by-step explanation:
Given the expression
h(x) = -x^2 +4x
h(-2) = (-2)^2 + 4(-2)
h(-2) = 4 + (-8)
h(-2) = 4 - 8
h(2) = -4
Hence the value of the function when x = -2 is -4
Mr. Pete just got a great deal at Lowe’s on tiles for his new patio. He wants to
tile his patio in the shape that is rectangular. His patio measures 108 inches by
144 inches. Find the fewest square tiles he can use without cutting any of them.
Answer:
The fewest square tiles he can use without cutting any of them = 12 square tiles
Step-by-step explanation:
The given dimensions of Mr. Pete's rectangular patio = 108 inches by 144 inches
The area of the patio = 108 in. × 144 in. = 15,552 in.²
We note that when square tiles are used the must fit both the length and the with of the rectangular patio
Therefore, we have;
The dimensions of the square tiles that the fewest number of tiles is the highest common factor, HCF, of 108 inches and 144
The HCF of 108 and 144 are found from by the prime factors as follows;
108 = 2² × 3³ = 2² × 3² × 3
144 = 2⁴ × 3² = 2² × 3² × 4
From which we have;
The HCF of 108 and 144 = 2² × 3² = 36
Therefore, the size of the sides of the square tiles that will give the fewest number of tiles is 36 inches
The number of the 36 inches square tiles that fit into the length of the rectangular patio = 144 inches/(36 inches/tile) = 4 tiles
The number of the 36 inches square tiles that fit into the breadth of the rectangular patio = 108 inches/(36 inches/tile) = 3 tiles
The total number of tiles he will use = (4 × 3) tiles = 12 tiles = The fewest square tiles he can use without cutting any of them.
Dad is getting food ready for my birthday party! Including me, there will be 18 people at the party. Dad is baking cookies for us! He can bake 24 cookies per batch.
How many batches should I tell Dad to make so we can each have 4 cookies?
The area of a square piece of glass is 36 square centimeters. How long is each side?
Answer:
6 centimetres
Step-by-step explanation:
Square root 36 = 6
Answer:
6
Step-by-step explanation:
A = x^2
x = √A
x = √36
√36 = 6
Factorise 3c^2-c
Please help me quick
Answer:
c(3c - 1)
Step-by-step explanation:
3c² - c
Common factor = c
Factored:
c(3c - 1)
FIND THE THE
MISSING ANGLE:
45°
60°
Answer:
A triangle must have a total of 180 degrees.
Step-by-step explanation:
180-45=135
135-60=75
The missing angle x=75
CAN SOMEONE PLEASE HELP ME OUT??
Answer:
D. -1≤x<4
Step-by-step explanation:
4-x<0 and x+1≥0
x<4 and x≥-1
so D. -1≤x<4
Write a polynomial that represents the area of the shaded region.
Answer:
10x-22
Step-by-step explanation:
((x+2)(x-1))-((x-4)(x-5))
(x^2-x-2)-(x^2-9x+20)
x^2 + x - 2
+ (-x^2+9x-20)
_______________
10x-22
PLEASE HELP I WILL MARK BRAINLIEST!!!
Answer:
14.5
Step-by-step explanation:
Mr. Brown purchased 5.75 pounds of chicken that cost $2.40 per pound.
What is the total the Mr. Brown paid?
Answer:
8.15 is the answer
Step-by-step explanation:
Find g(x), where g(x) is the translation 2 units right of f(x)=x2. Write your answer in the form a(x–h)2+k, where a, h, and k are integers.
Answer:
g(x) =( x² - 2 )
Step-by-step explanation:
We have the orignal function, and that is x².
to shift 2 units to the right, we add two the value of the x² in parebtheses, and it shifts 2 units to the right in the graph.
condense this logarithm to a single logarithm
6log 5u
Answer:
log_5(u^6)
Step-by-step explanation:
According to log rules, log_a(b^n) = nlog_a(b), reversing this we get that log_5(u^6) is what you are looking for.
Expand LaTeX: (4a - 3b^3)^2.
HELP EASY 5TH GRADE MATH
Answer:
11,590 and 46,360
Step-by-step explanation:
11,590
+ 46,360
_________
57,850
Answer:
Blank 1: 11,590
Blank 2: 46,360
I saw some of the other answer and a finally noticed what their are asking, the step by blanks must be filled so if you multiply 5 by 2318 gives you 11,590 and then you multiply 2 by 2,318 which equals 4,636. You may be wondering why that is because it does not line up, well because 2 in 25 is not the first to the right you add a 0 to the end of the answer which makes it 46,360 and add 11,590 giving you 57,950.
Hope I helped you out! Feel to ask and questions! <3
how many solutions does the system of equations graphed below have?
A) 2
B) 1
C) 0
D) infinite
 The above diagram shows 4 island countries in the Marina Ocean. Each inch on the map represents a distance of 200 miles. The capital of each island country is marked with a star.
A travel group leader takes a group of tourists from the capital of Green Island to the capital of Orange Island and back again. How long is the tour in miles?
A.
1,200 miles
B.
800 miles
C.
900 miles
D.
400 miles
Answer:
B.
Step-by-step explanation:
Each is 2,000 miles and I have calculated for the first try four inches and it had gotten me to 8,000. (since 2,000 miles x 4 inches) = 8,000.
-If this is wrong, I am sorry.
On a certain day the temperature in Seattle was 6°F and the temperature in Houston was
12°F. How many degrees lower was the temperature in Seattle?
1) 17°
2)6°
3)9°
4)18°
Answer:
the answer to the problem is 2)6
Answer: 6°F
Step-by-step explanation:
12°F - 6°F = 6°F
Quick question: is this correct?
Answer:
aha
you know what I mean
mean I guess your correct
Answer:
yes
Step-by-step explanation:
what is the equation of the quadratic function that has x intercepts of -2 and 9?
Answer:
f(x) = (x - 9)(x + 2) = x^2 - 7x - 18
Step-by-step explanation:
If the x-intercepts are -2 and 9, then the factors of this quadratic are (x + 2) and (x - 9). Multiplying these two factors together, we get:
f(x) = (x - 9)(x + 2) = x^2 - 9x + 2x -18, or
f(x) = (x - 9)(x + 2) = x^2 - 7x - 18
PLEASE HELP,,, TIMED!!
Consider f (x) = StartFraction negative 14 x Superscript 4 Baseline + 2 x + 18 Over x Superscript 4 Baseline minus 3 x squared EndFraction Which statement represents the correct interpretation of Limit of f (x) as x approaches plus-or-minus infinity
Answer:
I know that is not a!
Step-by-step explanation:
I just submitted it and I got it wrong unfortunately it does not tell me the correct answer but at least it brings your options down to only 3! I am really sorry I do hope this helps a little!
Answer:
It is D
Step-by-step explanation:
Got it correct!