Answer:
Shirley bought a fax machine and sells to Devi at a profit of 25% on the cost price.
Shirley buy price:: x
Devi buy price:: 1.25x
Devi sells the fax machine to Amirah at a loss of 250 on the price which she buys it from Shirley.
Amirah buy price = 1.25x -250
if Amirah pays $360 for the fax machine,how much did Shirley pay for it?
Equation:
1.25x - 250 = 360
1.25x = 360 + 250
x = 610 / 1.25
x = 488
Ans: x = $488 (Price Shirley paid)
if a=(-1, -3) and b=(11, -8) what is the length of ab?
Answer: D. The length is 13 units.
Step-by-step explanation:
(-1, -3 ) Find the difference between the x values and y values.
(11, -8)
-3-(-8) = 5
-1-11 = -12 now find the absolute values.
The absolute value of 5 is 5 . The absolute value of -12 is 12.
Now use the Pythagorean Theorem formula a^2 + b^2 =c^2 where c square is the length between AB.
5^2 + 13^2 = C^2
25 + 144 = c^2
169=c^2
c= 13
Answer:
D. 13 Units
Step-by-step explanation:
I just took the test
Veronica’s velocity was measured as 4.3 m/s. She displaced 20 meters in 4.7 seconds. Which piece of information is missing for the correct calculation of velocity?
Answer:
Direction
Step-by-step explanation:
poop
Pls help, I will mark brainlessly and give 5 stars
Answer:
1.C 2.D
Step-by-step explanation:
Answer:
1 is C and 2 is D
Step-by-step explanation:
Mr.Tola has a piece of wood that is 8 1/4 feet in length. He wants to cut it into pieces that are each 3/4 foot in length. How many 3/4 foot pieces of wood can Mr.Tola make?
Answer:
11
Step-by-step explanation:
1/4 is equal to 0.25. 3/4 is equal to 0.75.
8.25 divided by 0.75.
11
pls hep for the brainliest
Answer:189.25 cm 189.3 cm if rounded to one decimal point
Step-by-step explanation:
You need to find the area of the rectangle, then the area of 1/2 the circle.
Rectangle Area =
L x w =
10 x 15 = 150cm
Circle Area =
A=πr^2 =
Diameter = 10, so radius = 5
π(5)^2 = 25π = (25)(3.14) = 78.5
Area of 1/2 Circle = 78.5/2 = 39.25
150 + 39.25 = 189.25 cm
What is the missing justification?
Answer:
The missing justification is the transitive property.
Step-by-step explanation:
The missing justification is the transitive property. The transitive property states that: If a = b and b = c, then a = c.
The transitive property of equality states that if A is equal to B, and B is equal to C. Then B is equal to C. The missing justification is the transitive property of equality.
What is the transitive property of equality?The transitive property of equality states that if A is equal to B, and B is equal to C. Then B is equal to C. For Example,
A = B and B = C, then,
A = C
Given ∠A≅∠B and ∠C≅∠B therefore, using the transitive property of equality we can write ∠A≅∠C.
Hence, the missing justification is the transitive property of equality.
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Lucy makes green paint by mixing yellow and blue paint in the ratio 5:2. Blue paint costs
£30 for 5 litres and yellow paint costs £28 for 7 litres.
Lucy sells her green paint for £4.50 per litre. Will she make a profit? Show your working
to justify your decision.
Answer:
No, she won’t make a profit
Step-by-step explanation:
Here, we are interested in determining if Lucy made a profit or a loss.
The cost of blue paint is 30 pounds for 5 liters. This means that a liter of blue paint is 30/5 = 6 pounds per liter
The cost of yellow paint is 28 pounds per 7 liters, the cost per liter is 28/7 = 4 pounds per liter
Now, in her mixing, she mixes 5 parts of yellow paint and 2 parts of blue paint.
This means that she mixed them the ratio as follows per liter;
For yellow, we have; 5/(5+2) = 5/7
For blue we have 2/(5+2) = 2/7
Now since a liter of yellow paint cost 4 pounds
5/7 of a liter will cost 5/7 * 4 = 20/7 pounds
For the blue paint, a liter cost 6 pounds, 2/7 of a liter will cost 2/7 * 6 = 12/7
The total cost in pounds in this;
20/7 + 12/7 = 32/7 = £4.57 pounds to 2 decimal place
Now she sells her green paint product at £4.5 per liter. Since this is less than the cost price of production which is £4.57, she is running at a loss
PLEASE HELP ITS FOR A TEST I WILL GIVE U BRAINLIEST
Danica and Darrelle have developed a lucrative business selling handmade silver bracelets. Darrelle makes the more complex bracelets and Danica makes the simpler ones. It takes Darrelle 4 hours to make 3 bracelets and Danica can make 5 bracelets every 2 hours.
a. Convert this scenario into linear equation(s); show both the standard form and the slope-intercept form of your equation(s).
b. Could any part of this scenario be graphed using any of the special functions discussed in the course text? Explain your answer.
c. Each bracelet Darrelle sells makes $10.50 in profit. Each bracelet Danica sells makes $3.50 in profit. If Darrelle and Danica work the same amount of time, explain each of the steps you will use and then calculate how many hours will it take for the whole business to make at least $500 profit?
Answer:
At the average rate of making profit, it will take slightly more than 30 hours for the business to reach a profit goal of $500. (30.075)
Step-by-step explanation:
a) It is not clear what linear equation is desired. We are given enough information to write an equation relating the number of bracelets produced by each worker to the time it takes.
Let n represent the number of bracelets Danica produces. Let r represent the number of bracelets Darrelle produces. Let h represent time in hours.
.. r/3 = h/4 ... Darrelle produces 3 bracelets in 4 hours
.. 4r - 3h = 0 ... equation in standard form
.. r = (3/4)h ... equation in slope-intercept form (the intercept is 0)
.. n/5 = h/2 ... Danica produces 5 bracelets in 2 hours
.. 2n - 5h = 0 ... equation in standard form
.. n = (5/2)h ... equation in slope-intercept form
b) We have no idea what special functions were discussed in the course. Of course these equations can be graphed. (2-dimensional equations are easily graphed.)
c) A profit function can be written in terms of the number of bracelets produced. Then it can be solved to find when (h=?) profit is equal to $500.
.. Let p represent the total profit from production of bracelets.
.. p = 10.50*r + 3.50*n ... profit in terms of bracelets produced
.. p = 10.50*((3/4)h) + 3.50*((5/2)h) ... profit in terms of hours, where both work the same hours
.. p = 16.625 h
.. 500 = 16.625 h ... we want to find hours until $500 profit
.. 500/16.625 = h ≈ 30.0752
At the average rate of making profit, it will take slightly more than 30 hours for the business to reach a profit goal of $500.
_____
If you work out the timing of when bracelets are finished, assuming they are made at a constant rate, you find that there will be 23 of Darrelle's bracelets and 76 of Danica's bracelets finished in 30 hours and 40 minutes. These will yield a profit of $507.50. After another 8 minutes, Danica will have finished bracelet 77 to add another $3.50 to the profit total.
[tex](\frac{15x^{2}y }{8x} )(\frac{4y}{9xy} )[/tex]
Please answer correctly !!!! Will mark brianliest !!!!!!!!
Answer:
(5x+2)(3x-2)
Step-by-step explanation:
15x^2-4x-4
= 15x^2+6x-10x-4
= 3x(5x+2) - 2(5x+2)
= (5x+2)(3x-2)
Answer:
Step-by-step explanation:
I don't say u must have to mark my ans aas brainliest but if it has realy helped u plz don't forget to thank me my friend....
The measures of two supplementary angles are 4x° and 2x°. Write and solve an equation to find the measure of each angle.
Equation: ________________________
Answer: _____________________________
Equation: [tex] 4x\degree + 2x\degree = 180°[/tex]
Answer:
120°, 60°
Step-by-step explanation:
Since, sum of any two Supplementary angles is always 180°.
[tex] \therefore 4x\degree + 2x\degree = 180°\\
\therefore 6x\degree = 180°\\
\therefore 6x = 180\\\\
\therefore x = \frac{180}{6}\\\\
\therefore x = 30\\
\implies \\
4x° = (4\times 30)° = 120°\\
\&\\
2x° = (2\times 30)° = 60°\\
[/tex]
What part of the circumstance is an arc whose measure is 30
Answer:
1/12. What is the degree measure of an arc 4 ft. long in a circle of radius 10 ft.? 72°.
Step-by-step explanation:
what solution is 7x+7=6x+4+x+3
Answer:
infinite solutions (all real numbers)
Step-by-step explanation:
7x+7=6x+4+x+3
7x+7=7x+7
infinite solutions (all real numbers)
Answer:
Equation is alway true
All real numbers are solutions.
Step-by-step explanation:
Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 7*x+7-(6*x+4+x+3)=0 Step by step solution :
Step 1 : Equations which are always true : 1.1 Solve 0 = 0This equation is a tautology
Hope this helps.
The length of rod PR is adjusted to 16 feet. If width PQ remains the same, what is the approximate new height QR of the scaffold? Round your answer to the nearest hundredth.
Question:
Look at the picture of a scaffold used to support construction workers. The height of the scaffold can be changed by adjusting two slanting rods, one of which, labeled PR, is shown: Part A: What is the approximate length of rod PR? Round your answer to the nearest hundredth. Explain how you found your answer stating the theorem you used. Show all your work. (5 points)
B) The length of rod PR is adjusted to 16 feet. If width PQ remains the same, what is the approximate new height QR of the scaffold? Round your answer to the nearest hundredth.
Answer:
A) 16.64 Feets
B) 7.65 feets
Step-by-step explanation:
Given the following :
The question above can be solved by applying Pythagoras rule :
A^2 = B^2 + C^2
PR² = PQ² + QR²
PR² = 14² + 9²
PR² = 196 + 81
PR = √277
PR = 16.64feet
Now if PR is adjusted to 16 Feets, the New height of the scaffold will be:
QR² = PR² - PQ²
QR² = 16² - 14²
QR² = 256 - 196
QR² = 60
Take the Square root of both sides
QR = √60
QR = 7.7459666 Feets
what is a cofunction
Answer:
A cofunction is whenever A and B are completmentary angles.
Step-by-step explanation:
Answer:
Step-by-step explanation:
(−5 + 3i) ⋅ (1 − 2i)
Answer:
[tex] - 1[/tex]
Step-by-step explanation:
[tex](-5 + 3i) \times (1 - 2i) \\ ( - 5 + 6) \times (1 - 2) \\ ( 1) \times ( - 1) \\ = - 1[/tex]
PC=PD then (PA)PC)=(PB)(___)
Answer:
PD is the answer
Step-by-step explanation:
(PA) (PC) = (PB) (PD)
On a scale drawing, the height of a tree is 2.25 inches. If the scale drawing is 1 in. : 75ft, how tall is the tree?
Answer:
168.75ft
Step-by-step explanation:
We can just multiply by the scale
2.25*75=168.75
The actual height of the tree is 168.75 ft.
What is Height?The height is defined as the measurement of the distance of an object from the base to the top.
Here, Given
Height of tree (in drawing) = 2.25 inches
Scale is given ; 1 inch = 75 ft.
so, 2.25 inches = 2.25 X 75 ft.
≈ 168.75 ft.
Thus, the actual height of the tree is 168.75 ft.
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Which of the following are not polynomials?
Answer:
A B and D but don’t quote me on it
Step-by-step explanation:
somebody help me I’m struggling
Answer:
A. $ (5 + 2x), B. = $ 305
Step-by-step explanation:
x miles
A. cost for x miles = 5 + 2x ($)
B. cost for 150 miles = 5 + 2*150 =305 ($)
Answer:
A. let the mile driven = x
5 + 2x
B. × = 150 mile
taxi service = $5 + $2(150)
= $305
*in an equation u dont have to write the symbol . for example, $, ml, km, etc.
Here are four equations connecting x and y.
kis a constant
Match each equation to one of the statements A B C or D.
Equation 1 Equation 2 Equation 3 Equation 4
y=kx
y=
Ay is directly proportional to x
By is directly proportional to x
Cy is inversely proportional to x
Dy is inversely proportional to x
View One Minute Version
Answer:
The answer is explained below
Step-by-step explanation:
y = kx
A) y is directly proportional to x
When two terms are directly proportional to each other, it means that as one term increases, the other term also increases. Also as one term decreases, the other term also decreases.
If y is directly proportional to x, and k is the constant it can be represented by the equation:
y = kx
y = k/x
C) y is inversely proportional to x
When two terms are inversely proportional to each other, it means that as one term increases, the other term also decreases. Also as one term decreases, the other term increases.
If y is inversely proportional to x, and k is the constant it can be represented by the equation:
y = k/x
which relation is a function ?
How many litres of water (round to the nearest hundredth) can be poured into a tin can that has a diameter of 18 cm and a height of 0.3 m?
Answer:
Step-by-step explanation:
Diameter = 18cm
18 / 2 = Radius
Radius = 9cm
Formula: A=2πrh+2πr^2
2 x pi x 9 x 0.3 + 2 x pi x 9^2 = 525.90261
Nearest hundredth = 525.90
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg.
The ball accelerates at 2,000 m/s2
What is the net force, to the nearest newton, that accelerates the
ball?
Answer:
100 N
Step-by-step explanation:
f= 0.05*2000=100 N
Answer:100
Step-by-step explanation:
El impuesto general a las ventas ( IGV ) en el Perú es 18%.Este porcentaje incrementa el precio de cualquier artículo en venta . Si en una factura figura el precio de una cocina en 590 soles , ¿ Cual era el precio de la cocina antes de que fuera afectado por el IGV
Answer:
o preço da cozinha era 106,20 reais.
Step-by-step explanation:
porque 590-16% e iqual a 106,20 reais
foi o retirar o IGV
In RST, the measure of
Answer:
5.2 feet.
Step-by-step explanation:
The useful equation to use for this problem is sine. Given the angle of measure 64 degrees, we have O (opposite) and H (hypotenuse).
From SOH CAH TOA, we see that we have O and H, so thus we should use sine.
Sine of any angle= opposite/hypotenuse.
Sine of 64= x/5.8
Sine of 64 (times 5.8)=x
x= 5.2 feet.
Additionally, you could use a right triangle calculator to solve for side x.
Answer:
Step-by-step explanation:
sin 64=x/5.8
x=sin64* 5.8
x=0.92*5.8
x=5.3
Use the diagram to find the value of x to the nearest tenth of a foot.
a. 74.6 ft.
b. 5.3 ft.
c. 15.5 ft.
d. 73.3 ft.
Answer:
a
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan15° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{20}{x}[/tex] ( multiply both sides by x )
x × tan15° = 20 ( divide both sides by tan15° )
x = [tex]\frac{20}{tan15}[/tex] ≈ 74.6 ft ( to the nearest tenth of a foot )
The formula for the volume of a cone is V=1/3bh
Solve V=1/3bh
for b, the base of the cone.
Answer:
b = 3Vh
Step-by-step explanation:
When they ask to solve for b, you are essentially rearranging the equation so that b is alone on one side.
V = 1/3bh
(V)(3) = (1/3bh)(3)
3V = bh
(3V)/h = (bh)/h
3Vh = b
b = 3Vh
A certain solution contains 4.3 grams of salt per liter.
How much salt is there in 11 liters of the solution?
Round your answer, if necessary, to the nearest tenth.
Answer:
47.3 grams
Step-by-step explanation:
Given: A solution contains 4.3 grams of salt per liter.
To find: Amount of salt in 11 liters of the solution
Solution:
Amount of salt in 1 liter of the solution = 4.3 grams
So, amount of salt in 11 liters of the solution = 11 × Amount of salt in 1 liter of the solution = 11 × 4.3 = 47.3 grams
Hence, 11 liters of the solution contains 47.3 grams of salt.
Answer: 47.3
Step-by-step explanation: Khan Academy
Solve the equation 2x-1=4x+5
Answer:
-3
Step-by-step explanation:
2x-1=4x+5
-1=2x+5
-6=2x
x=-3
Answer:
x = -3
Step-by-step explanation:
Solve for x:
2 x - 1 = 4 x + 5
Subtract 4 x from both sides:
(2 x - 4 x) - 1 = (4 x - 4 x) + 5
2 x - 4 x = -2 x:
-2 x - 1 = (4 x - 4 x) + 5
4 x - 4 x = 0:
-2 x - 1 = 5
Add 1 to both sides:
(1 - 1) - 2 x = 1 + 5
1 - 1 = 0:
-2 x = 5 + 1
5 + 1 = 6:
-2 x = 6
Divide both sides of -2 x = 6 by -2:
(-2 x)/(-2) = 6/(-2)
(-2)/(-2) = 1:
x = 6/(-2)
The gcd of 6 and -2 is 2, so 6/(-2) = (2×3)/(2 (-1)) = 2/2×3/(-1) = 3/(-1):
x = 3/(-1)
Multiply numerator and denominator of 3/(-1) by -1:
Answer: x = -3