Divide total made by total hours:
20.40 / 3 = $6.80 per hour
Answer:
See below.
Step-by-step explanation:
Divide the amount of money by the time.
20.4/3=6.8
So, alex earned $6.80 per hour.
-hope it helps
Today only, a table is being sold for 134.40 . This is 32% of its regular price. What was the price yesterday?
Answer:
$177.41
Step-by-step explanation:
when it says 32% OF , of always means multiply in word problems so we multiple 132% (1.32) times 134.40
$177.41
Answer:
420
Step-by-step explanation:
32% of its original price
32%=134.40
100%=?
cross multiply
100/100 x 134.40 × 100/32
1×134.40×3.125
=420
An appliance store sells an oven for 25% off the original price. The sale price is $251.85, not including tax. What is the price of the oven, not including tax, before the discount is applied?
¿ A que distancia se encuentran dos masas de 60 kg y 80 kg, si la fuerza de
atracción entre ellas es de 3x10-31N.
Teniendo en cuenta la Ley Universal de la Gravitación, la distancia a la que se encuentran dos masas de 60 kg y 80 kg, si la fuerza de atracción entre ellas es de 3×10⁻³¹ N, es 1.033 ×10¹² m.
Ley Universal de la GravitaciónLa Ley Universal de la Gravitación establece que los cuerpos, por el simple hecho de tener masa, experimentan una fuerza de atracción hacia otros cuerpos con masa, llamada fuerza gravitacional.
Esta ley dice que la fuerza gravitacional entre dos cuerpos es directamente proporcional al producto de sus masas e inversamente proporcional al cuadrado de la distancia que los separa.
Matemáticamente se expresa de la siguiente manera:
[tex]F=G\frac{Mm}{d^{2} }[/tex]
donde:
G es la constante gravitatoria universal, con un valor de 6,67×10⁻¹¹[tex]\frac{Nm^{2} }{kg^{2} }[/tex].M y m son las masas de los cuerpos que interactúan.d es la distancia que los separa.Distancia entre dos masasEn este caso, sabes:
F= 3×10⁻³¹ NM= 60 kgm= 80 kgReemplazando en la Ley Universal de la Gravitación:
[tex]3x10^{-31}N =6,67x10^{-11}\frac{Nm^{2} }{kg^{2} } \frac{60 kg x80 kg}{d^{2} }[/tex]
Resolviendo:
[tex]\frac{3x10^{-31}N}{6,67x10^{-11}\frac{Nm^{2} }{kg^{2} }} = \frac{60 kg x80 kg}{d^{2} }[/tex]
[tex]4,4977x10^{-21} \frac{kg^{2} }{m^{2} } = \frac{4800 kg^{2} }{d^{2} }[/tex]
[tex]d^{2} x4,4977x10^{-21} \frac{kg^{2} }{m^{2} } =4800 kg^{2}[/tex]
[tex]d^{2} = \frac{4800 kg^{2} }{4,4977x10^{-21} \frac{kg^{2} }{m^{2} } }[/tex]
[tex]d = \sqrt{\frac{4800 kg^{2} }{4,4977x10^{-21} \frac{kg^{2} }{m^{2} } }}[/tex]
[tex]d = \sqrt{1,0672x10^{24} m^{2} }[/tex]
d= 1.033 ×10¹² m
Finalmente, la distancia a la que se encuentran dos masas de 60 kg y 80 kg, si la fuerza de atracción entre ellas es de 3×10⁻³¹ N, es 1.033 ×10¹² m.
Aprende más acerca de la Ley Universal de la Gravitación:
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What is the value of x? The figure is not drawn to scale. Show work
Answer:
x = 21.
Step-by-step explanation:
AS there are parallel lines:
4/12 = 7/x
4x = 84
x = 84/4 = 21.
Anthony is six years older than Juntao. In three years' time, the ratio of Juntao's age to Anthony's age will be 2 : 5. How old is Juntao now?
ABSOLUTE VALUE FUNCTION
PLS HELP WILL GIVE BRAINLY FOR CORRECT ANSWER ONLYY
B) [tex]\sf y=\left|x-3\right|[/tex]
The original graph has x-intercept : 3 || y-intercept : 3Calculate the y-intercept and x-intercept for every function.Here in option B,
y-intercept:
y = |x-3|
y = |0-3|
y = 3
x-intercept:
0 = |x-3|
x - 3 = 0
x = 3
Thus option B is correct.
Can someone please help me?
Question 4:
2x + 3y = 17 -- equation 1
5x + 6y = 32 -- equation 2
(equation 1) * 2
4x + 6y = 34 -- equation 3
(equation 2) - (equation 3)
x = -2 -- equation 4
plug (equation 4)'s value of x into (equation 1)
2(-2) + 3y = 17
3y - 4 = 17
3y = 21
y = 7
Thus the answer is x = -2 and y = 7
Question 5:
The vertex form of a quadrilateral looks like this:
[tex]y = a(x-h)^2 + k[/tex]
a : coefficient of [tex]x^2\\[/tex](h,k): coordinate of the vertex.The x-coordinate of the vertex is equal to '-b/2a'. Where b is the
coefficient of x, so:
[tex]h = -\frac{b}{2a} =-\frac{-8}{2*1} =4[/tex]
There is also another formula to find the y-value of the vertex
coordinate, but the easier way to find it is to plug it into the original
equation:
[tex]k=(4)^2-8(4) + 12= 16 -32 + 12 = -16 + 12 = -4[/tex]
Since we know now that h = 4 and k = -4 and that a = 1, lets plug it into
the original equation.
[tex]y = 1*(x-4)^2 - 4 =(x^2-4)-4[/tex]
Thus the answer is [tex]y = (x-4)^2 -4[/tex]
Hope that helps!
the diameter of a half dollar is 3 centimeters what is the circumference of a half dollar to the nearest millimeter
Answer:
9.4 cm
Step-by-step explanation:
pi*diameter=circumference
3.14159*3=9.42478
round to nearest millimeter
9.4 cm
A box of 15 cookies costs $9dollar sign, 9. What is the cost for 1 cookie?
Answer:
$1.66 or $1.70 if you round up
Step-by-step explanation:
HELP AGAIN I NEED IT DUE IN 10 MIN
Answer:
C: 28 inches
Step-by-step explanation:
Perimeter is when you add the length of each sides together.
Answer:
c
Step-by-step explanation: Because to get the perimeter you need to add all the sides of the figure for example 9+9+5+5=28 :]
ixl math question im very lazy and i dont understand
Answer:
1/21
Step-by-step explanation:
We start with 7 cards. The probability of picking a 4 is 1/7. Since the first card is not put back, there are 6 cards left. Of these 6 cards, there are two which have divisors of 63: 3 and 7. So the probability of picking a divisor of 63 is 2/6, which reduces to 1/3. Multiplying these probabilities gives 1/21.
Please help, again. I really need this grade!
What is the area of this figure?
Answer:
56 im pretty sure not my level but if i did it right it should be but if it is wrong im sorry
Step-by-step explanation:
somebody help me with this!
i haven't done this in a while, so i forgot how to do it
Step-by-step explanation:
x+48=180
x=180-48
x=132
have a good day
Answer:
x = 132°
Step-by-step explanation:
The exterior angle is equal to the sum of two opposite interior angles.
d = a + b, where d is the exterior angle, a and b are the two opposite interior angles.
d = 60 + 72
d = 132°
A design for a garden is composed of a triangle and 2 rectangles. Some side lengths of the garden design are shown. 7.5 ft 12.5 ft 7.5 ft 12.5 ft What is the area of the garden in square feet?
Answer:
215.625 square feet.
Step-by-step explanation:
The best way to approach this is by finding the area of each shape and then adding them together.
The area of a rectangle is Length · Width. Both rectangles have a length of 12.5 feet and a width of 7.5 feet. 12.5 · 7.5 = 93.75. And since both rectangles have the same dimensions, we can just multiply 93.75 by two to get 187.5 square feet for the rectangles.
The area of a triangle is Base · Height / 2. Since the sides of the triangle are the same as the sides of rectangles, the dimensions of the triangle are 7.5 feet and 7.5 feet.
7.5 · 7.5 / 2 = 28.125 square feet.
187.5 + 28.125 = 215.625 square feet.
Hope this helps! :)
Flight Times (h)
.
.
Alrjet Express
2. The double dot plot shows the
times, in hours, for flights of two
different airlines flying out of the
same airport. Compare the shapes,
centers, and spreads of the two
populations. Which airline's flights
had shorter flight times? (Examples 3 and 4)
:
+
4 5 6 7 8 9
+ Cross Country Airlines
10
1 2 3
The dot plot that was illustrated simply shows that the airline's flights had shorter flight times is Airjet Express.
What is a dot plot?It should be noted that a dot plot simply means a plot that is used to display the data values.
In this case, the dot plot that was illustrated simply shows that the airline's flights had shorter flight times is Airjet Express. This was depicted in the data visualization.
Learn more about dot plots on:
https://brainly.com/question/15853311
4. Find the volume of the pyramid
Answer:
58 1/3 in³
Step-by-step explanation:
Volume of a square pyramid:
V = (1/3)a^2h (don't need the lateral lenght)
why need a question when its on the picture?
Answer:
Always true.
Step-by-step explanation:
All rectangles are made up of four right angles, which are always congruent.
Which inequality is shown in the graph?
Answer:
Step-by-step explanation:
A circle has (-1, -1) and (-25,-11) as endpoints of a diameter.
Find the center and radius of the circle.
Write the standard equation of the circle.
well, since we know the diameter points, half-way in between is the center
[tex]~~~~~~~~~~~~\textit{middle point of 2 points } \\\\ (\stackrel{x_1}{-1}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{-25}~,~\stackrel{y_2}{-11}) \qquad \left(\cfrac{ x_2 + x_1}{2}~~~ ,~~~ \cfrac{ y_2 + y_1}{2} \right) \\\\\\ \left(\cfrac{ -25 -1}{2}~~~ ,~~~ \cfrac{ -11 -1}{2} \right)\implies \left(\cfrac{-26}{2}~~,~~\cfrac{-12}{2} \right)\implies (-13~~,~~-6)[/tex]
and its radius will be half the length of the diameter
[tex]~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{-1}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{-25}~,~\stackrel{y_2}{-11})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[-25 - (-1)]^2 + [-11 - (-1)]^2}\implies d=\sqrt{(-25+1)^2+(-11+1)^2} \\\\\\ d=\sqrt{(-24)^2+(-10)^2}\implies d=\sqrt{676}\implies d=26~\hfill \stackrel{half~that}{r=13}[/tex]
[tex]\rule{34em}{0.25pt}\\\\ \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{-13}{ h},\stackrel{-6}{ k})\qquad \qquad radius=\stackrel{13}{ r} \\\\[-0.35em] ~\dotfill\\\\\ [x-(-13)]^2~~ + ~~[y-(-6)]^2~~ = ~~13^2\implies (x+13)^2~~ + ~~(y+6)^2~~ = ~~169[/tex]
Write each expression without the absolute value symbol |3x+12|
Answer:
3x+12 if x>-4
0 if x=-4
-3x-12 if x<-4
What is the vertex of the function below?
Answer:
lol thts 26
Step-by-step explanation:
divide y⁴-2y³-7y²+8y+12 by (y-3) using long division method
please give answer
Help pleaseee asaappp
What is the equation of the line below?
Answer:
y = -x+5
Step-by-step explanation:
m = -1, so y = -x+5
In the figure below, BC=7 and AB= 16. Find AC.
The expressions BC and AB are illustrations of straight lines
The length AC is 25 units
How to determine the length of AC?The given parameters are:
BC =7
AB = 16
Assume that AB and BC are straight lines.
Then , we have:
AC =AB + BC
Substitute known values
AC = 16 + 7
Evaluate the sum
AC = 25
Hence, the length AC is 25 units
Read more about lengths at:
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Luke bought a video game system that costs $99.95 and games that cost $19.99 each. Bella bought a game system that costs $125.79 and games that cost $15.99 each. Luke spent no more than what Bella spent.
Which inequality represents this situation?
99.95 + 19.99x < 125.79 + 15.99x
99.95 + 19.99x < 125.79 + 15.99x
99.95 + 19.99x > 125.79 + 15.99x
99.95 + 19.99x > 125.79 + 15.99x
Answer:
a
Step-by-step explanation:
because < means bigger and 125 is bigger than 99
Answer:
99.95 + 19.99x ≤ 125.79 + 15.99y
Step-by-step explanation:
Given:
Luke bought a video game system that costs $99.95 and games that cost $19.99 each.
Bella bought a game system that costs $125.79 and games that cost $15.99 each.
Luke spent no more than what Bella spent.
To Find:
Which inequality represents this situation?
Solve:
Let Luke bought = x.
Let Bella bought = y.
How much Luke paid = $99.95 + $19.99 × x = $99.95 + $19.99x
How much Bella paid = $125.79 + $15.99 × y = $125.79 + $15.99y
Luke paid is equal or lesser than how much Bella paid, then
99.95 + 19.99x ≤ 125.79 + 15.99y
~lenvy~
Find the length of PF
Answer: 6
Step-by-step explanation:
what is 1/100 of 2.14
Answer:
.0214
Step-by-step explanation:
2.14 * .01 = .0214
to check:
.0214 * 100 = 2.14
A store is open for business while it is being renovated. The noise from the renovation is increasingly driving
away customers. The daily revenue, r (d), the store has made d days since renovation began is modeled by the
function r (d) = 10,000 (0. 939)d. What is the factor of decay in this function?
A
1. 9539
B
10,000
с
0. 0461
D
0. 9539
The factor of decay in the function that represents the daily revenue of the store is 0.939.
What is the factor that represents decay?
The factor that represents decay is the factor that reduces the growth rate of revenue for this store. In the given function, the factor that represents decay would have a value that is less than one.
To learn more about exponential functions, please check: https://brainly.com/question/26331578
Please help me, I have no Idea how to solve this.
Answer:
19 ducks are NOT WINNERS
There is a 76% CHANCE that you will not choose a winning duck, so it is VERY LIKELY that you will choose a duck that is not a winner.
Step-by-step explanation:
Answer: 1.) 19 rubber ducks are not winners
2.) There is a 76% chance of not choosing a winning duck
1.) Step-by-step explanation: 25 times 0.24 equals 6, 25-6=19
2.) 0.24 is equal to 24% and 100-24= 76 so 76% chance of not choosing a rubber duck