Answer:
A
Step-by-step explanation:
Each student spend 0.625 hours to wash all the cars.
What is unity method?
The unitary method is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value.
How much time spent by each student to wash cars?All the cars are washed by 1 student in 10 hours.
So, the time taken by 4 students to wash all the cars will be 10/4=2.5 hours.
This includes that 4 students wash all the cars in 2.5 hours.
So, the time invested by each student to wash cars is 2.5/4=0.625.
Therefore, each student spend 0.625 hours.
Disclaimer:
It takes one student 10 hours to wash all the cars at a car wash. If 4 students wash all the cars, how many hours will each person spend washing cars? (assume that all students wash cars at the same rate.)
a. 2.5 hrs
b.0.625 hrs
c.5 hrs
d. 0.4 hrs
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Which expression is equivalent to 6 (3 + 4) ?
Answer: 42
Step-by-step explanation:
6(3+4)
6*7
42
can someonee help me please
Answer:4
Step-by-step explanation:
x+8=2x-1
so x-9=0
and x=9
so x+6=9+6=15
and x+8=9+8=17
You can do Pythagoras' theorem:
17^2-15^2=64
so [tex]\sqrt{64}[/tex]=4
For the equations given below, which statement is true? A. The equations do not have the same solution because the second equation can never be obtained when multiplying the first equation by any value. B. The equations have the same solution because the second equation can be obtained by multiplying both sides of the first equation by −3. C. The equations have the same solution because the second equation can be obtained by multiplying both sides of the first equation by 3. D. The equations have the same solution because the second equation can be obtained by multiplying both sides of the first equation by −4.
Quadrilateral WXYZ is translated 5 units left and 2 units down to create Quadrilateral W’X’Y’Z’.
2
Which rule best describes this transformation?
(x, y) → (-4x, -4y)
(x, y) → (-5x, -2y)
(x, y) → (x + 5, y + 2)
(x, y) → (x - 5, y - 2)
Answer:
It would be a
Step-by-step explanation:
A ball is thrown into the air with an upward velocity of 40 ft/s. Its height h in feet after t seconds is given by the function \large h=-16t^2+40t. What is the ball's maximum height?
Answer:
[tex]h=25[/tex]
Step-by-step explanation:
From the question we are told that:
Velocity [tex]v=40fts[/tex]
The height h function
[tex]\large h=-16t^2+40t[/tex]
Generally time t is mathematically given by
[tex]h'=-32t+40[/tex]
[tex]-32t+40=0[/tex]
[tex]t=\frac{40}{32}[/tex]
[tex]t=1.25[/tex]
Therefore the ball's maximum height is given as
[tex]\large h=-16(1.25)^2+40(1.25)[/tex]
[tex]\large h=-16(1.25)^2+40(1.25)[/tex]
[tex]h=25[/tex]
if each box represents 1 miles, what is the shortest distance from the school to the skate park.
The shortest distance between two points is a straight line.
Use the distance formula for points.
In the diagram, we are given two points:
(4,2) and (-3,0).
Let d = distance between the two points.
d = sqrt{(-3 -4)^2 + (0-2)^2}
d = sqrt{(-7)^2 + (-2)^2}
d = sqrt{49 + 4}
d = sqrt{53}
d = 2.2360679775
d = 2.2 miles
someone please explain this
Answer:
Step-by-step explanation:
110=4t+90(being vertically opposite angles)
110-90=4t
20/4=t
5=t
Answer:
Hello! answer: t = 5 degrees
Step-by-step explanation:
these are vertical angles meaning they will have the same measure! 4 × 5 = 20 and 20 + 90 = 110 therefore t = 5 HOPE THAT HELPS!
4 divided by 5 long division
I need help on this please
1 with a remainder of 1
write an expression that is equivalent to: 1/3 ÷ 5/6
Answer: 0.4 or 4 i think
help help 100 points
Answer:
all of them except the first and the 4th
Step-by-step explanation:
Answer:
Step-by-step explanation:
All but 4
¿Cuál propiedad de los números complejos se muestra a continuación?
continuación?
(2 + 3i )+(5 - 4i) = (5 - 4i)+(2 + 3i). A) asociativa. B) distributiva. C) inverso aditivo. D) conmutativa. Cual es la respuesta correcta ? please help me quickly
Answer:
D) Comutativa
Step-by-step explanation:
a+b=b+a (álgebra)
espero que te sirva mi ayuda
Can someone help me???
Answer:
p to the power of 12
Step-by-step explanation:
hope this helps!
The answer is
(p3)4=p?
p3×4=p12
Can anyone help?????
I need answers now please!
Answer:
option C
Step-by-step explanation:
During the basketball season, Jason scored 43 points. He scored 5 fewer points than three times the number Kevin did. How many points did Kevin score? Write an equation and solve.
use the geometric mean (leg) theorem. what is the value of a?
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the concept of Geometric Mean (leg) theorem.
So according to the rule, we know that, here altitude = h and left side is 6 and right side is 14 , so we get as,
==> altitude/left = right/altitude
==> h/6 = 14/h
==> h^2 = 14*6
==> h^2 = 84
2.) so now we apply the Pythagoras theorem in triangle ∆DCB
so we get as,
==> (14)^2 + h^2 = a^2
==> 196 + 84 = a^2
==> 280 = a^2
==> a = √280
==> after simplified => a = √70*4
==> a = 2√70 units
hence the correct answer is a => 2√70 units.
Calculate the surface area of an open cylinder measuring 35cm in diameter and 60cm high.
Answer:
6598.2 in^2
Step-by-step explanation:
Given data
Diameter= 35in
Radius= d/2= 35/2= 17.5in
Height = 60cm
The expression for the curve surface area of a cylinder is
CSA=2πrh
substitute
CSA= 2*3.142*17.5*60
CSA= 6598.2 in^2
Hence the CSA is 6598.2 in^2
Solve the equation 3 (x+ 4.5) = 36 one step at a time. Use the diagram to help you
(EXPLAIN. step BY step)
In a group of 32 pupils, 3 play the flute only. 13 play the piano only. 10 play neither instrument. A student is selected at random. What is the probability the student plays both instruments?
Answer:
18.75%
Step-by-step explanation:
Given that
There is a group of 32 pupils
3 play the flute only
13 play the piano only
And, 10 play neither instrument
We need to find out the probability the student plays both instruments
So
= (32 - 13 - 10 - 3) ÷ 32
= 6 ÷ 32
= 0.1875
= 18.75%
Answer:
6/32 or 3/16
Step-by-step explanation:
13 add 10 add 3 = 26
32-26=6
the total amount of children is 32 so the number is 6/32
you can then simplify it to 3/16
hope this helps :)
List the first 5 multiples of 4. * Your answer
Answer:
4,8,12,16,20
Step-by-step explanation:
Can pls someone help me plsss I need help :(
Answer: [tex]7,5.66,39^{\circ}[/tex]
Step-by-step explanation:
Given
[tex]IJ=9\\\angle I=51^{\circ}[/tex]
from figure, we can write
[tex]\Rightarrow \sin 51^{\circ}=\dfrac{HJ}{9}\\\\\Rightarrow HJ=9\sin 51^{\circ}=6.99\approx 7[/tex]
[tex]\Rightarrow \cos 51^{\circ}=\dfrac{HI}{9}\\\Rightarrow HI=9\cos 51^{\circ}\\\Rightarrow HI=5.66[/tex]
In right angle trianle, the sum of the remaining two angles is [tex]90^{\circ}[/tex]
[tex]\therefore 51^{\circ}+\angle J=90^{\circ}\\\Rightarrow \angle J=90^{\circ}-51^{\circ}\\\Rightarrow \angle J=39^{\circ}[/tex]
solve: 3x^2+16x+5=0
I did it but apparently its wrong so, please help it would literally probably help me finish high school.
Answer:
(3x+1)(x+5)
Step-by-step explanation:
Sorry for my handwriting lol hope this makes sense
Show your work.
please help!
Answer:
5/3
Step-by-step explanation:
25^1/2/27^1/3
5/27^1/3
5/3
solve for x
20
30
40
56
Answer:
30
Step-by-step explanation:
brainliest?
Answer:
40
Step-by-step explanation:
(6+1) to the power of 2. For some reason I forgot how to do this.
Answer:
49
Step-by-step explanation:
see the image below:)
Hey guys! Can i get some help on this one? Thank u!
Answer:
x=-1
Step-by-step explanation:
-2x-3=x
add 2x to both sides
-3=3x
divide both sides by 3
-1=x
Plzzz help me plzzzzz math helppppp
No links or imma report u 20 points plzzzzz
Answer:
wheres the question? it just says what you said-
Answer:
Picture please
Step-by-step explanation:
I'll help you with math, is it 6th grade math?
I need help please !!!!!!
Claire can make an origami swan in 2 1/2 minutes what fraction shows the number of swans she can make per minute
Answer:
2/5
Step-by-step explanation:
Number of swans Claire can make in one minute = 1 ÷ 21/2
convert 2 1/2 to an improper fraction
to convert to improper fraction, take the following steps :
1. Multiply the whole number by the denominator
2. Add the numerator to the answer gotten in the previous step
3. divide the number gotten in the previous step by the denominator
2 1/2 = 5/2
1 ÷ 5/2
1 x 2/5 = 2/5
please please help me i’m failing math!!!
Answer:
go to school, do your work, you are only cheating yourself, not the school, or end up homeless
Step-by-step explanation: