Answer:
2.4 hr. = time working together
Step-by-step explanation:
Let x = time working together
x/6 = work done by Martin
x/4 = work done by Victor
Martin's part + Victor's part = 1 jog done
x/6 + x/4 = 1 Multiply thru by 12
2x + 3x = 12
5x = 12
x = 2.4 hr.
The time taken to pour concrete on the walkway using their combined rate is 2 hours 24 minutes.
To solve :
Time taken by Martin = 6 hours
Time taken by Victor = 4 hours
Recall :
Rate = 1 ÷ time
Hence ;
Martin's work rate = 1/6Victor's work rate = 1/4Working together :
Combined rate = 1/6 + 1/4 = 5/12Therefore, the time taken if they work together will be :
1 ÷ combined rate Time taken = 1 ÷ (5/12) Time taken = (1 × 12/5) = 2.4 hours = 2 hours 24 minutesTherefore, The time taken if they work together will be 2.4 hours.
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Solve the inequality.Graph the solution on the number line. ( I need help graphing the answer because I already have the answer which is x > 5 or equal to 5)
Answer:
Place a filled in dot at -3 with a ray heading to the right
Step-by-step explanation:
What is the domain of the relation?
ty
4
2
-4<=x<=4
-4
-4<=X<=6
4
-4
3 of 11
Answer:
-4 ≤ x ≤ 6
Step-by-step explanation:
When we talk of the domain, we are referring to the possible x-values
from the diagram, we can see that we have the x-values at -4 and 6
The dotted line means that -4 and 6 are in the domain
Thus, the two points represent the end and starting point of the domain
Writing this in interval notation, we have the representation as;
-4 ≤ x ≤ 6
What’s less -99 or 1/100
Answer:
-99
Step-by-step explanation:
1/100 is positive, and -99 is negative, so 1/100 is greater
i need help pleaseeee
Answer:
I did this question just the other day. The answer you are looking for is B or the second one.
Step-by-step explanation:
Topic 10 online test copy 1
Use distributive property to simplify 3(2x - 6). SHOW ALL STEPS! Anyone able to help me with this I will gladly like it.
Answer:
6x - 18
Step-by-step explanation:
3 x 6 = 18, so thats how you get the 18 in the answer
3 x 2x = 6x, which is how you get the 6x
and theres a subraction sign so we know to put a - there.
Answer:
6x - 18
Step-by-step explanation:
3(2x - 6) =
("... - 6" means that whatever we do with the 6, we have to remember that it's negative)
3(2x - 6) =
3 * 2x + 3 * (-6) =
6x + (-18) =
(if we add a negative number then it's the same as subtracting that number)
6x + (-18) = 6x - 18
-------------------------------------------------
Hope i didn't make it to complicated to understand, glad to help :D
P.S. Dont be afraid to ask me a question if you didn't uderstand.
PLSSSSS HELP DUE IN 3 min Write the equation of the line in fully simplified slope-intercept form.
Write a numerical expression for the verbal expression
The sum of twelve and sixteen divided by the sum of three and four.
Answer:
The sum of twelve and sixteen divided by the sum of three and four
[tex]\frac{12 + 16}{3 + 4}[/tex]
Hope this helps!!!
Can someone help me what is the slope pls help?
Answer:
-5/3
Step-by-step explanation: rise over run it goes down -5 and goes across 3
Solve the equation 7[X-4] - 2[X-3(5+X)] = 2/3[X-6]
Answer:
Hello! :) have a good day!
Exact Form:
x = −18/31
Decimal Form:
x = −0.58064516
Answer:
18/5
Step-by-step explanation:
above attached the process
and mark me as the brainlist
I need help with this, 70 points, whoever helps I’ll give Brainly
Answer:
Step-by-step explanation:
Given the table below for selected values of f(x), use 6 left rectangles to estimate the value of
the integral from 1 to 10 of f of x dx.
x 1 3 4 6 7 9 10
f(x) 4 8 6 10 10 12 16
Numerical Answers Expected!
Answer:
Step-by-step explanation:
Given is a table of x, f(x) as below
x 1 3 4 6 7 9 10
f(x) 4 8 6 10 10 12 16
Mid pt 6 7 8 10 11 14
width of
interval 2 1 2 1 2 1
dA1 12 7 16 10 22 14
area = area of all rectangles= 81 sq units.
One teacher wants to give each student 2 1 8 _ slices of pizza. If the teacher has 17 slices of pizza, then how many students will she be able to hand out pizza to?
Answer:
8 students
Step-by-step explanation:
17 ÷ 2 1/8 = 8
cuál es el Angulo de 68 grados y como se llama
Answer:
se llama agudo el ángulo de 80 grados
Which of these expressions is equal to 3−8i?
Answer:
the second option
Step-by-step explanation:
(5 + i) - (2 + 9i) = 3 — 8i
How many solutions does this system have?
y=-3x
-9x-4y= 21
one solution
two solution
an infinite number
no solution
I need help please!!!!!
Answer:
one solutions
Step-by-step explanation:
Beacause at the end of the solution the value of x
will be the solution
There is a line whose y-intercept is 7 and whose slope is 3. What is the equation in slope intercept form?
Answer:
y = 3x + 7
Step-by-step explanation:
Slope intercept form: y = mx + b
A boy does 20J of work in 4s. Find his Power.
Answer:
5 watts
Step-by-step explanation:
power (measured in watts) is joules per second, or J/s
J = 20
s = 4
J/s = 5
man I became an expert and still won't let me msg people
do I gotta prestige or sum?? what more do I need 2 do dawg
AFTER YOU ANSWER 1000 OR MORE QUESTIONS
I hope this helps :) God bless
A bag contains colored tiles.
Answer:
0.5
Step-by-step explanation:
total tiles = 12
green tiles = 6
so : 6/12 = 0.5
solve this equation for x. 4x-5=2x+3
Answer:
x = 4
Step-by-step explanation:
4x-5 = 2x+3
subtract 2 x from each side and add 5 to each side
2x = 8
x = 4
what is 2 increased by 5 times a number
Answer
what is 2 increased by 5 times a number = 10
Step-by-step explanation:
Answer:
The number:
1: 7
2: 12
3: 17
4: 22
5: 27
6: 32
7: 37
8: 42
9: 47
10: 52
The increase for each number will be 5.
Step-by-step explanation:
Can I please get some help with this problem?
Answer:
a = 55
Step-by-step explanation:
By exterior angle theorem:
a+10 + 44 = 2a
a= 55
Here's the proof:
Consider the same figure shown
say a+10 = x and 44 = y
Thus the remainng angle is 180 - x-y
and the exterior angle is 180- ( 180 - x- y) = x+y
Thus proved
Mrs. Kim bought
4
4 boxes of stickers at the store to share with her students. Each box contained
64
64 stickers.
Answer:
She has 256 stickers.
Step-by-step explanation:
4 times 64 equals 256
Fees for Overdue Books Fees for Overdue Books Fees for Overdue Books Late Fee ($) Days Overdue Days Overdue Days Overdue Think about the slope and y-intercept for each graph, and what they represent in the applied situations. What are the similarities of these situations? What are the differences of these situations? What causes those differences Write about how you would create linear equations using the graphs above. Also, explain what these graphs represent?
Answer:im lonely
Step-by-step explanation:
A dripping tap wastes 11,250 ml of water in 9 hours. If it drips equal quantity in each hour ,how much water will be wasted in an hour? Express your answer in L.
Answer: In 1 hour , it will waste = 1.25ml
Step-by-step explanation:
Volume of water wasted by the tap in 9 Hours = 11,250 ml
Since it drips in equal quantity,
In 1 hr , it will drip= 1 x 11,250 / 9 = 1,250 ml
But 1000 ml = 1 Liter
1250 ml = 1250ml x 1Liter / 1000ml= 1.25L
(Easy) For the following quadratic function, find the axis of symmetry, the vertex and the y-intercept. y = x^2 + 12x + 32
Answer:
see explanation
Step-by-step explanation:
Given a quadratic in standard form , y = ax² + bx + c ( a ≠ 0 ), then
The x- coordinate of the vertex, which is also the equation of the axis of symmetry is
[tex]x_{vertex}[/tex] = - [tex]\frac{b}{2a}[/tex]
y = x² + 12x + 32 ← is in standard form
with a = 1, b = 12 , then
[tex]x_{vertex}[/tex] = - [tex]\frac{12}{2}[/tex] = - 6
Substitute x = - 6 into y for corresponding y- coordinate
y = (- 6)² + 12(- 6) + 32 = 36 - 72 + 32 = - 4
Thus
equation of axis of symmetry is x = - 6
vertex = (- 6, - 4 )
To find the y- intercept , let x = 0
y = 0² + 12(0) + 32 = 32 ← y- intercept
The axis of symmetry is x = -6, vertex is (-6,-4) and y-intercept is 32.
Quadratic function:Important information:
The given quadratic function is [tex]y=x^2+12x+32[/tex].Substitute [tex]x=0[/tex] to find the y-intercept.
[tex]y=(0)^2+12(0)+32[/tex]
[tex]y=32[/tex]
The vertex form of a quadratic function is:
[tex]y=a(x-h)^2+k[/tex] ...(i)
Where a is constant, (h,k) is vertex and x=h is the axis of symmetry.
Adding and subtracting the square of half of coefficient of x, the given quadratic function can be written as:
[tex]y=x^2+12x+32+6^2-6^2[/tex]
[tex]y=(x^2+12x+6^2)+32-36[/tex]
[tex]y=(x+6)^2-4[/tex] ...(ii)
On comparing (i) and (ii), we get
[tex]a=1,h=-6,k=-4[/tex]
Therefore, the axis of symmetry is x = -6, vertex is (-6,-4) and y-intercept is 32.
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Jackie has $32 in her purse. She earned $80 from babysitting this week.
What percentage of the money she earned from babysitting is in her
purse?
Answer:
40%
Step-by-step explanation:
assuming all the money in the purse is from babysitting then (32/80)*100= 40%.
in other words, 32 is 40% of 80
Answer:
89.6
Step-by-step explanation:
A box contains 6 red pencils and 8 blue-pencils. A pencil is chosen at random and not
replaced. A second pencil is then chosen at random. Calculate the probability that at least one
of the pencils is red
Answer:
There are 14 pencils and 8 are blue
The probability of picking blue in the first pick = 8/14 =4/7.
The probability of picking blue in the second pick = 7/13 (as no replacement was there).
There are 14pencils and 6 are red.
The probability of picking red in the first pick = 6/14 =3/7
The probability of picking red in the second pick = 5/13. (as no replacement was there).
The DeJeu family plan to drive to Marietta, GA to Newark, NJ. The distance is about 880 miles and the majority of their trip will be on a highway, where they will travel at an average speed of 65 miles per hour. They are leaving at 7:30 am, and they plan to stop 3 times for 10 minutes each and once for 1 hour. What is the approximate travel time?
Answer:
[tex]10:02:24\ \text{pm}[/tex]
Step-by-step explanation:
d = Distance to travel = 880 miles
s = Average speed of the car = 65 mph
Time taken to cover the distance is
[tex]t=\dfrac{d}{s}\\\Rightarrow t=\dfrac{880}{65}\\\Rightarrow t=\dfrac{176}{13}\ \text{h}=13.54\ \text{hours}[/tex]
Time the car stopped
[tex]3\times 10+60=90\ \text{minutes}=1.5\ \text{hours}[/tex]
Total time of the journey
[tex]13.54+1.5=15.04\ \text{hours}[/tex]
Converting [tex]0.04\ \text{hours}[/tex] to minutes
[tex]0.04\times 60=2.4[/tex]
So, the total time taken for the journey is [tex]15\ \text{hours and }2\ \text{minutes and }24\text{seconds}[/tex]
Time when they reach their destination
[tex]7:30+15:2.4\approx 10:02:24\ \text{pm}[/tex]