Answer:
It takes them 1.875 hours.
Step-by-step explanation:
Here, the job is cleaning the house.
Mom does 1 job in 3 hours.
In 1 hour, mom does 1/3 of the job.
Dad does 1 job in 5 hours.
In 1 hour, dad does 1/5 of the job.
Mom and dad working together do the job in x hours.
In 1 hour, mom and dad together do 1/x of the job.
1/3 + 1/5 = 1/x
5/15 + 3/15 = 1/x
8/15 = 1/x
8x = 15
x = 15/8 = 1.875
Answer: It takes them 1.875 hours.
your welcome
If you roll a fair number cube 30 times, what is the experimental probability of rolling a 2
Answer:
1/6 chance or 16.667% chance
Step-by-step explanation:
a fair number cube has six sides so if you roll that 30 times that's 180 sides and the probability of rolling a 2 out of a single dice is 1/6 and since 180 * 1/6 is equal to 30 that is 30 out of 180 which is 1/6
The difference of three times a number and a second number is two. The sum of the two numbers is fourteen. What are the two numbers?
Answer:
x=4
y=10
Step-by-step explanation:
3x-y=2
x+y=14 are the 2 equations
you do the elimination process to get 4x=16
which x=4
then you plu 4 into either equation to get y=10
the table shows the results of rolling a number cube labeled 1 through 6 30 times
based on the results, if the cube roles 200 times, how many times is it expected to land on 1
Answer:
40 times
Step-by-step explanation:
To figure this out, divide 6 by 30, then multiply by 200
(6/30)200 = 40
This also works: (200/30)6 = 40
We divide 6 by 30 because we landed on the 1 side 6 times out of 30. We then multiply 6/30 by 200 because it is out of 200 this time, so we will multiply 6 by 200 then divide by 30. 200(6) = 1200. 1200/30 = 40.
how do you find the fist step to solving the system of equations x+y=8 and 3x-2y=-6
Answer:
The first stpe in solving this system of equations is finding either X or Y in terms of the other variable. Ex: x = 8 - y or y = 8 - x
Step-by-step explanation:
When faced with a system of equations problem, you need to find one variable at a time. To do this, you need to eliminate one of the variables from one of the equations. I used x + y = 8 because that was simplier to find one of the variables from. From there, you can substitute that in for the variabel in the secone equation.
3x - 2y = -6
3x - 2(8 - x) = -6
3x - 16 + 2x = -6
5x - 16 = -6
5x = 10
x = 2
Than you can use that and plug it back into one of the original equations to find the other variable.
x + y = 8
2 + y = 8
y = 6
Mona had $20.00. She bought one loaf of bread for $2.25, a gallon of milk for $4.39, and a carton of eggs for $1.19. How much change should she get back?
Answer:
She should get $12.17 in change.
Step-by-step explanation:
20- 2.25 = 17.75
17.75 - 4.39 = 13.46
13.46 - 1.19 = 12.17
HGD
-ghost
Triangle
ABC with vertices A(-6, -8), B(0, 4), and C (-6, 10) is dilated so that A’ is
now (-15, -20). What was the
dilation, and where are B’ and C’?
Answer:
scale factor = 2.5 and b` is now (0,10) and c` is (-15, 25)
Step-by-step explanation:
You first want to divide -15 and -6, the x values of a and a`. this will give you the scale factor. then multiply every other number by the scale factor to get the points for b` and c`.
(not sure if this is right but this is how i learned)
A dart hits the circular dartboard shown below at a random point. Find the probability that the dart lands in the shaded circular region. The radius of the dartboard is 13in, and the radius of the shaded region is 5in. Use the value 3.14 for π. Round your answer to the nearest hundredth.
Answer:
0.15
Step-by-step explanation:
Area = [tex]\pi[/tex][tex]r^{2}[/tex]
Area of the shaded region = [tex]\pi 5^{2}[/tex]
Area = 78.5 [tex]in^{2}[/tex]
Area of the whole dart board = [tex]\pi r^{2}[/tex]
Area = [tex]\pi 13^{2}[/tex]
Area = 530.66[tex]in^{2}[/tex]
Probability = [tex]\frac{78.5}{530.66}[/tex]
= 0.1479 ≈ 0.15
which equation is equialent to 60% of 25? choose all that apply
A water pump fills a dolphin tank at the aquarium at the rate of 100 gallons per minute. The tank holds 75,000 gallons of water when its full. Which calculation should be used to determined how many hours the water pump will take to fill the tank?
A. (75,000 · 100)·60
B. (75,000 · 100) ÷ 60
C. (75,000 ÷ 100) · 60
D.(75,000 ÷ 100) ÷ 60
Four students were given dot to create. Sketch the dot plots in questions 1-4. Then use the clues in A-D to determine each student's data set.
Answer:
Step-by-step explanation:
Jasmine unfolded a cardboard box. The figure of the unfolded box is shown below:
A long rectangle divided along the length into 4 equal squares is shown. Along the upper edge length of the second square is shown another square, and along the lower edge length of the fourth square is shown another square. The first square from the left has two adjacent sides labeled as 2 inches each.
Which expression can be used to calculate the area of cardboard, in square inches, that was used to make the box?
2 x 6 x 6
6 x 1 x 1
6 x 2 x 2
1 x 6 x 6
Answer:6x2x2
Step-by-step explanation:
18 divided by 3600 28pts
Step-by-step explanation:
The answer would be 200!
Answer:
200
Step-by-step explanation:
Find the area of the circle. Round your answer to two decimal places, if necessary.
Step-by-step explanation:
A = pi × r²
A = pi × 13²
A = 530.93 km²
please help! unrelated comment/answer = report
At noon, a team bus left City College for their opponent's school. Soon thereafter, City's first-line player Brett Starr arrived at the gym. A loyal day-student parent volunteered to overtake the bus and deliver Brett. The two left at 12:15 pm. The parent drove at 54 mph, while ahead of them the yellow bus poked along at 48 mph. Did the car catch the bus before it reached the game, which is 110 miles from City college? If so, where and when?
Answer:
No, the car didn't catch the bus, as their time and distance traveled doesn't intersect when portrayed on a graph.
Step-by-step explanation:
It would take the car approximately 2.14 hours to catch up to the bus. Since the car left at 12:15 pm, it should have caught up to the bus at 2:29 pm.
What is the average speed?Average speed is calculated by dividing a quantity by the time required to obtain that quantity. Meters per second is the SI unit of speed. The formula S = d/t, where S is the average speed, d is the total distance, and t is the total time, is used to determine average speed.
Yes, the car was able to catch up to the bus before it reached the game. With the car travelling at 54 mph and the bus travelling at 48 mph, the car is travelling 6 mph faster than the bus. In order to calculate how long it would take for the car to catch the bus, we use the formula for average speed:
Average speed = (speed of car + speed of bus) / 2
Average speed = (54 mph + 48 mph) / 2
Average speed = 51 mph
Now, we can use the formula for distance travelled over time to calculate how long it would take the car to travel the 110 miles to the game:
Distance = Rate x Time
110 miles = 51 mph x Time
Time = 110 miles / 51 mph
Time = 2.14 hours
Therefore, it would take the car approximately 2.14 hours to catch up to the bus. Since the car left at 12:15 pm, it should have caught up to the bus at 2:29 pm.
Learn more about the average speed here:
brainly.com/question/9834403.
#SPJ2
Which meal is your favorite: breakfast, lunch, or dinner?
choice question
Step-by-step explanation:
lunch :DDDDDDDDDDDDDDDD
Answer:
My favorite meal is Breakfast
Step-by-step explanation:
please help me with this i dont really knwo how to calculate it
thank you :D
Answer:
p = (4 × 2401) × 121 = ( 9604 × 121) = 1162084
q = (9 × 125) × 14641 = (1125 × 14641) = 16471125
LCM of 1162084 = 2324168 , 3486252 , 4648336 , 5810420 , 6972504
LCM of 16471125 = 32942250 , 49413375 , 65884500
Step-by-step explanation:
please help me on this because I'm stressed right now
Answer:
D. 63
Step-by-step explanation:
500 * 1/8 = 62.5
62.5 lightsbulbs do not exist soo we round up to 63
Please give step by step I’ll give u Brainly or whatever it is
Chantelle deposits $7,500 into the bank. she does not withdraw or deposit money 6 years. She earns 6% interest during that time.
a. How much interest will she have earned at the end of 6 years?
B. What will the balance be when she is finally able to withdraw her money?
Step-by-step explanation:
p=7500*100=750000
t=6yrs
r=6%
I=p*t*r/100
=750000*6*6/100
=270000
=270000/100
=$2700
beinggreat78 answer fast please :')
Answer:
17662.5 sq. feet
Step-by-step explanation:
We know that the formula for Area of a Circle is [tex]A = \pi (r)^2[/tex].
r = radius; d = diameter, which is r*2
And so, in the question, it gives you that the diameter is 150, first we divide it by 2 to get the radius.
150/2 = 75
The question said to keep [tex]\pi[/tex] =3.14, so then we plug in the equation-
[tex]A = 3.14 * 75^2[/tex]
Then we use PEMDAS [Parenthesis; Exponents; Multiply & Divide; Add & Subtract] which would get us-
[tex]A = 3.14 * 5625[/tex] (first doing the Exponent)
And we continue-
[tex]A = 17662.5[/tex] (then multiple)
So our answer is-
17662.5 sq. feet
I hope this helps!
Please give brainliest!
Have a great day
-8 1/3 + 3 2/5
lol i need a refresh when you multiply the fraction to get it to be added with the other one do you multiply the whole number too?
Answer:
-81/3+32/5
-81×5+32×3/15
-243+96/15
-147/15
-49/5 Ans
To answer your question ("do you multiply the whole number too?"): Yes, you have to multiply the whole number as well. You can't just separate 1/3 from -8 and multiply it with 2/5, because the whole number is part of the mixed #. Whenever you multiply, add, divide, subtract, or do anything to two mixed numbers, you must include the whole term.
- - - - - - - - - -
Now your question is addition. Like I said, when you add them together, the whole number and the fractions count as one term.
So basically, -8 1/3 + 3 2/5...
- - - - - - - - - -
1) Find the LCM (least common multiple) of the denominators
The LCM of 3 and 5 is 15. To get from 3 to 15, you have to multiply 3 by 5. Now multiply the numbers of the fraction part only by 5.
1/3 --> 5/15 (as you can see, 1x5 = 5, 3x5 = 15)
Now for 2/5: To get from 5 to 15, multiply 5 by 3. Do the same thing to the numbers in the fraction
2/5 --> 6/15 (2x3 = 6, 5x3 = 15)
***TO CLARIFY, DO NOT MULTIPLY THE WHOLE TERM BY THE NUMBER***
Right: 2x3 = 6, 5x3 = 15, 6/15
Wrong: 2/5 x 5 = 2
- - - - - - - - - -
2) So now that we found a common denominator, change the two terms to -8 5/15 + 3 6/15 (because we had to find the LCM to make life a lot easier)
- - - - - - - - - -
3) We just add them together. Even though they are a term together, you can split them apart and add them together separately thanks to the commutative property of addition*.
Time to split it apart to make life a whole lot easier. -8 5/15 can be split apart into the two terms -8 and 5/15. For 3 6/15, it can be split into 3 and 5/15.
Two options from here on:
Set up a single equation: Put all the terms into one equation. -8 + 3 + 5/15 + 6/15. Solve by adding all the terms together in whichever order you prefer (again, thanks to the commutative property of addition)
It would result in the answer -4 4/15
Or...
Set up two separate equations: Set up an equation for whole numbers, and another one for fractions.
Equation 1: -8 + 3 = -5
Equation 2: 5/15 + 6/15 = 11/15
(6 + 5 = 11)
And we add the sums together. -5 + 11/15 = -4 4/15
And that's it!
- - - - - - - - - -
*Commutative Property of Addition: The sum of the numbers will NOT change even if you change the order of the addends
Was an hour late, but I hope this still helped you! If there are any questions, just comment below this
Which describes the cross section of the rectangular prism that passes through vertices A, B, C, and D? A rectangular prism with measurements 3 centimeters, 10 centimeters, 6 centimeters. a rectangle with two 10-cm sides and two 6-cm sides a rectangle with two 10-cm sides and two sides that are longer than 6 cm a nonrectangular parallelogram with two 10-cm sides and two 6-cm sides a nonrectangular parallelogram with two 10-cm sides and two sides that are longer than 6 cm
Identify the vertex and axis of symmetry.
f(x) = 3(x+7)²-5
Answer:
haiii i can only solve for the vertex...
Step-by-step explanation:
so to find the vertex you have to make it to
y - h = a(x - k)^2
i think
(you could also just make it y = a(x - k)^2 + h but i like the second one better)
soo
y + 5 = 3(x + 7)^2
the vertex is
(-7, -5)
and ummm i think the axis for the axis of symmetry .ss
x = 2a/b but im not sure
A point is chosen at random in the square shown below. Find the probability that the point is in the shaded circular region. Each side of the square is 12cm, and the radius of the circle is 6cm. Use the value 3.14 for π. Round your answer to the nearest hundredth.
Answer:
75.14 or 56.52
Step-by-step explanation:
Either you multiply 12x6+3.14=75.14 or you add 12+6x3.14=56.52
In an Independent Event, the first event has an effect on the second event.
Answer Choices:
True
False
Answer:
It false
Step-by-step explanation:
Two events are independent if the result of the second event is not affected by the result of the first event. If A and B are independent events, the probability of both events occurring is the product of the probabilities of the individual events.
Figure B has a total area of 75 in squared.
Answer: and what do I answer
Step-by-step explanation:
Answer:
[tex]
\begin{gathered}A=\underbrace{\begin{pmatrix}1&2\\4&3\end{pmatrix}}_{M_1}\underbrace{\begin{pmatrix}6&1&5\\7&3&4\end{pmatrix}}_{M_2}\end{gathered}[/tex]
Just Trying out this latex
A student made two patterns to show multiplication of a declmal by powers of ten. The equations shown for both patterns are incorrect. Pattern A 3.675 • 10 = 3.6750 3.675 - 100 = 3.67500 3.675. 1.000 = 3.675000 Pattern B 3.675.0.1 = 3.0675 3.675 -0.01 = 3.00675 3.675 -0.001 = 3.000675 explain why the equations in each of the patterns are false. include in your explanation the values that should appear on the right side of each equation in both patterns to make the equations true.
Answer:
Step-by-step explanation:
The correct solving of the decimal shows that 3.675 × 10 = 36.750, 3.675 × 100 = 367.5 and 3.675 × 1,000 = 3675.
How to solve the decimals?
From the information given, it should be noted the students calculations are incorrect. Therefore, 3.675 ×10 = 3.6750, 3.675 × 100 = 3.67500 and 3.675 × 1,000 = 3.675000 are incorrect.
In this case, when multiply by raise to power 10, it's important to shift the decimal based on the number being raised to power.
Therefore, 3.675 × 10 = 36.750, 3.675 × 100 = 367.5 and 3.675 × 1,000 = 3675.
Approximate square root 18 to the nearest hundredth. Be sure to show all of your work.
Answer:
The square root of 18 with one digit decimal accuracy is 4.2.
Step-by-step explanation:
Answer:
4.24 (nearest hundredth)
Step-by-step explanation:
Step 1
Square numbers: 1, 4, 9, 16, 25, 36, ...
Find the perfect squares either side of 18:
16 and 25As [tex]\sf \sqrt{16}=4[/tex] and [tex]\sf \sqrt{25}=5[/tex] then [tex]\sf 4 < \sqrt{18} < 5[/tex]
Step 2
Divide 18 by one of the two square roots in step 1 (4 or 5):
⇒ 18 ÷ 4 = 4.5
Step 3
Find the average of the root (4) and the result (4.5):
[tex]\sf \implies \dfrac{4+4.5}{2}=4.25[/tex]
Repeat steps 2 and 3:
Divide 18 by the solution of step 3. Then find the average of this and the solution of step 3:
⇒ 18 ÷ 4.25 = 72/17
[tex]\sf \implies \dfrac{4.25+\frac{72}{17}}{2}=\dfrac{577}{136}=4.242647059[/tex]
Repeat:
⇒ 18 ÷ 577/136 = 2448/577
[tex]\sf \implies \dfrac{\frac{577}{136}+\frac{2448}{577}}{2}=4.242640687[/tex]
As the approximate square root needs to be to the nearest hundredth, we do not need to keep repeating the steps.
Therefore, √18 ≈ 4.24 (nearest hundredth)
helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp
Answer:
the Answer is 4
Step-by-step explanation:
Draw a open circle on 4 and a straight line 5-10
Donut King sell donuts for $6 per dozen. Ellen buys donuts for her office. Which statement is NOT true
+15 POINTS!!!!!
Answer:
C:Ellen spends exactly $18 for 3 3/4 dozen.
Step-by-step explanation:
1 dzn=$6
3.75 dzn is not exactly $18. It is $22.50
Answer:C
Step-by-step explanation:3 dozens already equals $18