9514 1404 393
Answer:
28 hours
Step-by-step explanation:
Let x represent Jack's time. Then Jill's is x-7. Together their rate of carrying water in hills per hour is ...
1/x + 1/(x -7) = 1/12
Multiplying by 12x(x -7) gives ...
12(x -7) +12x = x(x -7)
x^2 -31x +84 = 0 . . . . . subtract the left side and simplify
(x -3)(x -28) = 0 . . . . . . . . . . factor
x = 3 or x = 28 . . . . . . . . . . x-values that make the factors zero
We know the times must be longer than 12 hours, so the value x=3 is extraneous for this problem.
It takes Jack 28 hours to carry the cooler of water up the hill working alone.
Jenny recorded the weight of 5 dogs. Each dog weighed a different amount. She recorded the results
Which conclusion can be made about the interquartile range of Jenny's box plot?
a box plot.
A)
All the dogs weighed 15 pounds or less.
B)All the dogs weighed between 5 and 15 pounds.
C)The middle 50% of the dogs weighed between 5 and 15 pounds.
D)
The interquartile range was higher than it should be because of the dog
that weighed 20 pounds.
Answer:
C
Step-by-step explanation:
the middle 50% wold be the numerical values in the actual box part of the box plot.
What is (are) the solution(s) to the equation 23x−3=−13x−6?
1. Miriam is starting a lawn mowing business. She bought a mower for $450 and will spend
about $1.20 per hour on gasoline. How many hours will it take for the average cost per hour
for Miriam to do business to be less than $50. If x represents the number of hours she
mows, which inequality shows the average cost per hour for Miriam to do business and what
is the solution? (A.REI.2, A.CED.1)
a. 450 + 1.20x < 50; she can never have an average less than $50
b. 450 + 1.20x < 50; 14 hours
c. 450 + 1.20x < 50; 10 hours
d. 450 – 1.20x < 50; 9 hours
Answer:
she can never have an average less than $50 b. ... If demand of gasoline is inelastic, more of the burden of tax can be ...
Step-by-step explanation:
0540-0058= ???
In military time
Answer:
0442 (4:42 normal time)
btw plz give brainliest
ASAP
Which equation best represents the table below?
If u can help please do
Answer:
the first one is 240
the second one is 280
the third one is 200
The answers that would be discarded would be 220, 360 and 500
Step-by-step explanation:
Hey There!
So for this problem all we have to do is plug in the hours worked and drones sold into the expression 10h+40d
For the first one we just plug in 8 for hours (because he worked 8 hours) and 4 for drones ( because he sold 4 drones )
so we would have 10(8) + 40(4)
10x8=80
40x4=160
160+80=240 So 240 would go with the first one
For the second one we plug in 4 for hours ( because he worked 4 hours) and 6 for drones ( because he sold 6 drones)
so we would have 10(4)+40(6)
10x4=40
40x6=240
240+40=280
So 280 would go with the second one
For the third one we plug in 12 for hours ( because he worked 12 hours) and 2 for drones ( because he sold 2 drones)
so we would have
12(10)+2(40)
12x10=120
2x40=80
120+80=200
so 200 would go with the third one
hope this helps :)
Benjamin owns a small business selling used books. He knows that in the last week 13
customers paid cash, 33 customers used a debit card, and 97 customers used a credit
card.
with a
Based on these results, express the probability that the next customer will pay
debit card as a percent to the nearest whole number.
Answer:
The answer is 23%
Step-by-step explanation:
Tammy made $208 for 13 hours of work.
At the same rate, how much would she make for 9 hours of work?
Answer:
$144Step-by-step explanation:
1) Divide $208 by 13 hours to find out how much money she would make for 1 hour of work.
208 ÷ 13 = 16
1 hour = $16
2) Multiply the amount of money she makes for 1 hour by 9.
16 × 9 = 144
She makes $144 for 9 hours of work.
I hope this helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!
Answer:
$144 for 9 hours of work.
Step-by-step explanation:
15,19,23,__,31 find the number sequence
Answer:
27
Step-by-step explanation:
yes.
are you trying to find the missing number bc if so then its 27
15,19,23,27,31
The length of a guy wire supporting a cell tower is 120 meters. The guy wire is
anchored to the ground at a distance of 80 meters from the base of the tower. To
the nearest hundredth of a meter, how tall is the tower?
120 m
cell tower
80 m
Answer: 140
Step-by-step explanation:
n calculate
find the value of given expression ?
[tex] \sqrt{35 + 25 + 21} [/tex]
Step-by-step explanation:
The answer will be 9 I hope this help you
need help on number 3. plzzzz!
Answer:
Step-by-step explanation:
x y = -5 y (x, y)
-1 -5 (-1, -5)
0 -5 (0, -5)
1 -5 (1, -5)
Slope between two points [tex](x_1,y_1)[/tex] and [tex](x_2,y_2)[/tex] is given by,
Slope = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
Slope between points (-1, -5) and (0, -5) will be,
Slope = [tex]\frac{-5-(-5)}{-1-0}[/tex]
= 0
Slope of the line passing through the given points will be 0.
+-√-49=+-
please help
Answer: 0 if I am not mistaken
the sum of two rational numbers is 2/5. of one of the rational number is -3/7 then find the other rational number
Answer:
-29/35
Step-by-step explanation:
Which expression is equivalent to −36y−13?
−12(3y−1)+1
−12(3y+1)+1
−12(3y+1)−1
−12(3y−1)−1
Answer:
[tex]-12(3y+1)-1[/tex]
Step-by-step explanation:
Can someone please help me on this question ASAP!! thank you. ' what are the coordinates of A & B? '
Answer:
First photo:
A: (2, 6)B: (8, 4)Second photo:
A: (0, 4)B: (5, 0)Third photo:
A: (8.5, 4)B: (2.5, 1.5)Fourth photo:
A: (4, 2)B: (-2, 3)Fifth photo:
A: (3, -5)B: (-4, -1)I hope this helps!
I need help agen plz my teachers are still asking me to stay
Answer:
y = 7x^2 + 42x + 64
Step-by-step explanation:
... i know standard form, you just distribute the exponent to the parenthesis amounts and put it in order, hope it helps
Answer:
y = 7 x ^2 + 42 x + 64
Step-by-step explanation:
I really need help with thing I am in math class help this is due today
Answer:
C
Step-by-step explanation:
The triangle is doubled
Lauren has $90 in a savings account. The interest rate is 5%, compounded annually. To
the nearest cent, how much will she have in 2 years?
Answer:
sorry
Step-by-step explanation:
Answer: the answer is 99.23
Step-by-step explanation: not needed
For the function f(x)=5/4x−2, find the value of f (6). Express your answer as a fraction.
Answer:
f(6) = [tex]\frac{5}{22}[/tex]
Step-by-step explanation:
To evaluate f(6) substitute x = 6 into f(x), that is
f(6) = [tex]\frac{5}{4(6)-2}[/tex] = [tex]\frac{5}{24-2}[/tex] = [tex]\frac{5}{22}[/tex]
-10x=bm-3
solve for m
Answer:
M=-10x/b+3/b
Step-by-step explanation:
are the triangles similar, AA , SAS, SSS or not ?
Answer:
SSS
Step-by-step explanation:
Can't be AA. (no angles given)
Can't be SAS. No angles Given
Can't be not. (CPCTC)
using absolute value operation what is: -6 and -3
Answer:
Well if you talking about absolute value. Those Values should automatically turn to positive 6 and positive 3
Absolute value is where no matter what number is or integer it is it always turns into a positive number.
A right triangle has a hypotenuse of 15 cm. What are possible lengths for the two legs of the triangle. Explain your answer.
Answer: 15, 3 and 6
Step-by-step explanation: The other leg is 2 × 3 = 6
Solve the inequality for x: 1/2(2x + 4) = 3x -6
Steve bought used and new video games from a website. The new games cost $54 each and the used games cost $9 each. He spent no more than $243 on the video games and he bought no more than 7 video games. Let x represent the number of new video games, and let y represent the number of used video games. Identify an ordered pair that is a solution to the system of inequalities. Interpret the meaning of the ordered pair within the context of the problem by selecting the appropriate explanation.
Answer:
y = 3 used games
x = 4 new games
Step-by-step explanation:
54x + 9y = 243
x + y = 7 then x = 7 - y
substitute for x:
54(7 - y) + 9y = 243
378 - 54y + 9y = 243
reduce:
378 - 45y = 243
subtract 243 from each side:
135 - 45y = 0
add 45y to each side:
45y = 135
divide both sides by 45:
y = 3
x = 7 - 3 = 4
check:
3+4 = 7
7 = 7
54(4) + 9(3) = 243
243 = 243
Find the Volume please help
If q is the centroid of JKL, LN=72,JP=93, and MK=78, find each missing measure
*diagram is in the attachment below
Answer:
Step-by-step explanation:
Given:
LN = 72
JP = 93
MK = 78
Required:
LQ, QN, QP, JQ MQ, and KQ.
Solution:
Apply the centroid theorem to find each missing measure.
✔️LQ = ⅔(LN)
LQ = ⅔(72)
LQ = 48
✔️QN = ⅓(LN)
QN = ⅓(72)
QN = 24
✔️QP = ⅓(JP)
QP = ⅓(93)
QP = 31
✔️JQ = ⅔(JP)
JQ = ⅔(93)
JQ = 62
✔️MQ = ⅓(MK)
MQ = ⅓(78)
MQ = 26
✔️KQ = ⅔(MK)
KQ = ⅔(78)
KQ = 52
A ball is dropped from a height of 192 inches onto a level floor. After the third bounce it is still 3 inches off the ground. Presuming that the height the ball bounces is always the same fraction of the height reached on the previous bounce, what is that fraction?
Answer: The required fraction = [tex]\dfrac18[/tex]
Step-by-step explanation:
Let the required fraction = [tex]\dfrac{p}{q}[/tex]
Given: Initial height = 192 inches
Height of ball after second bounce = [tex]\dfrac{p}{q}\times192[/tex]
Height of ball after third bounce = [tex]\dfrac{p}{q}\times\dfrac{p}{q}\times192=192\dfrac{p^2}{q^2}[/tex]
After the third bounce it is 3 inches off the ground.
So,
[tex](\dfrac{p}{q})^2192=3\\\\\\(\dfrac{p}{q})^2=\dfrac{3}{192}\\\\(\dfrac{p}{q})^2=\dfrac{1}{64}\\\\(\dfrac{p}{q})^2=(\dfrac{1}{8})^2\\\\ \dfrac{p}{q}=\dfrac{1}{8}[/tex]
Hence, The required fraction = [tex]\dfrac18[/tex]
Help me with this plzzzzz I need to finish it rn so PLZZ help asp
Answer:
1. 16π
2. 112π
3. 351.68
Step-by-step explanation:
Area of a circle = πr^2
Substitute...
=4^2π
=16π
To find the how much fluid it can hold, just basically find its volume. To do that, you mutiply the area of the base by the height. So...
16π*7=122π
You then just subsitute π by 3.14 so...
122(3.14)=351.68