To collect data on the signal strengths in a neighborhood, Briana must drive from house to house and take readings. She has a graduate student, Henry, to assist her. Briana figures it would take her 12 hours to complete the task working alone, and that it would take Henry 18 hours if he completed the task by himself. How long will it take Briana and Henry to complete the task together?

Answers

Answer 1

Answer:

Both take time together = 36 / 5 hours = 7.2 hours

Step-by-step explanation:

Given:

Briana take time = 12 hour

Henry take time = 18 hour

Find:

Both take time together

Computation:

Briana 1 hour work = 1/12

Henry 1 hour work = 1/18

Both take time together = 1/[1/12+1/18]

Both take time together = 1/[5/36]

Both take time together = 36 / 5 hours = 7.2 hours


Related Questions

Jeff modeled the number of minutes that he read each day during the first week of the summer. The recursive function, f(x), can be used to determine the number of minutes that he had read after a certain number of days, where x represents the number of days. f(1) = 28 f(x) = f(x - 1) + 8 Use the recursive function to find the number of minutes that Jeff read after 3 days of summer.​

Answers

9514 1404 393

Answer:

  44 minutes

Step-by-step explanation:

We are given f(1) = 28.

Using the recursive formula ...

  f(2) = f(1) +8 = 28 +8 = 36

  f(3) = f(2) +8 = 36 +8 = 44

Jeff read 44 minutes after 3 days of summer.

(a) Find the Total profit function P(q).
(b) Find the first and second derivatives for P(q).
(c) Find the optimum production quantity to maximize profit.

Answers

Answer:

answer is c Find the optimum production quantity maximize profit

What is the scientific notation of 0.00802

Answers

Answer:

8.02 × 10-³

Step-by-step explanation:

Evan is making a table that will be created of the figure below. The table top is a triangle attached to a rectangle. To purchase the right amount of paint he needs to know the area of the table top He can only spend 10 on paint which is enough to cover 150ft of surfaces area. What is the max length of the base of the the rectangle he can build

Answers

Answer:

23 ft

Step-by-step explanation:

The computation of the maximum length of the base of the triangle is as follows:

Area of triangle is = 4 × 6 ÷ 2

= 12 ft²

Now the maximum area of the rectangle is

= 150 - 12

= 138 ft²

L = ?

W = 6 ft

Area of rectangle is  = L × W

L × 6 = 138

L = 138 ÷ 6

= 23 ft

Can someone answer please ​

Answers

Answer:

it's 222

cuz 74•3= 222

....

Answer:

She right

Step-by-step explanation:

23) You are late for work. You have two options for getting to work. You may take the bus which takes on average 40 minutes with a standard deviation of 12 minutes. Or you can cycle which takes on average 50 minutes with a standard deviation of 2 minutes. Compare these two distributions.
You leave your house at 8.05 am and are supposed to start work at 9.00 am.

Which option would you choose if you will be fired if you are even a few minutes late?​

Answers

Answer:

either of them because you wont be late because it only takes 52 minutes for both

Step-by-step explanation:

because

3. Leeland can eat 1 hotdog in 20 minutes. What is his unit rate in hotdogs
per hour?

A 1/2 a hotdog per hour
B 1 hotdogs per hour
C 2 hotdogs per hour
D hotdogs per hour

Answers

Answer:

Hi how are you doing today Jasmine

Answer:

i think more then the awnsers that are givin or im just being a dummy

Step-by-step explanation:

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

Answers

Answer:

X=1 = i√19        Put a vertical line through the second = sign

Step-by-step explanation:

when writing this .....put a line under all the + signs 0k and / is divided by 2

2 + √4-4(1)(20)

2 + √4-80 /2

x=2 +√76/2

x=2 +2i√19    the twos cancel out

1 +i√19

4x−2​(x−4​)=−3+4x+5 please I need help

Answers

Answer:

x=3

Step-by-step explanation:

4x−2(x−4)=−3+4x+5

4x+(−2)(x)+(−2)(−4)=−3+4x+5

4x+−2x+8=−3+4x+5

(4x+−2x)+(8)=(4x)+(−3+5)

2x+8=4x+2

2x+8−4x=4x+2−4x

−2x+8=2

−2x+8−8=2−8

−2x=−6

−2x /−2 = −6 /−2

x=3

X is 3................

find the difference between (-2,3) and (6,3) ​

Answers

Answer:

5.099

Step-by-step explanation:

Answer:

The difference between (-2,3) and (6,3) is 8

Step-by-step explanation:

equation of a line in slo[e-intercept form given the slope = 6 and it passes through the point (1, 8)

Answers

Answer:

math way

Step-by-step explanation:

an amusement park sold 46 child tickets. The other 4 tickets it sold were adult tickets. What is the ratio of the number of adult tickets to the number of child tickets? Select all correct ratios

Answers

Answer:

2:46

1:23

Step-by-step explanation:

Which is the equation of a line that is perpendicular to the line
y
=

5
x
+
11
?

Answers

Answer:

y=1/5x

Step-by-step explanation:

hopefully that helped

I need help please.Please

Answers

Answer:

Store A

Step-by-step explanation:

Store A

50/100=0.5

0.5×5=2.5

The watch will be 50-2.5=47.5

Store B

60/100=0.6

0.6×20=12

The watch will be 60-12=48

So the watch price in store A is better

Answer:

You should buy from Store A because you're paying $0.50 less than if you were to buy from Store B.

Step-by-step explanation:

First, don't subtract if it's a percentage. You will want to multiply to get the amount you're removing from the original price.

Let's look at Store A. $50 and 5% discount. 50 * 0.05 = 2.5. Remove 2.5 from 50.

50 - 2.5 = 47.5

When you buy from Store A, you will pay $47.5

Let's look at Store B. $60 and 20% discount. 60 * 0.20 = 12. Remove 12 from 60.

60 - 12 = 48

When you buy from Store B, you will pay $48

Ultimately, Store A is the best option because you're paying less.

factor the following
42x+28y

Answers

Answer:

To find the GCF, do the prime factorization of both numbers.

42 = 2 x 3 x 7

28 = 2 x 2 x 7

The GCF uses the numbers that appear in BOTH, 2 x 7 = 14 is the GCF of the numbers.  There is no variable GCF because there isn't a variable that appears in both.

Taking out the GCF gives you:

14(3x + 2y)

Step-by-step explanation:

Answer:

14(3x + 2y)

Find the GCF.

It is 14.

Use the distributive property.

Then, multiply each term.

One of the objectives for this lesson is to find the length of a curve using the z score.

True
False​

Answers

Answer:

true

Step-by-step explanation:

Create the f(x) function based on the table. Answer should be in function notation

Answers

Answer:

It will be

f(x)=x+4

CAN SOMEBODY PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

x-intercept=-2

y-intercept=3

Subtracting Fractions with Unlike Denominators
5/6 - 2/3 =



4/6

1/2 - 1/3 =


0/16

7/8 - 1/4 =


2/8

11/12 - 2/3 =


4/12

3/4 - 2/3 =


1/12

5/8 - 1/2 =


5/8 - 4/8 =


1 - 2/3 =



5/8 - 1/5 =



5/9 - 1/4 =


1/3 - 1/7 =



4/5 - 3/7

Answers

Answer:

5/6-2/3=1/6

Step-by-step explanation:

You make the denominators the same. Like 5/6 and 2/3 you can make the fractions have the same denominator.

5/6-2/3 is the same as the equation 5/6-4/6 but simplified.

(8x+1)÷5=3x-6

find x

Answers

Answer:

31/7

Step-by-step explanation:

8x+1 = 15x-30

31 = 7x

(31/7) = x

Answer:

8x + 1 =3x-6

--------

5

8x+1=15x-30

8x-15x= -30-1

-7x=-31

x=31

---

7

x=4.42

On a very cold morning, it was -7°F. As the day went on, the temperature rose 3 degrees each hour. Which equation shows the temperature over time?
A.y=-3x-7
B.y=-3x+7
C.y=3x-7
D.y=3x+7

Answers

Answer:

The equation shows the temperature over time will be:

[tex]y = 3x - 7[/tex]

Hence, option (C) is correct.

Step-by-step explanation:

We know that the slope-intercept form of the line equation is

[tex]y=mx+b[/tex]

where m is the rate of change or slope and b is the y-intercept

Let 'y' be the temperatureLet 'x' be the time in the hour

Given that one very cold morning, it was -7°F.

Thus, the y-intercept = b = -7

Given that as the day went on, the temperature rose 3 degrees each hour.

Thus, the rate of change = slope = m = 3

Thus, substituting m = 3 and b = -7 in the equation

[tex]y = mx+b[/tex]

[tex]y = 3x + (-7)[/tex]

[tex]y = 3x - 7[/tex]

Therefore, the equation shows the temperature over time will be:

[tex]y = 3x - 7[/tex]

Hence, option (C) is correct.

Jeremy can do 22 push ups in 4 days. At this rate how many push-ups can he do in 6 days

Answers

Answer:

I think it's

Step-by-step explanation:

22=4

c=6

132,=4c

c=132/4

c=33

Answer:132 push ups

Step-by-step explanation:

Which of these is an example of driving at an average rate of 20 miles per hour?
driving 10 miles in 2 hours
O driving 25 miles in 5 hours
O driving 15 miles in 5 hours
driving 40 miles in 2 hours

Answers

Answer:

driving 40 miles in 2 hours

A rectangle of area seven square centimetre is cut into three equel rectangle what is the area of each​

Answers

7cm^2=2.33cm^2 for each rectangle

7/3 square centimeters

Mark paid $54.60 to fill his car's gas tank. The gas tank was empty and the cost of gasoline was $3.90 per gallon.

Answers

54.60/3.90=14
Mark’s gas tank will fill up with 14 gallons of gas.

to compound 50% solution in which proportion must 95% sol and 30% sol be mixed to make
500 ml

Answers

Answer:

4/9

Step-by-step explanation:

Let the amount of 95% sol = a ml and

the amount of 30% sol = b ml.

So, the total amount of the compound=a+b=500 ml

As the compound is 50% solution, so

95% of a + 30% of b= 50% of (a+b)

(95/100)a+(30/100)b=(50/100)(a+b) [from equation (i)]

95a + 30b = 50(a+b)

95(a/b)+30 = 50(a+b)/b [dividing both sides by b]

95(a/b)+30 = 50(a/b+1)

95(a/b)+30 = 50(a/b)+50

95(a/b)-50(a/b)=50-30

45(a/b)=20

a/b=20/45

a/b=4/9

Therefore, a:b=4:9

As a+b= 500 ml, so the amount of 95% sol = [tex]\frac {500}{13}\times 4=\frac{2000}{13}=153.85[/tex] ml

and the amount of 95% sol = [tex]\frac {500}{13}\times 9=\frac{4500}{13}=346.15[/tex] ml

Hence, the proportion of 95% sol and 30% sol to make a compound of 50% sol must be 4/9.

Find the values of a and b so that the linear system has the given solution.
Given Solution: (2, 1)
Equation 1: ax - by'= 4
Equation 2: bx - ay = 10

Answers

Answer:

The values are a=6, b=8

Step-by-step explanation:

System of Equations

We are given the system of equations:

ax - by = 4

bx - ay = 10

And it's known the solutions are: x=2, y=1.

Plugging in the solutions:

2a - b = 4      [1]

2b - a = 10      [2]

Now we have to solve the system above. Multiply [1] by 2:

4a - 2b = 8

Now we add with [2]:

3a = 18

a = 18/3 = 6

a = 6

From [2]:

2b - 6 = 10

2b = 16

b = 16/2 = 8

b = 8

The values are a=6, b=8

Use the table below to answer the question.

Price Quantity Supplied of T-shirts Quantity Demanded of T-shirts
$5
0
300
$10
100
100
$25
300
50
$50
400
0
At the highest price of $50, producers supply _____ T-shirts and consumers demand _____T-shirts.

100, 100
0, 300
400, 0

Answers

Answer: 400,0

Step-by-step explanation:

I just took this on Ody

1 over 4 as a decimal

Answers

Hey there!

If you want to CONVERT a FRACTION INTO a DECIMAL , all you have to do is this SIMPLE step!

Which is to DIVIDE the NUMERATOR from the DENOMINATOR

The numerator is the TOP number

The denominator is the BOTTOM number

Now let’s solve for your answer

1/4 = 0.25 because 0.25 • 4 = 1

Answer: 0.25 ☑️

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

Determine the quotient of 1 and 2 over 3 divided by 4 over 5 . (2 points)

1 and 1 over 3
1 and 8 over 15
2 and 1 over 12
2 and 5 over 6

Answers

Answer:

2 and 1 over 12

Step-by-step explanation:

[tex]1 \frac{2}{3} \div \frac{4}{5} \\ \\ = \frac{1 \times 3 + 2}{3} \div \frac{4}{5} \\ \\ = \frac{5}{3} \times \frac{5}{4} \\ \\ = \frac{25}{12} \\ \\ = 2 \frac{1}{12} \\ [/tex]

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