It takes Tony 15 hours to rake the front lawn while his brother, Jose, can rake the lawn in 12 hours. How long will it take them to take the lawn working together?

Answers

Answer 1

Answer:

they can finish

[tex] \frac{1}{15} + \frac{1}{12} \\ [/tex]

in one hour

[tex] \frac{4 + 5}{60} \\ \frac{9}{60} [/tex]

in 6 hours they can finish

[tex] \frac{9}{60} \times 6 \\ \frac{54}{60} [/tex]

so the left work

[tex] \frac{60 - 54}{60} [/tex]

[tex] \frac{6}{60} [/tex]

they can perform

[tex] \frac{3}{60} work in60 \: minutes \div 3[/tex]

so the can perform

[tex] \frac{6}{60} work \: in \: 20minutes \times 2[/tex]

the take 6 hours and 40 minutes


Related Questions

What is the value of the 4 in 5.874

Answers

Answer:

The 4 is in the thousandths

3. Pete is making 8 identical fruit baskets as
gifts. Each basket contains some apples and
12 oranges. Pete uses a total of 168 pieces
of fruit to make the baskets. Determine the
number of apples that are in each basket.

Answers

9 apples per basket

Peter is making 8 identical fruit baskets. If the baskets are identical, that means they all have the same amount of fruit in them. If I know how many apples were used, then I can divide that by the total number of baskets (8) to find out how many apples were used per basket.

12 oranges were used per basket. There were 8 baskets. 12 x 8 = 96, so 96 oranges were used in total.

168 - 96 = 72

There were 72 apples used in total.

There were the same amount of apples in each of the 8 fruit baskets. 72/8 = 9, which means that there were 9 apples per fruit basket.

Howard buys 5 suits a year when he earns $70,000. When his income increases to $200,000, he buys 15 suits a year. Based on this
information, suits are considered to be
a complementary good.
an inferior good.
a neutral good.
a normal good.
a substitute good.

Answers

Answer:

a complementary good

Step-by-step explanation:

Howard spends $70,000 per year on 5 suits. When his income reaches $200,000, he purchases 15 suits per year. Suits are classified as a normal good based on this information.

What is meant by Normal Good?A normal good is one that sees an increase in demand due to an increase in consumer income. In other words, an increase in wages leads to an increase in demand for ordinary goods, whereas a decrease in wages or layoffs leads to a decrease in demand. In economics, an inferior good is one whose demand falls when consumer income rises (or rises when consumer income falls), as opposed to normal goods, which experience the opposite effect. Normal goods are those whose demand increases as consumer income rises. Normal goods are those for which the relationship between consumer income and quantity demanded is positive. In other words, the income effect is positive while the substitution effect is negative.

To learn more about normal good, refer to:

https://brainly.com/question/12671549

#SPJ2

What is the sum of the measurements of all of the angles in the quadrilateral?

Answers

Answer: 360 degrees

the sum of any quadrilateral in angles is 360 degrees

Answer:

360

Step-by-step explanation:

Each right angle on a rectangle is 90 degrees so if you multiply 90 by 4 you get 180.

Factorise the following.​

Answers

Answer:

(iii). (l-m+n)×(l+m-n)

(vi). (-a+5b)×(5a-b

Write a phrase for each algebraic expression using a word

from the given word bank. Your phrase must include a

word from the word bank.

WORD BANK: more than, less than, quotient, product, cubed

a) m * m * m

b) 4/m

c) 4 + m

d) 4m

e) 4 - m plz help i will give you a brainliest

Answers

A) cubed (you’re multiplying a number by itself, then by itself again )
B) quotient (you’re dividing)
C) more than (you’re adding to something. e.g. Malik had 4 more than Tara)
D) product (you’re multiplying)
E) less than (you’re subtracting from something)

20/4+8/3 answer? I don’t get the question

Answers

Answer:

Step-by-step explanation:

if you need to add 2 fractions

20/4+ 8/3

common denominator is 12

60/12+32/12=92/12= 7 8/12  =7 2/3

A cylinder has a volume of 51[tex]m^3[/tex]. What is the volume of a cone with the same diameter and height as the cylinder?
51 [tex]m^3[/tex]
8.5 [tex]m^3[/tex]
17 [tex]m^3[/tex]
153 [tex]m^3[/tex]

Answers

17 m^3

The formula fir the volume of a cylinder is pi(r^2)(h) where r is the radius and h is the height.

The formula for the volume of a cone is pi(r^2)(h/3)

If the diameters are the same, then the radius’s are the same because radius is half the diameter. The heights are also the same.

In the volume formula for a cylinder, you multiply everything together.

In the volume for a cone, you multiply everything together, then divide that number by 3. The number before being divided by three is the same number as the volume of a cylinder. This means that to find the volume of the cone with the same height and diameter of the cylinder, you just need to divide the cylinders volume by 3.

51/3 = 17, so the volume of the cone is 17

A speed boat travels 1040 meter in 30 minutes. How far will it go in an hour? *

Answers

Answer:

2080 meters

Step-by-step explanation:

An hour is double of 30 minutes so, if you double the length it went you would get how far it goes in an hour, 2080 meters.

which function g represents the exponential function f(x)=3^x after a horizontal stretch by a factor of 4 and a reflection across the y-axis?

Answers

Answer: h(x) = 3^(-x/4)

Step-by-step explanation:

If we have a function f(x), an horizontal stretch of scale factor k is written as:

g(x) = f(x/k)

So, if we have the function f(x) = 3^x

A horizontal stretch of scale factor 4 is:

g(x) = f(x/4) = 3^(x/4)

Now we have a reflection across the y-axis

If we have a function f(x), a reflection across the x-axis is written as:

g(x) = f(-x)

Then if now we apply a reflection across the y-axis to the function g(x), we have:

h(x) = g(-x) = 3^(-x/4)

Then the transformation that we wanted is:

h(x) = 3^(-x/4)

Which statement is true?

1 yard = 3 feet

1 yard = 10 feet

1 yard = 12 feet

1 yard = 36 feet

Answers

Answer:

1 yard = 3 feet

Step-by-step explanation:

1 yard = 3 feet

Help help help help help

Answers

Answer:

vertex is (-4,-3)

and

axis of symmetry is x = -4

Plz provide more information!

HELP ME PLEASE
Boxes A and B contain some counters. 8y + 1 counters Box A 6y + 9 counters Box B. the number of counters in each box is the same. Work out the value of y.

Answers

Answer:

4

Step-by-step explanation:

Equate Box A = Box B

8y + 1 = 6y + 9

2y = 8

y = 8/2

= 4

Given the following image, find the angle of rotation and the number of times each figure can rotate.​

Answers

Rotated: The figure can be rotated  2  times.  Angle of Rotation:  180 ∘

Zak buys 6 gallons of fruit punch. He has
coupons for $0.55 off the regular price of
each gallon of fruit punch. After using the
coupons, the total cost of the fruit punch is
$8.70. Determine the regular price of a
gallon of fruit punch.​

Answers

$8.70 is the total cost without the coupons. He gets 6 gallons. He gets $0.55 off per gallon.

To find the total price Zak got off, multiply 6 and $0.55. 6 x $0.55 = $3.30, so he got $3.30 off.

To find the total price. Add the total cost without the coupons + the amount the coupons saved him.
$8.70 + $3.30 = $12

To find the price per one gallon, divide the total price / number of gallons

$12/6 = $2. The regular price is $2 a gallon

ples i need help 2*7

Answers

are you asking what 2 times 7 is ? if so 14 haha

Answer:

14

Step-by-step explanation:

Hope this helps :)

area: 45. and one side is 8 feet. what is the missing side? (will give brainlist :D)

Answers

Area = length x width
45sqft = 8ft x W
45/8 = W
5.625 ft = W
The missing side is 5.625 feet

How many tiles with dimensions 14 cm and 9 cm will be needed to fit in a rectangular
region whose length and breadth are 168 cm and 72 cm respectively?

Answers

Answer:

96 tiles

Step-by-step explanation:

The number of tiles measured  14 cm and 9 cm that will fit into a rectangular

region whose length and breadth are 168 cm and 72 cm may be computed as a ratio of the areas of the two rectangles.

Hence number of tiles

= 168 * 72/14 * 9

= 12 * 8

= 96 tiles

Can someone help with this?!

Answers

Answer:

-12r + 8s

Explanation:

Since there is a subtraction sign in front of 16r, to combine it with 4r, it must be subtracted, resulting in -12 r (to subtract a greater number from a smaller number, subtract the smaller number from the greater number and make it negative). Since there is an addition sign in front of 3s, to combine it with 5s, the two must be added. 5s + 3s = 8s. When combined, the result is -12r + 8s.

5
You buy a house for $125,000 in 1995 and have the house reappraised in 2010 to find out how
much its value has increased over the years. If the value of the house is $364,000 in 2010, what
is the rate of growth for the house? Round answer to the nearest hundredth.
(4 Points)

Answers

Sh ah hello hello hi hi hi hi

A transformation that maps the vertex A( 3 , 4 ) to A’ ( -4 , 3 ) is :

Answers

Answer:

"A reflection over the line y = x, followed by a reflection over the y-axis"

Step-by-step explanation:

We want to find the transformation that maps the point A (3, 4) into the point A' (-4, 3).

We can see that:

first we have an interchange between the x-component and the y-component.

Then we go from (x, y) to (y, x)

And now we change the sign of the x-component.

Then we go from (y, x) to (-y, x)

This is the transformation we have, now let's find a name for it.

The first transformation is a reflection over the line y = x.

The second is a reflection over the line x = 0.

Then our transformation can be:

"A reflection over the line y = x, followed by a reflection over the y-axis"

Olivia invested $1000 in an account that pays 2.75% interest
compounded annually. Assuming no deposits or withdrawals are
made, find how much money Olivia would have in the account 13 years
after her initial investment. Round to the nearest tenth (if necessary).

Answers

Answer:

$1,422.87

Step-by-step explanation:

Answer: 1422.9

Step-by-step explanation:

The height of a cylinder is 7 inches another cylinder with the same size base has double the volume what is the height of the second cylinder

Answers

Answer:

14

Step-by-step explanation:

Answer:

14

Step-by-step explanation:

what is (2+4i)(-3-3i)

Answers

Answer:

6-18i

Step-by-step explanation:

You solve each one and this is basically simplifying the question

(2+4i)=6

(-3-3i)=-6

the math club has 18 members and 50% are girls. the science club has 25 members and 40% are girls. the principal wants to know which club has more girls. how many girls are in the math club? how many girls are in the science club?

Answers

There’s 9 girls in the math club, and 10 in the science club

Which is an odd monomial function?
O
y = 2x3
1
ya
O y=5x
O y = 3

Answers

Answer:

y=5x

Step-by-step explanation:

because it has only one term which is called monomial.

thank you

A car traveling at constant speed traveled 161.5 miles in 3 1/2 hours. What was the car's speed.

Answers

161.5 miles / 3.5 hrs = 46.143 mph

please show all work i’ll mark brainliest

Answers

Answer:

2/6

Step-by-step explanation:

six sided die so 1/6 of any given number

5 and 6 are only numbers above four

2/7

For his long distance phone service, Abdul pays a $3 monthly fee plus 11 cents per minute. Last month, Abdul's long distance bill was $20.27
For how many minutes was Abdul billed?

Answers

Answer:

157 Minutes

Step-by-step explanation:

20.27 - 30 = 17.27

17.27 / .11 = 157

What is the value of m?

Answers

Angle ADC is a linear pair ( 180° )

[tex] \angle \: ADC = \angle \: ADE + \angle BDE[/tex]

[tex]180 \degree = 112 \degree - \angle \: BDE [/tex]

[tex] \angle BDE = 180 - 112[/tex]

=> BDE = 68°

Similarly,

BCE is a linear pair or straight line.

BEC = BED + DEC

=> 180° = BED + 126°

=> BED = 180° - 126°

=> BED = 54°

As we know that Sum of angles of triangle is 180° .

m + 68° + 54° = 180°

=> m + 122 = 180°

=> m = 180° - 122°

=> m = 58°

The value of m is 58° .

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