A water pump takes 70 minutes to fill a tank. A larger pump can fill the same tank in 30 minutes.
How long will it take to fill the tank if both pumps are used?

A. 15 minutes
B. 21 minutes
C. 40 minutes
D. 50 minutes

Answers

Answer 1

Answer:

21 minutes Option B

Step-by-step explanation:

1 min

Small --> 1/70

Big --> 1/30

Together --> 1/70 + 1/30 = 3/210 + 7/210 = 10/210 = 1/21

1 divided by 1/21 = 21

Thus, it's 21 minutes (B)

Answer 2

Answer:

40 minutes

Step-by-step explanation:

70 minutes - 30 minutes


Related Questions

simplify the expression:
20m^3
over
32m^5

Answers

Answer:

5 over 8m ^2

Step-by-step explanation:

20m^3

32m^5

m^3 divided by m^5 equals one over m^2.

20 divided by 32 is 5 over 8.

Multiply these and you'll get 5 over 8m^2

Answer:

0.00023841857

125/524288

Step-by-step explanation:

Decimal form: 0.00023841857

Fraction Form: 125/524288

Solve the mathematical puzzle.
Determine the digits of R from these clues.
The first digit is the answer when the third digit is divided by 2.
The second and third digits add to 7.
The second digit minus the first digit is 1.
R is a three-digit number:
243
342
234
432

Answers

Answer:234

Step-by-step explanation:

Just look at the choices and try to find the right one with those features

1. Carol puts $5.50 in her piggy bank each week. She has been doing this for 15 weeks. How much has she saved?

2.Buttons come in packs of 12. How many packs should you buy if you need 50 buttons?

3.The florist puts 8 flowers in a vase. How many vases can she fill completely if she has 75 flowers?

4.Caleb bought a t-shirt at the Aquarium for $7.99. He gave the clerk $10. How much change did he receive?

Answers

1. Carol will have 82.50 cuz 5.5 times 15 is 82.5.
2. You need to buy 5 packs of buttons since 5 packs is 60 and 4 is 48. And more buttons is better then less

1. 4x - 5 ( for x is 4 )
2. 2a + 5 ( for a is 3 )
3. 6(n-5) + 3 ( for n is 9 )
4. 2( 3y - 2) for y is 2

Answers

Answer:

11

12

24

16

substitute variable for the number and solve  

1. 11.
2. 11
3. 27
4. 8

Hey guys I really need help with this one exercise soo maybe can someone plzz help for 20 points? Write also the whole detail of your answer plz!

Math problem: There are 36 carpenters in a crew. On a certain day, 29 were present. What percent showed up for work? (round to the nearest tenth)

Answers

Answer:

10%

Step-by-step explanation:

Answer:

The percentage showed up for work is 8.556 %

● Given that total number of Carpenters is 36.

● On a certain day only 29 carpenters were present.

● To calculate the percentage we have to divide the number of carpenters present on that specific day by the total number of carpenters and multiply the product with 100 i.e., we have to divide 29 with 36 and multiply it with 100.

Percentage = (29 / 36) * 100

= (0.80556) * 100

= 80.556

● Therefore the required percentage is 80.556%

Step-by-step explanation:

If Candace made a scatter plot of the math scores of eighth-grade students (vertical scale) and their heights in inches (horizontal scale), what type of line of best fit should she expect the scatter plot show?

A. a line with positive slope
B. a line with negative slope
C. a horizontal line
D. There would be no line of best fit.

Answers

Answer:

The correct option is (D).

Step-by-step explanation:

A scatter plot is a mathematical graph used to display the linear relationship between two variables.

Points are plotted on the graph and a line of best is drawn to represent the linear relationship between the two variables.

If the line is upward moving this implies that there is positive relation between the variables.

If the line is downward moving this implies that there is negative relation between the variables.

If there is no line of best fit that can be formed using the data provided then this implies that there is no linear relationship between the variables.

The variables math-score and height of the students has no relation between them. This is because the height of a student does not factor the score he/she received in their math exam.

So, the scatter plot for this data will not have a line of best fit.

Thus, the correct option is (D).

PLZZZZ I NEEED HELP!!!


I said please


Answers

Step-by-step explanation:

Angle 128 ° + Angle Y = 180 °

Y = 180 - 128

= 52 °

5x + 3 + Y = 180

5x + 3 + 52 = 180

5x + 55 = 180

5x = 180 - 55

5x = 125 °

x = 125 ÷ 5

x = 25

hello I'm stuck on these if someone helped me and told me how to do it I would be so happy :D

Answers

Answer:

see explanation

Step-by-step explanation:

To find the first 4 terms, substitute n = 1, 2, 3, 4 into the sequence rule.

For the 10 th term substitute n = 10 into the sequence rule

(a)

n = 1 → 1² + 3 = 1 + 3 = 4

n = 2 → 2² + 3 = 4 + 3 = 7

n = 3 → 3² + 3 = 9 + 3 = 12

n= 4 → 4² + 3 = 16 + 3 = 19

n = 10 → 10² + 3 = 100 + 3 = 103

Thus the first 4 terms are 4, 7, 12, 19 and term 10 is 103

------------------------------------------------

(b)

n = 1 → 2 × 1² = 2 × 1 = 2

n = 2 → 2 × 2² = 2 × 4 = 8

n = 3 → 2 × 3² = 2 × 9 = 18

n = 4 → 2 × 4² = 2 × 16 = 32

n = 10 → 2 × 10² = 2 × 100 = 200

Thus the first 4 terms are 2, 8, 18, 32 and term 10 is 200

plz help i need this asap

Answers

Answer:

option B

Step-by-step explanation:

Using the paystub, how much will Karla’s paycheck be written for?Pay Stub Q1 Question 1 options: a) $260.00 b) $25.73 c) $200.20 d) 4019

Answers

Answer:(b)

Step-by-step explanation:

The kitten weighs 3 pounds. How many ounces does it weigh?
0>) 48 ounces
1) 60 ounces
(3) 19 ounces
) 30 ounces

Answers

Answer:

the first one

Step-by-step explanation:

1 pound equals 16 ounces.

The total number of ounces that it will weight is 48.

What are ounces ?

"The ounce is the name of several different units of mass, weight or volume and is derived almost unchanged from the uncia, an Ancient Roman unit of measurement.

The avoirdupois ounce (exactly 28.349523125 g) is 1⁄16 avoirdupois pound; this is the United States customary and British imperial ounce. It is primarily used in the United States to measure packaged foods and food portions, postal items, areal density of fabric and paper, boxing gloves, and so on, but it is sometimes also used elsewhere in the Anglosphere."

Given,

Number of pounds = 3

[tex]1 pound = 12 ounces[/tex]

So, 3 pound = 12*3 = 48 ounces

Hence, option A is the correct option.

To know more about ounces here

https://brainly.com/question/17408937

#SPJ2

Sasha makes a wooden base for a sculpture with the dimensions shown.

The sculpture is too heavy for the base, so she needs to add a brace from

point C to point E to make the base stronger.

How long does the brace need to be? Round your answer to the nearest tenth.

a) 3.4 ft

b) 4.6 ft

c) 5.4 ft

d) 9 ft

Answers

c? if im wrong so sorry!

Brian and Katie have $40 to spend at the store.
If they get 4 bags of pasta which cost $1 each,
2 cans of tomatoes which cost $2 each, a $3
gallon of milk, and 3 loaves of bread which
cost $3 each, how much change will James
and Kelly receive after their purchase?

$​

Answers

$20 dollars is the change not including tax with tax is 19.33

Answer:

It would be 20

Step-by-step explanation: 4x1=4+2x2=4+3+3x3=9 final answer 40-20=20

can someone please help
me!!

Answers

greater then or equal to
Greater than or equal to

FOR FAST BRAINLIEST limited time only !!! ASAP!!

Easy math, draw a picture of it, the chart !!

Answers

Answer:

[tex]\sqrt{13}[/tex]

Step-by-step explanation:

Please Answer !! A store is having a sale on almonds and jelly beans. For 5 pounds of almonds and 3 pounds of jelly beans, the total cost is $23. For 2 pounds of almonds and 6 pounds of jelly beans, the total cost is $20. Find the cost for each pound of almonds and each pound of jelly beans.

Answers

Answer:Let x = number of pounds of jelly beans

      y = number of pounds of almonds.

 

Then, 4x + 8y = 33

          2x + 3y = 13

 

Multiply the second equation by -2 to get the system:

 

4x + 8y = 33

-4x - 6y = -26

 

Adding the equations, we get 2y = 7.  So, y = 3.5

 

Substitute for y in either of the given equations:  2x + 3(3.5) = 13

                                                                                     2x + 10.5 = 13

                                                                                                 2x = 2.5

                                                                                                   x = 1.25

what is the solution
x/9+7≥10​

Answers

Answer:

x≥27 or A

Explanation:

Well, I just used photo math, hope it helps!

Need help with this please

Answers

Answer:

6.157

-1.009

5.148

ANSWER ASAP PLEASE!
(02.01)A class has 4 boys and 10 girls. What is the ratio in simplest form that compares number of boys to total number of students?

4:14
4:10
2:7
2:5

Answers

Answer:

2:7

Step-by-step explanation:

4+10=14

The least common factor is 2.

4/2=2

14/2=7

Answer:

c. 2:7

Step-by-step explanation:

4+10 is 14

2 is the least common factor

4/2 simplified to 2

14/2 simplified to 7

a. 45
b. 30
c. 85
d. 90

Answers

I’m pretty sure it’s C but idk? Sorry

How do you find the area of composite shapes with rectangles and triangles?

Answers

The area of a rectangle: Base times Height

The area of a triangle: (1/2) times Base times Height.

Happy to help!

A skate board was originally priced at £100 on Thursday.
On Friday the price was reduced by 50%. On Saturday, Friday's price was reduced by a further 30%. On Sunday, Saturday's price was reduced by a final 10%.
What was the final percentage reduction on the original price?

Answers

Answer:

31.5

Step-by-step explanation:

50 percent of 100 would be 50, so you subtract 50 from 100, and 30 percent of 50 is 15, so you subtract 15 from 50 and then get 35, which 10 percent of is 3.5, and finally you subtract 3.5 from 35 and you end up with 31.5.

Which fraction represents 25% of the offspring in a genetic cross?

Answers

Answer:

1/4

Step-by-step explanation:

There should be 4 boxes in a genetic cross

Answer:

1/4 because we already know that 1/4 is equal to 25%

Step-by-step explanation:

What is the relationship between the diameter and radius?
(1 Point)
d=r2
2r=d
2d=r
O
rxr=d

Answers

Answer:

2r = d

Step-by-step explanation:

Diameter is two times of radius.

Diameter = 2 x radius

2 r = d

What is the circumference of the circle? Use 3.14 for pi
d= 33 cm

Answers

Answer:

103.62 cm

Step-by-step explanation:

c=pid

3.14(33)=103.62

Answer:

circumference = 2πr (r = d/2)(r=16.5)

=2×3.14×16.5

=103.62

Step-by-step explanation:

HOPE IT HELPS YOU

Alexa earns $63,000 per year. What is her monthly salary a) $8,000 b) $4,500 c) $5,250 d)$6,320

Answers

Answer:

$5,250 C

Step-by-step explanation:

All you do is $63,000 divided by the 12 months in a year. Then you get your answer of $5,250

Look at the attached picture

Hope it will help you

Plz help fast will give brainiest

Answers

Answer:

X has to be 6 or anything bigger than that.

Step-by-step explanation:

18-12=6

Hope this helped

:)

hi!
got a question!
I couldn't understand this, so please try your best understanding me
The question is : Find the volume of the figure above ​

Answers

Answer:

985.31 cm² is the volume of the figure.

Step-by-step explanation:

First, find the volume of the cylinder

[tex]V=\pi r^{2} h[/tex]      Use this equation to find the volume of the cylinder

[tex]V=\pi (4)^{2} (20)[/tex]     Simplify the exponent and multiply

[tex]V = 320\pi[/tex]            Multiply

1005.31 cm² is the volume of the cylinder

Next, find the volume of the rectangle

V = L x W x H     Use this equation to find the volume of the rectangle

V = 20 x 1 x 1      Multiply

V = 20 cm² is the volume of the rectangle

Subtract the volume of the rectangle from the volume of the cylinder to find the volume of the figure.

1005.31 cm² - 20 cm² = 985.31 cm² is the volume of the figure.

If this answer is correct, please make me Brainliest!

Answer:

I had 271.36cm^3

Step-by-step explanation:

There are 2 figures in the diagram above a cylinder and a cuboid if I'm right

So volume of Figure = V(cylinder) + V(cuboid)

V(cylinder) =pi x rxr xh

Pi=3.142, radius is 2 (since diameter is 4cm), height is 20cm.

So V(cylinder) =3.142x4x20 = 251.36cm^3

V(cuboid) =lbh =1x1x20 =20cm^3

So V(figure)= 20+251.36

=271.36cm^3

HOW IS THE INSCRIBED QUADRILATERAL PROOF WRITTEN?

Answers

Answer:

In the quadrilateral ABCD can be inscribed in a circle, then we have seen above using the inscribed angle theorem that the sum of either pair of opposite angles = (1/2(a1 + a2 + a3 + a4) = (1/2)360 = 180.

Step-by-step explanation:

hope this answers your question

ANSWER QUICKLY PLEASE

Answers

Answer:

0,4 meters

Step-by-step explanation:

1. 0,08 x 2 = 0,16 m² (area of the square)

2. √0,16 = 0,4 m (length of one side)

Answer:

00.08 meters

Step-by-step explanation:

growup0.8 32-6=6

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