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:
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:
40 minutes
Step-by-step explanation:
70 minutes - 30 minutes
Related Questions
Please answer quickly and tell me how you got the answer! Will give brainliest
Answers
Answer:
9hrs and 20mins
Step-by-step explanation:
no. of pages time taken
75 2hrs
350 ?
We can set this up as a relation and solve for the unknown.
Let x = # hrs
2hrs / 75pgs = x / 350pgs (the relation )
(350pgs) (2hrs / 75pgs) = x (divide both sides by 350 to isolate x )
9-1 / 3hrs = x (solve for x )
1 / 3 hr = 20mins
So, it should take Sam 9hrs and 20mins to read the entire novel.
How much interest is earned on $2,078.24 at 0.6% for eight years?
$1096.99
$109.96
$199.76
$99.76
Answers
Answer:
109.96
Step-by-step explanation:
I got about 109 so it rounds to 109.96
Explanation
The amount x the number of years
2078.24x8= 16625.92
The total x the interest rate
16625.92 x 0.6%= 99.75552
Estimate
99.75552≈ $99.7
A mirror frame in the shape of an oval is shown below. The ends of the frame form semicircles:
An oval is formed by a rectangle with semicircles at each end. The length of the rectangle is 54 inches. The width of the rectangle is 27 inches.
Which of the following is the perimeter of the inner edge of the frame?
(π = 3.14)
192.78 inches
246.78 inches
277.56 inches
331.56 inches
please help lol
Answers
Answer:
The answer is 192.78 inches
Step-by-step explanation:
An oval is formed by a rectangle with semicircles at each end. We can visualize this easily.
The length of the rectangle is 54 inches.
The width of the rectangle is 27 inches.
The perimeter of rectangle is =
=
= 162 inches
And because there are two semicircles, we can combine them to form a circle. So, perimeter of a circle is called a circumference.
The width of the rectangle forms the diameter, so its half will be the radius.
r =
The circumference is given by :
= inches
Now as the described oval shape is a complete figure without lines inside, we will subtract the width of both sides of the rectangle from the complete perimeter.
The complete perimeter is = inches
The inner edge perimeter will be = = 192.78 inches
pls mark as brainliest
Answer:
1st option
Step-by-step explanation:
Find the surface area of the 3D shape.
Find the total surface area of the following cuboid.
Question 4 options:
88 cm2
44 cm2
48 cm2
12 cm2
Answers
Answer:
88
Step-by-step explanation:
https://www.calculator.net/surface-area-calculator.html?rtanklength=2&rtanklengthunit=yards&rtankwidth=6&rtankwidthunit=yards&rtankheight=4&rtankheightunit=yards&rectcal=Calculate#rectangular
could someone help me please?
Answers
Answer:
To me its to me fuzzy can you bring it closer
Step-by-step explanation:
order the values from least to greatest |-16|, 10, |25|, -16, |-43|
Answers
Answer:
-16, 10, 16, 25, 43
Step-by-step explanation
when you have something in absolute value bars it's always going to be positive so you would make -16 regular 16; and 10 stays 10; 25 stays 25; -16 stays - 16; and then -43 turns into regular 43
Answer:
-16, 10, 16, 25, 43
Step-by-step explanation:
If it has the bars around it and its a negative number it turns into a posotive
A runner has run 1.192 kilometers of a 10-kilometer race. How much farther does he need to run to finish the race?
Answers
Answer:
8.808 kilometers
Step-by-step explanation:
10-1.192=8.808
Answer:
8.808 kilometers
Step-by-step explanation:
All you have to do is subtract.
yea, i got another one..... i do not like geometry...
Answers
Andre is ordering ribbon to make decorations for a school event. He needs a total of exactly 50.25 meters of blue and green ribbon. Andre needs 50% more blue ribbon than green ribbon for the basic design, plus an extra 6.5 meters of blue ribbon for accents. How much of each color of ribbon does Andre need to order?
Answers
Answer: Andre is ordering ribbon to make decorations for a school event. He needs a total of exactly 50.25 meters of blue and green ribbon. Andre needs 50% more blue ribbon than green ribbon for the basic design, plus an extra 6.5 meters of blue ribbon for accents. How much blue ribbon does Andre need to order?
Andre needs exactly 32.75 m of blue ribbons and 17.5 m of green ribbons.
Step-by-step explanation:
Andre requires exactly 50.25 m of blue and green ribbons. It is given in the question that there has to be 50% more blue ribbon than green ribbon, plus an extra 6.5 meters of blue ribbon for accents.
Answer:
32.75 m of blue ribbons and 17.5 m of green ribbons..........
Step-by-step explanation:
Giovanni buys a sweater at a store. The normal price is $30 but the sweater is on sale for 25% off.
a) How much in dollars will Giovanni save from the sale?
b) What is the sale price of the sweater?
c) The next week, Giovanni goes back to the same store and sees the same sweater. Now it’s on sale for $18. What is the percent decrease from the original $30 price to the new $18 price?
Answers
Answer:
Step-by-step explanation:
a. 7.50
b. 22.50
c. 40%
B.) $22.5
C.) 60% decrease
Hector drank 6 glasses of orange juice that contained a total of 360 calories. What was the unit rate (calories per glass)?
Answers
Answer:
60 calories per glass.....
Answer:
60 calories per glass
Step-by-step explanation:
360 divided by 6 equals 60
Rosa can run 4 miles in 56 minutes. How many miles does Rosa run if she runs for 42 minutes?
A 5 miles
B 3 miles
C 3.5 miles
D 2 miles
Answers
Answer:
B) 3 miles
Step-by-step explanation:
1/3 + 1/4
help please
Answers
Answer:
2/7
Step-by-step explanation:
Bob's Gift Shop sold 800 cards for Mother's Day. One salesman, Maya, sold 10% of the cards sold for Mother's Day. How many cards did Maya sell?
Divide/scale down to solve for the missing percent.
Answers
Answer: 80
Step-by-step explanation:
100% - 90% = 10% > 0.1
800 / 0.1 = 80
80 Cards = 10% | 800 x 0.9 = 800, + 80 = 880
Mathematics 12 points!
Please Say A) B) C) D) as your answer
Answers
C is the answer to this mcq
simplify
(a^m/a^n)^m+n×(a^n/a^p)^n+p8×(a^p/a^m)^p+m
step by step
Answers
Answer:
m+a-1mn+m2+a-1np+n2n+a-mp+p2p8
Step-by-step explanation:
i just know sorry if this is wrong... :(
A/m/a^m^a/n
Can someone help asap I will make you the brainliest
Answers
Answer: 45
have a great day/night and crush that homework/class!! ur loved
I REALLY NEED YOUR HELP!!!!! I WILL GIVE YOU THE BRIANLIEST THINGY!!!!!!!!!
Write an equation for each word problem.
1. Four times a number increased by 25 is 13 less than six times the number. Find the number.
2. Three times a number decreased by 8 is the same as twice the number increased by 15. What is the number?
3. Madison has $6 more than Saul. Together Madison and Saul have $90. How much money do they each have?
4. Konrad has $57 in his change jar and adds $3 each week. In how many weeks will the change jar have more than $72?
5. Omar needs at least $2,150 to buy a used car. He already has $1,800 saved in his bank account. If Omar saves an additional $35 a week, in how many weeks will he have saved enough to buy his car?
6. A taxi company charges $2.25 for the first mile and $0.20 for each additional mile. If David’s taxi fare was $6.05, how many miles did he travel?
7. Charlie and Patrick have the same number of action figures in their collections. Charlie has 6 complete sets plus 2 individual figures. Patrick has 3 complete sets plus 20 individual figures. How many figures are in a complete set?
8. An apple has 30 more calories than an orange. Five oranges have about as many calories as 3 apples. How many calories are in each?
Answers
2. 3x - 8 = 2x + 15
3. Saul: x = 90/2 - 6
Madison: x = 90/2 + 6
4. 57 + 3x > 72
5. 1,800 + 35x ≥ 2,150
6. 2.25 + .2x = 6.05
7. 6x + 2 = 3x + 20
8. 3(x + 30) = 5x
Kenny is building a box using 2 identical square pieces of wood and 4 identical rectangular pieces of wood, as shown. What is the surface area of the box?
Select one:
84
336
108
434
Answers
Answer:
Step-by-step explanation:
108
Answer:108
Step-by-step explanation:
my brain told me
NEED HELP!!
which set of equations represents the system of linear equations shown on the graph?
Answers
1. Plot at least 10 points whose y-coordinate is -4.
What do you notice about them?
2. Which equation makes the most sense to represent all of the points with -coordinate -4? Explain how you know.
Answers
Answer: answer in screenshots down below
Step-by-step explanation:
100 PTS *MIDDLE SCHOOL 7th GRADE***** HELP PLEASE!
Answers
Answer: x=108 degrees
Step-by-step explanation:
Since ST is a straight line, it measures 180 degrees.
This means that
x+(2/3)x=18
The simplified version is 5x/3=180. Now, we multiply both sides by 3. The equation becomes 5x=540 you would divide 5 by both sides which is ultimately x=108.
Answer:
x=108 degrees
Step-by-step explanation:
We know that since ST is a line, it equals a total of 180 degrees.
Let's write an equation:
\(180=x+\frac{2}{3}x\)
simplify
\(180=\frac{5}{3} x\)
divide both sides by 5/3
108=x
So, x=108 degrees.
Hope this helps! :)
The probability of rolling a number less than 3 on a number cube is 2/6. What is the probability of its complement? Simplify your answer.
Answers
Answer:
4/6
as we know probability of rolling a number less than 3 on a number cube is 2/6 and then its complement (opposite, greater than 3) that is 4/6
Determine the ending position by adding and subtracting the indicated steps from each starting position. List your answers in order.
Answers
7-6+2=3
5-2+4=7
0-5+8=3
-4-3+7=0
I think that’s how you do it? If it’s going left to right for each
3
7
3
0
Those are the answers in order nwn
If xx and y vary directly and y is 21 when x is 7, find y when x is 5
Answers
Answer:
y = 15
Step-by-step explanation:
We need to solve for k
y = x
21 = 7k Divide both sides by 7 to solve for k
3 = k
y = xk
y = 5(3)
y = 15
Answer: y = 15
Step-by-step explanation:
Write an algebraic expression for the given word expression:
A number b decreased by itself
Answers
where b=2
24-24=0
Hey! if you want a quick 10 points please answer these two questions show your work please :)
Answers
Consider the functions below -
Answers
Answer:
y-intercept
Step-by-step explanation:
In all cases, when x = 0, f(0) = a or b or c.
Answer: y-intercept
Explain the cosine rule and sine rule while also saying how to use it and provide examples (keep it in simple terms)
Answers
Answer:
Sure, I'll explain the cosine rule and sine rule in simple terms:
The cosine rule (also known as the law of cosines) is used to find the length of a side or the measure of an angle in a triangle given the lengths of the other sides and the angle between those sides. It states that c^2 = a^2 + b^2 - 2ab cos(C), where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.
Here's an example of how to use the cosine
Suppose we have a triangle with sides a=6, b=8, and an angle between them c=45 degrees. We want to find the length of the remaining side of the triangle, side a.
Using the cosine rule:
a^2 = b^2 + c^2 - 2bc * cosA
where A is the angle opposite side a, we can plug in our values and solve for a:
a^2 = 8^2 + 6^2 - 2(8)(6) * cos(45)
a^2 = 64 + 36 - 96 * 0.707
a^2 = 10.56
a = sqrt(10.56)
a = 3.25 (rounded to two decimal places)
Therefore, the length of side a is approximately 3.25 units.
Answer:
Step-by-step explanation:
Bill’s Guitars charges $18 for each guitar lesson plus a $20 sign-up fee. Ava’s Guitars charges $22 for each guitar lesson with no sign-up fee. For how many guitar lessons will the total charges for Bill’s Guitars and Ava’s Guitars be the same?
Answers
Answer: 5 guitar lessons
Step-by-step explanation:
BG = 18x + 20
AG = 22x
AG=BG when 18x + 20 = 22x
18x - 18x + 20 = 22x - 18x
20/4 = 4x/4
5 = x