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erik [133]
3 years ago
15

A hot water tap filled a bath in 7 1/2 minutes,while a cold water tap fills it in 5 minutes,how long will it take to fill the ba

th when both taps are turned on together?​
Mathematics
1 answer:
Kisachek [45]3 years ago
4 0

Answer:

3 minutes

Step-by-step explanation:

Let's say that the bathtub is 15L

It would take 7.5 mins to fill 15L

15L/7.5 = 2L per minute

The other tap would take 5 minutes to fill 15L

15L/5 = 3L per minute

3L per minute + 2L per minute = 5L per minute

15L/5L per min = 3 minutes

Sorry for the delay. Accidentally pressed the answer button without the answer. Hope I helped.

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Follow the directions to solve the system of equations by elimination.
omeli [17]

Answer:

X= 1/2 Y= 5

Step-by-step explanation:

8x+7y=39-------------(1)--------×2

4x-14y= -68-----------(2)-------×1

16X + 14Y = 78--------(3)

4X- 14Y = -68----------(4)

Addy equation (4) and (3)

20X = 10

dividing bothsides by 20

20X/20= 10/20

X = 1/2

substitute the value of X into equation (1)

8X+7Y = 39

8(1/2)+7Y= 39

4+7Y = 39

7Y = 39-4

7Y = 35

dividing bothsides 7

7Y= 35/7

Y = 5

5 0
2 years ago
What is the cube root of -1000p^12q^3 <br><br> A:-10p^4<br> B:-10p^4q<br> C:10p^4<br> D:10p^4q
inessss [21]
-10×-10= 100×-10= -1,000
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hope this helps!
4 0
3 years ago
Identify which properties are being used in each step
olga55 [171]
The first one is distributive property
I think the 2nd and last are associative
and the last is commutative
3 0
4 years ago
Uses of water who to right this essay​
Nookie1986 [14]

Step-by-step explanation:

Water makes up more than half of our body weight. Without water, all organisms in the world would die. Water is necessary not only for drinking but also for our day to day life purposes like bathing, cooking, cleaning, and washing and so on. We cannot imagine a life without water.

5 0
3 years ago
9. An ice cream cone has a diameter
chubhunter [2.5K]

Answer:166.7 milliliters

Step-by-step explanation:

height(h)=13cm

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r=3.5cm

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Volume=(3.14x3.5x3.5x13) ➗ 3

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Volume=166.7cm^3

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Therefore 166.7cm^3=166.7mL

6 0
4 years ago
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