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2 years ago

How to do question five

Mathematics

1 answer:

-BARSIC- [3]2 years ago

8 0

I believe the answer is 46.
Remember "PEMDAS" when doing equations like these :)

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1. 2x + 2y = 10

liq [111]

Hopefully this helped! I used the substitution method

3 0

2 years ago

John has a boat that will travel at the rate of 15 kph in still water. He can go upstream for 35 km in the same time it takes to

Otrada [13]

Answer:

The boat traveling at 24 kph when John goes downstream.

Step-by-step explanation:

We are given the following in the question:

John has a boat that will travel at the rate of 15 kph in still water.

Let x be the speed of the current.

Speed of boat in upstream

$(15-x)\text{ kph}$

Speed of water in downstream

$(15+x)\text{ kph}$

Relation:

$\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}$

We have to find the speed of boat in downstream.

Time to travel upstream for 35 km = Time to travel 140 km downstream

$\displaystyle\frac{35}{15-x}=\frac{140}{15+x}\\\\35(15+x) = 140(15-x)\\525 + 35x = 2100 - 140x\\175x = 1575\\x = 9$

Thus, speed of current is 9 kph.

Speed of boat in downstream = 15 + 9 = 24 kph.

Thus, the boat traveling at 24 kph when John goes downstream.

4 0

3 years ago

Un trabajador gano el lunes 2 y 2/3 euros y el martes 2/5, cuantos euros gano en los dos días?

babymother [125]

Answer: <em>no hablo espanol</em>

5 0

1 year ago

Read 2 more answers

In a class of students, the following data table summarizes

Ksenya-84 [330]

Answer:

Step-by-step explanation:

you have t as a total amount of the whole class.

f= did not pass and you place the total number next to it like this; f/t represents that group. You continue this in your workings.

f/t = probability failed.

p/t = probability passed

c/t = probability completed

dc/t = probability did not complete

and draw a tree.

The random would be either of these, we know there s a possibility of 1/4 but the odds stay central. We look for a new way after this data is converted as a fraction and show these fractions as your answer.

4 0

3 years ago

Is this correct? Explain. <br><br> 48 - 24k = 12 (4 - 2k)

VLD [36.1K]

It is correct because if you do the math you will come up with 48 - 24k = 48 - 24k

7 0

2 years ago

Read 2 more answers