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3 years ago

24 - 3 1/3 please help!!

Mathematics

2 answers:

strojnjashka [21]3 years ago

7 0

20 and 2/3 is correct, I think

Talja [164]3 years ago

3 0

20 and 2/3 I think is correct

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When registering their cars, owners must identify the color that covers the largest portion of the vehicle. In one region, the p

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Answer:

0.41 probability

Step-by-step explanation:

0.22 + 0.19 = 0.41

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2 years ago

A fisherman traveled in a boat from point N upstream. After having traveled 6 km, he stopped rowing and 2 hour 40 min after firs

Nat2105 [25]

Answer:

The speed of the river's current is 4.5 km/hr.

Step-by-step explanation:

Given : A fisherman traveled in a boat from point N upstream.

After having traveled 6 km, he stopped rowing and 2 hour 40 min after first leaving N, he was brought back to N by the current.

Knowing that the speed of the boat in still water is 9 km/hour

To find : The speed of the river’s current.

Solution :

Let the speed of current = x km/h

Speed of boat = 9 km/h

Thus, the speed in upstream = (9 - x) km/h

Also, the speed in downstream = x km/h (because the boat is stationary in downstream)

Total distance = 6 km ( from N to the point he reached )

Total time = 2 hours 40 minutes

$\text{2 hours 40 minutes}=2\frac{40}{60}=2 \frac{2}{3} \\\\\text{2 hours 40 minutes}=\frac{8}{3} \text{ hours}$

We know, $\text{Time} = \frac{\text{Distance}}{\text{Speed}}$

According to the question,

$\frac{6}{9-x}+\frac{6}{x}=\frac{8}{3}$

Taking LCM and 6 common

$6[\frac{x+9-x}{(9-x)x}]=\frac{8}{3}$

Take 6 to another side,

$\frac{9}{9x-x^2}=\frac{8}{3\times 6}$

Cross multiply,

$9\times 18=8\times(9x-x^2)$

$162=72x-8x^2$

Taking 4 common and cancel out

$4x^2-36x+81=0$

Solve quadratic equation by middle term split,

$4x^2-18x-18x+81=0$

$2x(2x-9)-9(2x-9)=0$

$(2x-9)(2x-9)=0$

$\Rightarrow 2x-9=0$

$\Rightarrow x=\frac{9}{2}=4.5$

Therefore, The speed of the river's current is 4.5 km/hr.

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2 years ago

An acute angle can have all of the following measures except 89 45 10 0

Naddik [55]

0 is the only degree that cannot work

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2 years ago

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PLEASE HELP! PLEASE GIVE ME AN ANSWER AND EXPLANATION! IF YOU DO THIS AND THE ANSWER IS CORRECT... I WILL MARK YOU BRAINIEST!!!!

harina [27]

The weight of the candles is 3/5 greater than of the watermelon, or 60\%, or 0.6.

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3 years ago

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The Jackson family went out to dinner. The price of the meal was $43.45. The sales tax was 7% of the price of the meal. The tip

brilliants [131]

Answer: 53.40

Step-by-step explanation:

Tax = 7% of 43.45 = 3.04

Tip = 15% of (3.04 + 43.45) = 6.91

Total = 43.45 + 3.04 + 6.91

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2 years ago