All categories

3 years ago

PLZZ HELP What is the value of x?

Mathematics

2 answers:

hichkok12 [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Triangle is a 45 45 90 right triangle

Ratio of leg : hypotenuse = x : x√2

Given leg = 7√2

so hypotenuse x = 7√2 * √2 = 14

nekit [7.7K]3 years ago

4 0

Answer:

X = 14

Step-by-step explanation:

7√2

sin (45) = ------------

x = 7√2 / (sin 45)

x = 14

You might be interested in

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.

6 0

2 years ago

Freeeeeee Points whats 2 plus 100009

yKpoI14uk [10]

Answer:

free points??????????? thank h so much

7 0

2 years ago

which statement couls be used to explain why the function h(x)=x³ has an inverse relation that is also a function

Gnom [1K]

Answer: Option 4

Step-by-step explanation:

The way to tell if a function has an inverse is to see if it passes the horizontal line test (if a horizontal line crosses the graph more than once).

<em>P.S. I hope this helped! Feel free to tell me if I got it wrong, I'll try my best to fix it. </em>

7 0

1 year ago

32 POINTS

Nimfa-mama [501]

Answer:

Step-by-step explanation:

5 0

3 years ago

Find the areas of the sectors formed by ABC

Amanda [17]

Answer:

33.51 in^2

Step-by-step explanation:

Find the area of the circle:

A = πr^2

A = π * 8^2

A = 64π = 201.06 in^2

Find the area of the 60 deg slice:

A * 60/360 = 33.51 in^2

Leave a thanks and mark brainliest if this helped

6 0

3 years ago