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sineoko [7]
3 years ago
11

Option 1: Find x. Show all work.

Mathematics
2 answers:
Ronch [10]3 years ago
5 0

Using law of cosines:

Cos(angle) = adjacent/ hypotenuse


Cos(22) = 12/x

Rewrite to get:

X = 12/cos(22)

Simplify:

X = 12.9424

Round the answer as needed.

Zielflug [23.3K]3 years ago
3 0

\\ \tt\Rrightarrow cos\theta=\dfrac{Base}{Hypotenuse}

\\ \tt\Rrightarrow cos22=\dfrac{12}{x}

\\ \tt\Rrightarrow 12=xcos22

\\ \tt\Rrightarrow 12=0.92x

\\ \tt\Rrightarrow x=12/0.92

\\ \tt\Rrightarrow x=13.04

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6. Kriti has a circular swimming pool in her house. The radius of the swimming
Evgen [1.6K]

Answer:

Total walk she did around the pool every morning = 141.3

Step-by-step explanation:

Given - Kriti has a circular swimming pool in her house. The radius of the swimming  pool is 22.5 cm. She walks one round every morning before diving in the pool.

To find - How far does she walk around the pool every morning?

Proof -

Given that, the swimming pool is circular in shape.

So,

1 round of circle = Circumference of circle.

As we know that,

Circumference = 2\pi r

                         = 2*\pi *22.5

                         = 141.3

∴ we get

Total walk she did around the pool every morning = 141.3

7 0
3 years ago
12. The lowest temperature on a winter
ASHA 777 [7]
Answer:
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4 0
2 years ago
What is the measure of ABC
Pavel [41]

Answer:

B.

Step-by-step explanation:

It is the only one that makes sense.

3 0
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mezya [45]

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6 0
4 years ago
n the graph below determine how many real solutions the quadratic function has, and state them, if applicable. List solutions in
IRINA_888 [86]

Answer:

There are no real solutions.

Step-by-step explanation:

There are 3 options.

2 real solutions: This happens if in the graph, each arm intersects the x-axis, this means that there are two different values of x such that the equation:

a*x^2 + b*x + c

is equal to zero.

Another way to see this, is if the determinant:

b^2 - 4*a*c

is larger than zero.

1 real solution: This happens when the vertex of the graph intersects the x-axis. This means that there is a single value of x such that:

a*x^2 + b*x + c

is equal to zero.

Another way to see this is if the determinant:

b^2 - 4*a*c

is larger equal zero.

No real solution: if in the graph we can not see any intersection of the x-axis, then we do not have real solutions (only complex ones).

Another way to see this is if the determinant:

b^2 - 4*a*c

is smaller than zero.

Now that we know this, let's look at the graph.

We can see that the vertex is below the x-axis, and the arms of the graph go downwards. So the arms will never intersect the x-axis (and neither the vertex).

So the graph does not intersect the x-axis at any point, which means that there are no real solutions for the quadratic equation.

The correct answer would be "none"

3 0
3 years ago
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