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Luba_88 [7]
3 years ago
11

BC= Round to the nearest hundred

Mathematics
2 answers:
katovenus [111]3 years ago
6 0

Answer:

a = 2.28

Step-by-step explanation:

BC = a

\frac{a}{ \sin(A) }  =  \frac{c}{ \sin(C) }  \\  \frac{a}{ \sin(50) }  =  \frac{3}{ \sin(90) }  \\  \frac{a}{0.76}  =  \frac{3}{1}  \\ a  \times 1= 3 \times 0.76 \\ a = 2.28

Vera_Pavlovna [14]3 years ago
3 0

Answer:

2.3 units

Step-by-step explanation:

The unknown side is opposite the given angle 50 degrees, and the length of the hypotenuse is 3 units.

Since sin Ф = opp / hyp, we have here sin 50° = x/3, or x = 3 sin 50°.

Using a calculator, we find that the sine of 50° is 0.776.

Therefore, x = 3(0.766) = 2.298 units, or approximately 2.3 units

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Thirteen people are entered in a race. If there are no ties, in how many ways can the first three places be awarded?
Leni [432]

Answer:

666.888.000.333

Step-by-step explanation:

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5 0
1 year ago
What are the zeros of the quadratic function f(x) = 6x^2 + 12x – 7?
irinina [24]
<span>6x^2 + 12x – 7 = 0

Use the quadratic formula:

x=  \frac{-b +/-  \sqrt{b^2 -4ac} }{2a}

\frac{-12+/- \sqrt{ 12^{2} -4(6)(-7)} }{12} = \frac{-12+/-17.66}{12}

x = 0.47 and x = -2.47
</span>
3 0
2 years ago
What is 5 x 7 - 12 + 56 - 9 ?
-BARSIC- [3]

Answer: 70

Step-by-step explanation:

5 multiplied by 7 is 35.

35 - 12 is 23.

23 + 56 is 79.

79 - 9 is 70.

4 0
3 years ago
The table shows three values of x and their corresponding values of f (x) for a linear function f, such that f (r) = 0 and f (0)
Rus_ich [418]

Using a linear function, it is found that the product rs is rs = 81.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem, when x changes by 68(from -64 to 68), y changes by -16(from 12 to -4), hence the slope is given by:

m = -16/64 = -0.25.

Hence:

y = -0.25x + b.

When x = 34, y = -4, hence this is used to find b.

-4 = -0.25(34) + b

b = 4.5.

Hence the function is:

y = -0.25x + 4.5.

f(r) = 0, hence:

-0.25x + 4.5 = 0

x = 4.5/0.25

x = 18

r = 18.

f (0) = s, hence s = 4.5.

Then the value of the product is:

rs = 18 x 4.5 = 81.

More can be learned about linear functions at brainly.com/question/24808124

#SPJ1

7 0
1 year ago
Help me with these2 question plz and I will press the thanks button
den301095 [7]
7) 62 - 9.817
= 52 . 183

8) 35.1 + 4.89
= 39 . 99


Hope I can help you :)

6 0
2 years ago
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