Ask question

Ask question

All categories

3 years ago

5

Help plsss it’s timed i need to passss plsss

1 answer:

Free_Kalibri [48]3 years ago

4 0

Answer:

65°

Step-by-step explanation:

To obtain Angle A, we use the cosine rule ;

Cos A = (b² + c² - a²) / 2bc

Cos A = (12² + 14² - 14²) / 2(12)(14)

Cos A = 144 / 336

A = Cos^-1(144/336)

A = 64.62°

A = 65°

You might be interested in

Which is the inverse of the function f(x) = 1/4x-12

Ivanshal [37]

To find the inverse of the function, <span> f(x) = 1/4x-12, first interchange the variables of x and y
x=1/4y-12, now solve for y
1/4y=x+12, multiply by 4 on both sides
y=4x+48
Thus, the inverse of the function</span><span> f(x) = 1/4x-12 is 4x+48
Hope this helps!</span>

8 0

3 years ago

Use function notation to write the equation of the line

blondinia [14]

$f(x)=mx+b\to y=mx+b$

We have two points:

$(-3,\ 0);\ (-4,\ 7)$

The point slope form of the line:

$y-y_1=m(x-x_1)\\\\m=\dfrac{y_2-y_1}{x_2-x_1}$

Substitute

$m=\dfrac{7-0}{-4-(-3)}=\dfrac{7}{-1}=-7$

$y-0=-7(x-(-3))\\\\y=-7(x+3)\\\\y=-7x-21$

Answer:

$f(x)=-7x-21$

8 0

3 years ago

64.3- 3 x 23 - 2 is what.

Lena [83]

Answer: -6.7

Step-by-step explanation:

64.3−(3)(23)−2

=−6.7

3 0

3 years ago

Read 2 more answers

lung cancer kills about 3,000 people per day. if 90% of the deaths from luung cancer are attributted to smoking, what is the rat

defon

Answer:

2700!

Step-by-step explanation:

hope that helped <3

5 0

3 years ago

The five-number summary of the ages of passengers on a cruise ship is listed below. Min 1 Q1 20Median 29 Q3 38Max 80 Consider th

Eddi Din [679]

Answer: b. Only statement (ii) is correct.

Step-by-step explanation:

The given five-number summary of the ages of passengers on a cruise ship is listed below.

Min 1 $Q_1$ 20 Median 29 $Q_3$ 38 Max 80

Inter-quartile range = $IQR=Q_3-Q_1=38-20=18$

According to the 1.5(IQR) criterion for outliers : An data value is an outlier if it lies below $Q_1 - 1.5(IQR)$ or above $Q_3 + 1.5(IQR)$ .

Here , $Q_1 - 1.5(IQR) =20-1.5(18)=-7$

$Q_3 + 1.5(IQR)=38+1.5(18)=65$

Since the minimum value> $Q_1 - 1.5(IQR)$ ( ∵ 1 > -7)

It means there is no value below $Q_1 - 1.5(IQR)$ , so there is no low -outlier.

⇒ Statement (i) "here is at least one passenger whose age is a low outlier. " is false.

But the maximum value > $Q_3 + 1.5(IQR)$ (∵ 85 > 65)

It means there are values above $Q_3 + 1.5(IQR)$ .

⇒Statement (ii) "There is at least one passenger whose age is a high outlier" is true.

Hence, the correct answer is b. Only statement (ii) is correct.

8 0

3 years ago