What is tan(B)?
13
5
B
12
?
tan(B) =
Enter

Answer: He will walk 2 1/4 miles in an hour

Answer:

k = 3

Step-by-step explanation:

If the line passing through the points A (-1,3k) and B (k , 3) is parallel to the line whose equation is 2y+3x=9, then their slopes are equal

For coordinate AB;

slope m1 = 3 - 3k/k-(-1)

m1 = 3-3k/k+1

For the line 2y+3x = 9

2y = -3x + 9

y = -3/2 x + 9/2

Slope m2 = -3/2

Since m1 = m2

3-3k/k+1 = -3/2

Cross multiply

2(3-3k) = -3(k+1)

Expand

6 - 6k = -3k - 3

-6k+3k = -3 - 6

-3k = -9

k = -9/-3

k = 3

Hence the value of k is 3

The value of the variable y in the equation y + 8.5 = 17.2 is 8.7.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the equation for the variable y is y  + 8.5 = 17.2. The value of the y will be calculated as,

y + 8.5 = 17.2

y = 17.2 - 8.5

y = 8.7

Therefore, the value of the variable y in the equation y + 8.5 = 17.2 is 8.7.

To know more about an expression follow

brainly.com/question/25968875

#SPJ5

Answer:

the answer is that the number 8.5 is going to be subtracted.

Step-by-step explanation:

It says in the lesson when a number is going to b added it must be subtracted if the number is going to be subtracted it is going to be added.

so 17.2 - 8.5 = Y. There you go. Welcome.

Answer:

a. 16

Step-by-step explanation:

Find the scale:

42 ÷ 28 = 1.5

Use this scale for QR to find MN:

24 ÷ 1.5 = 16