Each hour,
x makes b/6 bearings
y makes b/4 bearings
z makes b/3 bearings

Together, each hour, x, y and z together make
b/6+b/4+b/3=b(1/6+1/4+1/3)=b(2/12+3/12+4/12)=b(3/4)=3b/4 bearings.

Time to make b bearings =
b/(3b/4)=4/3 hours = 1 hour 20 minutes.

4 0

3 years ago

Evaluate 24 + |x - 4| - y if x=2 and y= -3<br><br> Help me plz

Sonja [21]

Answer:

$\huge \boxed {29}$

Step-by-step explanation:

$24 + |x - 4| - y$

Given x = 2 and y = -3. Therefore, substitute x = 2 and y = -3 in the expression.

$24 + |2 - 4| - ( - 3) \\ 24 + | - 2| + 3$

Multiplying the negative with negative equal positive. All negative numbers in the absolute will become positive.

$24 + 2 + 3 = 24 + 5 = 29$

Therefore the answer is 29.

5 0

3 years ago

Read 2 more answers

Which of the following are identities? Check all that apply. A. cot2x + 1 = csc2x B. tan2x = 1 - sec2x C. sin2x = 1 + cos2x D. s

kirill115 [55]

I'll assume those are squares. We know D is an identity:

$\sin^2 x + \cos ^2 x = 1$

Dividing through by $\sin ^2 x$

$1 + \cot^2 x = \csc^2 x$

That's A.

Dividing the original through by $\cos ^2 x$

$\tan^2 x + 1 = \sec^2 x$

Not quite B, wrong sign on tangent.

C has the wrong sign on cosine squared as well.

Identities: A & D

4 0

3 years ago