MATHEMATICS HIGH SCHOOL

What does the zigzag line in the circuit diagram represent?A. a source of electrical energy

B. an electrical conductor

C. an electrical resistor

D. an open switch

Answers

Answer 1
Answer: The zigzag line in the circuit diagram represents C) an electrical resistor. 
Answer 2
Answer: the zig zags are resistors, the thing on the left is the symbol for a battery. Sometimes a single cell (1.5V); you'd draw a few more plates to show a higher voltage battery. But a DC supply, anyway. The long line is supposed to be the positive terminal.

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Sarah put raisins into 3/4 of the oatmeal cookie dough she was making. She put nuts into 2/5 of the oatmeal cookie dough with the raisins. What fraction of the entire batch has BOTH raisins and nuts.

Answers

The LCM (lowest common multiple) of 4 and 5 is 20, so convert them so that the denominator is 20:

3/4 = 15/20
2/5 = 8/20

I didn't quite read the question properly, but regardless. Since only 15/20 of the batch has raisins, of which only 8/20 has nuts, we can formulate this equation to solve:

1x15/20x8/20
=3/10

Evaluate the 6 trigonometric functions of theta for 540 degrees

Answers

540 degrees is equivalent to 180 degrees. Cotangent and cosecant are invalid, sine, secant, tangent are all 0 and cosine is -1.

One of the angles formed by two intersecting lines is 30 degrees. What are the measures of the other three angles? please help im stuck on this one :(

Answers

Answer:

30, 150, and 150

Step-by-step explanation:

If you have two intersecting lines, there are going to be four angles that will all sum 360 degrees. The opposite angles will be identical. So, if you have one of the angles and it is 30 degrees, the opposite angle will be of 30 degrees as well. That adds 60 degrees, meaning that the remaining two angles will sum 300 degrees, and as they will also be identical, each will be of 150 degrees.

If a train travels m miles in h hours and 45 minutes, what is the average speed in miles per hour ?a)  m / (h + 3/4 ), b) m / 7h, c) m ( h + 3/4 ), d) ( m + 45 ) / n, e) h / ( m + 45 )

Answers

Speed = (distance covered) / (time to cover the distance).

Time = 'h' hours and 45 minutes.
45 minutes is 3/4 of an hour. (or 0.75 hour)
Total time is (h + 0.75) hours.

Speed = 'm' / (h + 0.75)

That's choice-'a'.
s=m \ miles\n t=h \ hours \ 45 \ min=h+0.75 \ hours\n v=(s)/(t)\n v=(m)/(h+0.75) =(m)/(h+(3)/(4)) \Rightarrow A

Anybody please help me :( on my last question

Answers

Answer:

B

Step-by-step explanation:

Write an equation of a line that passes through the given point and has slope m
(-4,3) m=2

Answers

y - y₁ = m(x - x₁)
y - 3 = 2(x - (-4))
y - 3 = 2(x + 4)
y - 3 = 2x + 8
  + 3         + 3
     y = 2x + 11
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