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Alex787 [66]
3 years ago
7

What angle is an x-intercept for the function y=cos (1/2x)

Mathematics
1 answer:
Nastasia [14]3 years ago
8 0

This it goes up by pi


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3x−12≥15<br><br> 2x−5≤9<br><br> 5x+8≤53<br><br> 3x−5≥16
zalisa [80]

Answer:

Step-by-step explanation:

A) 3x−12≥15

3x ≥ 15 + 12

3x ≥ 27

or x≥ 9

B) 2x−5≤9

2x ≤ 9 +5

2x ≤ 14

or x ≤ 7

C) 5x+8≤53

5x ≤ 53 -8

5x ≤ 45

or x ≤ 9

D) 3x−5≥16

3x ≥ 16 + 5

3x ≥ 21

or x ≥ 7

Have a good day!

8 0
3 years ago
17. Which of the following is the correct formula for finding power in a DC circuit? A. P = I2R B. P = VR C. P = IR D. P = V2I
netineya [11]

Answer:

Choice A. P = I² · R where

  • P is the power in the DC circuit,
  • I is the current through the circuit, and
  • R is the total resistance of the circuit.

Step-by-step explanation:

Electrical power is the rate at which the electrical force does work. So what is electrical work? That's the work W that the electrical force do when it moves charges Q across a potential difference V:

W = V\cdot Q.

The power is the rate at which the electrical force do the work:

\displaystyle P = \frac{W}{t} = V \cdot \frac{Q}{t}.

On the other hand, current I is the charge through a cross-section of the circuit in unit time. By the definition of current:

\displaystyle\frac{Q}{t} = I.

\displaystyle P =V \cdot \frac{Q}{t} = V\cdot I.

Consider Ohm's Law:

V = I \cdot R.

Therefore

\displaystyle P = V\cdot I = (I \cdot R) \cdot I = I^{2}\cdot R.

6 0
4 years ago
Read 2 more answers
×-5y=-15<br> Complete the missing value in the solution to the equation<br> (-5,__)
Readme [11.4K]

Answer:

(-5  , 2 )

Step-by-step explanation:

hello :

×-5y=-15

5y = x+15

y = (1/5)x+3    for x= - 5    y = (1/5)(-5) +3  so :  y = 2

3 0
3 years ago
If the sin 30 degrees is 1/2 then the cos ____=____.
goldenfox [79]
  Try A) 60 degrees; 1/2. Your answer was incorrect because cos(60 degrees) is 1/2, cos(30 degrees) is square root 3 /2 not 1 or square root 2 /2
7 0
3 years ago
Read 2 more answers
Grace paid $54.40 for 8 outdoor pathway lights. Travis paid $40.25 for 5 of the same lights at a different store.who paid less p
makkiz [27]

Answer:  Travis paid $8.05 per light and grace paid $6.8 per light so its grace

Step-by-step explanation:

5 0
3 years ago
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