The temperature of a chemical reaction oscillates in the interval 44 °c to 50 °c. the temperature is at 47 °c at t = 0 and rises at the start of a four-minute cycle. which function represents the relationship between time, t, and temperature, t?

T= 47 + 3 * sin (t /2)

Step-by-step explanation:

To make oscillates function you need to use sin/cos function, based on if the function increase or decreases first. This function rises at the start so it uses sin function. The function will look like this .

T= sin (t 2)

The temperature starts at 47. Then the function changes into

T= 47 + sin (t 2)

The temperature peak at 50 and the lowest at 44. Basically it's 47 +/- 3. It also has a 4-minute cycle, so the frequency is 1/4. Then the final function will be:

T= 47 + 3 * sin (t 2 /4)

T= 47 + 3 * sin (t /2)

49%

step-by-step explanation:

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x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a