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3 years ago

Plz help with these 2 as well thx

Mathematics

1 answer:

Paha777 [63]3 years ago

4 0

Answer:

the answer is:

16^2 = 7^2 + x^2

256 = 49 + x2

x^2 = 256 - 49

x^2 = 207

x = ✅207

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In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled a

Art [367]

Answer:

The answer is " $\bold{T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5}$ "

Step-by-step explanation:

Given value:

Temp-maximum= $18^{\circ}$

Temp. minimum = $3^{\circ}$

It is halfway between 10 am and 10 pm to 4 am.

The sinus and cosine roles could be used throughout the year to predict fluctuations in climate models. Its type of formula that can be used to model such information is:

$T = A \cos B(t-C) + D,$ where parameters are A, B , C, D, T is the ° C temperature and t is the time (1-24)

$A = amplitude = \frac{(T_{max} - T_{min})}{2}\\\\$

$= \frac{(3 - 18)}{2}\\\\= - \frac{15}{2}\\\\ = -7.5$

$B = \frac{2 \pi}{24}\\\\$

$= \frac{\pi}{12}$

$C = \text{ units translated to the right}= 4$

$D = y_{min} + amplitude = units \ translated \ up\\\\$

D = 7.5 + 3 = 10.5

Its trigonometric function equation that model temperature T hours after midnight in Johannesburg t.

$T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5$

6 0

4 years ago

Dionne can fold 175 packing boxes in 50 minutes. Elias can fold 120 packing boxes in 40 minutes. Who has the faster folding rate

lapo4ka [179]

Answer:

Dionne :)

Step-by-step explanation:

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3 years ago

The function y = 5x is graphed in the coordinate plane. Which point will not be on the line?

Mademuasel [1]

I think your answer is A. (0,5)
Hope this helps!! Have a great day!! :)))

6 0

4 years ago

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Find the diffrence between -2 and 7 on the number line

lozanna [386]

Answer:

9 units

Step-by-step explanation:

Calculate the absolute value of the difference, that is

| - 2 - 7 | = | - 9 | = 9 , or

| 7 - (- 2) | = | 9 | = 9

5 0

3 years ago

Can someone explain to me how to do this

Otrada [13]

Angles on a straight line add up to 180°, so:

x + 60 = 180

x = 180 - 60

x = 120°

3 0

4 years ago

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