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3 years ago

-3 1/2 • 5 5/6 please help me out! (If you didn’t know the dot means multiply!)

Mathematics

1 answer:

nadya68 [22]3 years ago

7 0

Answer:

20.42 is your answer

Step-by-step explanation:

First change all mixed fraction into improper fractions

-3 1/2 = -7/2

5 5/6 = 35/6

Multiply across:

-7/2 x 35/6 = 245/12 = ~20.42 (rounded)

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Y = (2/3)x - 1<br> y = -x + 4

Vinil7 [7]

Are these two separate questions?

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3 years ago

The heat index I is a measure of how hot it feels when the relative humidity is H (as a percentage) and the actual air temperatu

PSYCHO15rus [73]

Answer:

a) $I(95,50) = 73.19$ degrees

b) $I_{T}(95,50) = -7.73$

Step-by-step explanation:

An approximate formula for the heat index that is valid for (T ,H) near (90, 40) is:

$I(T,H) = 45.33 + 0.6845T + 5.758H - 0.00365T^{2} - 0.1565TH + 0.001HT^{2}$

a) Calculate I at (T ,H) = (95, 50).

$I(95,50) = 45.33 + 0.6845*(95) + 5.758*(50) - 0.00365*(95)^{2} - 0.1565*95*50 + 0.001*50*95^{2} = 73.19$ degrees

(b) Which partial derivative tells us the increase in I per degree increase in T when (T ,H) = (95, 50)? Calculate this partial derivative.

This is the partial derivative of I in function of T, that is $I_{T}(T,H)$ . So

$I(T,H) = 45.33 + 0.6845T + 5.758H - 0.00365T^{2} - 0.1565TH + 0.001HT^{2}$

$I_{T}(T,H) = 0.6845 - 2*0.00365T - 0.1565H + 2*0.001H$

$I_{T}(95,50) = 0.6845 - 2*0.00365*(95) - 0.1565*(50) + 2*0.001(50) = -7.73$

8 0

3 years ago

Could anyone help me? this is hard i dont understand

emmainna [20.7K]

Answer:

can you please give me an example?

i will help you but give me your teacher's example

Step-by-step explanation:

let me know if it's done

3 0

3 years ago

Hello whats is the size of the angle

Gennadij [26K]

Answer:

x = 65°

Step-by-step explanation:

The interior angle of the triangle and 140° are adjacent and supplementary, thus

interior angle = 180° - 140° = 40°

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

105° is an exterior angle of the triangle, thus

x + 40° = 105° ( subtract 40° from both sides )

x = 65°

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3 years ago

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makkiz [27]

Answer:

300

Step-by-step explanation:

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3 years ago

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