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xz_007 [3.2K]
2 years ago
15

Round 1.8090 to the nearset hundreths

Mathematics
2 answers:
Allisa [31]2 years ago
8 0

Answer:

1.81

Step-by-step explanation:

nikklg [1K]2 years ago
6 0

Answer:

1.81

Step-by-step explanation:

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Solve for a 2.5+5a=3a+10.5
Oksi-84 [34.3K]

Answer:

a = 4

Step-by-step explanation:


4 0
3 years ago
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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
HELP ASAP PLEASEEEEEE
lord [1]

Answer:

The answer is 90 4/10

Step-by-step explanation:

if u divide 4 from 10 u will get 0.4

3 0
3 years ago
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Lily recieves 30 messages on her cell phone.Of those messages,1 over 5 are picture messages and 7 over 8 of the remainder are te
lesantik [10]
So we are starting out with 30 messages.

If 1/5 of the messages Lily receives are picture messages, then take 1/5 x 30 to find out how many that is.

1/5 x 30 = 30/5 = 6. So Lily receives 6 picture messages. 

If 7/8 of the remaining messages are texts, then we need to find the number of remaining messages. If 6 are pictures and she receives 30 overall, then 30 - 6 = 24, the remaining number of messages. Since we know 7/8 of <em>this </em>number is the number of texts Lily received, let's do some more multiplication:

7/8 x 24 = (7 x 24)/8 = 168/8 = 21.

So Lily received 21 text messages, 6 picture messages, and 3 of something else!
3 0
3 years ago
In a library where the ratio of men to women is 1 to 1, of the total members are men.
masha68 [24]
The men are in equal amount to women if the ratio is 1:1
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