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dangina [55]
3 years ago
7

Evaluate (mn)(x) for x= -3

Mathematics
2 answers:
Aneli [31]3 years ago
7 0
M=-3 over nx squared
OLEGan [10]3 years ago
3 0

Answer:

the first one is 9

the second is 0

the third is 1

Step-by-step explanation:

just did it

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If tan theta = 12/5 and cos theta < 0, what is sin theta ?
Talja [164]
1 + tan ² Ф=sec²Ф
1+(12/5)²=sec²Ф
169/25=sec² Ф
sec Ф=⁺₋√(169/25)=⁺₋13/5

sec Ф=1/cos Ф ⇒cosФ=1/sec Ф
 cos Ф>0   ⇔  sec Ф>0  ⇔  sec Ф=+ 13/5

cos Ф=1/secФ
cos Ф=1 / 13/5=5/13

we can calculate the sin Ф, with this method.
sin²Ф + cos²Ф=1  ⇒ sin Ф=⁺₋√(1-cos² Ф)
sin Ф=⁺₋√[1-(5/13)²]=⁺₋12/13
like cos Ф>0 and tan Ф>0   ⇒ sin Ф>0 ⇒sin Ф=12/13

answer: d.12/13

other method
tan Ф=sin Ф / cos Ф
12/5=sin Ф / 5/13
sin Ф=(12/5)*(5/13)=12/13

answer: d.12/13

8 0
3 years ago
What are 3 ratios that are equivalent to 4/7 Help please
quester [9]

Answer:

8:14, 12:27, 40:70

Step-by-step explanation:

5 0
2 years ago
This is a parallelogram. Using it's properties, what is the measure of:<br> x = <br><br> y =
Serggg [28]

Answer:

x = 10

y = 13

Step-by-step explanation:

7 0
3 years ago
Willing to give brainliest! Practice question I dont understand the math.
aivan3 [116]

Answer:

Step-by-step explanation:

Part A:

The interquartile range is approximately 10

Part B:

The difference between the median values for each data set  is approximately 6

Part C:

i) More widely distributed and concentrated to the beginning of the month

The better measure of the center for the male dataset is the median

ii) The skewed distribution

The mean is the better measure of center for the dataset

Part D;

A possible reason for the outlier is by chance

4 0
3 years ago
Plz show work <br> 3(10-x)=21
Contact [7]

Answer:

x = 3

Step-by-step explanation:

3(10-x)=21

30-3x=21

-30      -30

-3x=-9

x=3

5 0
2 years ago
Read 2 more answers
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