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tensa zangetsu [6.8K]
3 years ago
15

A- 1/3 =2/3 what would a be

Mathematics
2 answers:
lubasha [3.4K]3 years ago
8 0
Add 1/3 on both sides
a= 1
Maslowich3 years ago
5 0
Add 1/3 to both sides.

a=1
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Find the probability of selecting a day that starts with the letter T
Rasek [7]

Answer:

Number of days starting from T are:-

Tuesday

Thursday

So, number = 2

Number of days in a week = 7

So, probability = 2/7

Hope it helps...!!!

Step-by-step explanation:

5 0
2 years ago
find the angle between the vectors. (first find the exact expression and then approximate to the nearest degree. ) a=[1,2,-2]. B
SashulF [63]

Answer:

\theta = cos^{-1} (\frac{10}{\sqrt{9} \sqrt{25}})=cos^{-1} (\frac{10}{15}) = cos^{-1} (\frac{2}{3}) = 48.190

Since the angle between the two vectors is not 180 or 0 degrees we can conclude that are not parallel

And the anfle is approximately \theta \approx 48

Step-by-step explanation:

For this case first we need to calculate the dot product of the vectors, and after this if the dot product is not equal to 0 we can calculate the angle between the two vectors in order to see if there are parallel or not.

a=[1,2,-2], b=[4,0,-3,]

The dot product on this case is:

a b= (1)*(4) + (2)*(0)+ (-2)*(-3)=10

Since the dot product is not equal to zero then the two vectors are not orthogonal.

Now we can calculate the magnitude of each vector like this:

|a|= \sqrt{(1)^2 +(2)^2 +(-2)^2}=\sqrt{9} =3

|b| =\sqrt{(4)^2 +(0)^2 +(-3)^2}=\sqrt{25}= 5

And finally we can calculate the angle between the vectors like this:

cos \theta = \frac{ab}{|a| |b|}

And the angle is given by:

\theta = cos^{-1} (\frac{ab}{|a| |b|})

If we replace we got:

\theta = cos^{-1} (\frac{10}{\sqrt{9} \sqrt{25}})=cos^{-1} (\frac{10}{15}) = cos^{-1} (\frac{2}{3}) = 48.190

Since the angle between the two vectors is not 180 or 0 degrees we can conclude that are not parallel

And the anfle is approximately \theta \approx 48

3 0
2 years ago
Draw Conclusions The decimal 0.3 represents 1. What type of number best describes 0.9, which is 3 0.3? Explain.
liraira [26]
If 0.3 = 1 then 0.9 = 3 because 0.3+0.3+0.3=the 3.
7 0
3 years ago
Simplify the expression -4x2(3x − 7).
FromTheMoon [43]

Answer:

-12x^3 + 28x^2

4 0
3 years ago
Read 2 more answers
NEED HELP ( due tomorrow )
mariarad [96]
What is it you need help with?
6 0
3 years ago
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