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Sonbull [250]
3 years ago
13

Help!!!!

Mathematics
1 answer:
Elodia [21]3 years ago
7 0

Answer:

110 students in the class

Step-by-step explanation:  If this is helpful and correct please mark as brainliest!

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Express 0.0003 in Scientific notation by counting decimal places
Genrish500 [490]

Answer:

When we write numbers in scientific notation, we must put the first non-zero digit ahead of the decimal.  In this case, the decimal would be behind the 3. Because we moved the decimal places four times to the right, our exponent will be 4. Thus,

3.00 x 10⁻⁴

7 0
3 years ago
I need help cause I'm really bad at math. ¯\_(ツ)_/¯
FromTheMoon [43]

Answer:

ill explain better

Step-by-step explanation:

use distrubrity property and you get 6x + 6x -18y+6+(-9) then you add 18 because you have to get the y way so you do the opposite of subtracting which is adding so when you add the 18 to it self you then add the 18 to one of the 6x the you get 24x+6x+-4 which u add 6 to -9 the to combine like terms and get 30x+-4

4 0
3 years ago
6 h ​ −1=3 helpppppppppppppppppppppppppppppppp
liberstina [14]

Answer:

h=2/3

Step-by-step explanation:

6h-1=3

add one to each side

6h=4

divide by 6

h=4/6

Simplify (divide by 2)

h=2/3

6 0
3 years ago
Given vectors u = ⟨2, –3⟩ and v = ⟨1, –1⟩, what is the measure of the angle between the vectors?
oksano4ka [1.4K]

Answer:

The measure of the angle between the vectors = Ф = 11.30°

Step-by-step explanation:

Given

  • u = ⟨2, –3⟩
  • v = ⟨1, –1⟩

\mathrm{Computing\:the\:angle\:between\:the\:vectors}:\quad \cos \left(\theta \right)\:=\frac{\vec{a\:}\cdot \vec{b\:}}{\left|\vec{a\:}\right|\cdot \left|\vec{b\:}\right|}

Next, find the lengths of the vectors:

\mathrm{Computing\:the\:Euclidean\:Length\:of\:a\:vector}:\quad \left|\left(x_1\:,\:\:\ldots \:,\:\:x_n\right)\right|=\sqrt{\sum _{i=1}^n\left|x_i\right|^2}

u = ⟨2, –3⟩

\:\:\left|u\right|\:=\sqrt{2^2+\left(-3\right)^2}

     =\sqrt{13}

u = ⟨2, –3⟩

|v|=\sqrt{1^2+\left(-1\right)^2}

    =\sqrt{2}

Finally, the angle is given by:

\mathrm{Computing\:the\:angle\:between\:the\:vectors}:\quad \cos \left(\theta \right)\:=\frac{\vec{a\:}\cdot \vec{b\:}}{\left|\vec{a\:}\right|\cdot \left|\vec{b\:}\right|}

cos (Ф) = 5/√26

Ф = arc cos (cos (Ф)) = arc cos (5 √26) / (26)

Ф = 11.30°

Thus, the measure of the angle between the vectors = Ф = 11.30°

6 0
3 years ago
Read 2 more answers
Can someone please Solve this equation for me 2x – 3 = 9
yarga [219]

Answer:

x=6

Step-by-step explanation:

Hello There!

Our whole objective is to isolate the variable (x) by using inverse operations

2x-3=9

to get rid of the -3 we add 3

Remember whatever we do to one side we have to do to the other side so we add 3 to each side

-3+3 cancels out

9+3=12

now we have

12=2x

now to get rid of the 2 we divide by 2

so we divide each side by 2

2x/2=x

12/2=6

we´re left with

x=6

4 0
3 years ago
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