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lapo4ka [179]
3 years ago
6

Plzzz help need it right nowww.....

Mathematics
1 answer:
Hunter-Best [27]3 years ago
5 0
2x-5= - 20 


2x=-20+5
 
          Add  \ 5 \ to \ both \ sides
 

2x=-15

 
 

x=- \dfrac{15}{2}       Divide \ both \ sides \ by \ 2
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12) u= a + k - b, for a<br><br> Helppppp
KATRIN_1 [288]

Answer:

a = u - k + b

Step-by-step explanation:

u = a + k - b

u - k + b = a+ k - b - k + b

u - k + b =  a

3 0
3 years ago
Please Help.............
wolverine [178]

Step-by-step explanation:

there is a right ∆ and a sector

area of right ∆ = .5×6×5 = 15 cm^2

area of sector = angle/360 * π * r^2

= 1/4 * π * 25 = 19.63 cm^2

area of the shape = 34.63 cm^2

5 0
2 years ago
2 – (–8) + (–3) =<br><br>A) 14<br><br><br>B) 7<br><br><br>C) 12<br><br><br>D) 1
aleksandr82 [10.1K]

Step-by-step explanation:

2 - ( - 8) + ( - 3) \\ 2 + 8 - 3 \\ 10 - 3 \\ 7

3 0
2 years ago
Read 2 more answers
If 3/5 of the girls in class have long brown hair and 1/3 of them have green eyes how many girls in class have long brown hair a
goblinko [34]
I'm guessing 1/3 of 3/5 is what you mean

1/3 of 3/5=1/3 times 3/5=3/15=1/5

1/5 of class has long brown hair and green eyes
3 0
2 years ago
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Find the magnitude of the vector v=&lt;-1,3&gt;.<br>√10<br>10<br>8<br>2√2​
Dmitrij [34]

Answer:

√10

Step-by-step explanation:

Magnitude of a vector:

The magnitude of a vector v = <a,b> is given by:

|v| = \sqrt{a^2 + b^2}

v=<-1,3>

Then:

|v| = \sqrt{(-1)^2 + 3^2} = \sqrt{1 + 9} = \sqrt{10}

\sqrt{10} is the magnitude of the vector.

8 0
2 years ago
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