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kiruha [24]
3 years ago
7

How do you solve the equation 3x = 9 by multiplying 3 to both sides

Mathematics
2 answers:
Nonamiya [84]3 years ago
8 0
Whenever you're stuck with an equation like 3x = 9, you divide both sides by 3 and 3 is your answer. x = 3.
notka56 [123]3 years ago
5 0
Whenever you see <em>x </em> next to a 3, and it says that it equals 9, you know that 3•3=9.
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Write the equation of the parabola in vertex form.
stellarik [79]

well, looking at the picture of this vertically opening parabola, it has a vertex at 0,0 and it passes through 2,1 hmm ok

~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ y = a(x-0)^2+0\qquad \stackrel{\textit{we also know that}}{x=2\qquad y = 1}\qquad \implies 1=a(2-0)^2+0 \\\\\\ 1=4a\implies \cfrac{1}{4}=a~\hspace{10em} \boxed{y=\cfrac{1}{4}x^2}

8 0
2 years ago
Y2-x3 when x=2,y=4 x1+x3-y2 when x=3 y=5 x4 divide x3 x=6 please help am bad at this
Katen [24]

Answer:

8 , 5 , 5.785

Step-by-step explanation:

y^2 - x^3

first just plug in the numbers and you get

(4)^2 - (2)^3

Multiply

16-8 and this equals 8

x1 + x^3 - y^2

same pattern plug in the numbers

(3)^(1) + (3)^3 - (5)^2

multiply

3 + 27 - 25

P

E

M

D

Addition

Subtraction so do 3+27 first and you get

30 - 25 = 5

x^4 / x^3 plug it in

(6)^4 / (6)^3

multiply

1269  / 216  

divide this and you get

5.875

8 0
2 years ago
Simplify [2 (cos 210 + i sin 210)]^3
Dennis_Churaev [7]
After simplifying the real and imaginary parts you'd get -8i

3 0
3 years ago
Given that v = (5,-4, 4) and w = (9-2,7) , evaluate v • w.
yuradex [85]

Answer:

a

Step-by-step explanation:

Given

u = (x₁, y₁, z₁ ) and v = (x₂, y₂, z₂ ) then the dot product is

u • v = (x₁ x₂ ) + (y₁ y₂ ) + (z₁ z₂ )

Then

v • w

= (5 × 9) + (- 4 × - 2) + (4 × 7)

= 45 + 8 + 28

= 81 → a

4 0
2 years ago
Which equation is represented by the graph<br> y={x} + 1<br> y={x+1]<br> y={x]-1<br> y={x-1]
OverLord2011 [107]
The third one is correct
6 0
3 years ago
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