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4 years ago

Brainliest to best answer!

2 answers:

8 0

Personally for proving questions especially trigo, i reckon u memorise all of the formulas, esp double angle and half angle.

also, for other types of proving qn like prove d = 1/2 in an a.p, u can always go back to your basics, which is U1 + d = U2.

but, i would say that as long as u practice a lot of questions u should be able to recognise how to prove the questions

zheka24 [161]4 years ago

7 0

Answer:

take your time and always ask for help when needed

Step-by-step explanation:

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The function g is defined by g(x)=ax−7, where a is a constant. Find a, if the graph of g passes through the point ( 1/3 ,−2).

Daniel [21]

Answer:

a = 15

Step-by-step explanation:

The graph of function g(x) is described by g(x)=ax−7, or y = ax−7.

y = g(x)=ax−7 passes through (1/3, -2). We can subst. -2 for y and 1/3 for x to determine the value of the coefficient a:

-2 = g(1/3) = a(1/3) - 7

Solve for a. First, add 7 to both sides: 5 = a(1/3).

Next, multiply both sides by 3: 15 = a, or a = 15.

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3 years ago

Help! if a store offers 3 for the price of

sergiy2304 [10]

Okay say one is 1 dollar so they're giving you 3 of them for 2 dollars. If you get 3 for 2 dollars it would be like getting one for free. Full price would be dollars so you would take 2/3 which is .6... so you would take that from 10 which Gould be 33%

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3 years ago

Find an equation for the graph below

RoseWind [281]

Answer:

y=4/5x-0.8

Step-by-step explanation:

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3 years ago

In need help in this

Lyrx [107]

Answer:

Vertex form is

$a(x - h) {}^{2} + k = y$

where (h,k) is the vertex

So our vertex form is

$a(x - 3) {}^{2} + 5 = y$

It passes through (6,0) so we have

$a(6 - 3) {}^{2} + 5 = 0$

Solve for a.

$a(3) {}^{2} + 5 = 0$

$a(9) = - 5$

$a = \frac{ - 5}{9}$

So our equation is

$- \frac{5}{9} (x - 3) {}^{2} + 5$

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3 years ago

Graph the line that represents this equation: 25 PTS

Softa [21]

Answer:

y=1/2x.

Step-by-step explanation:

First, you would like to distrubte the fraction to make it become: 1/2x+1 on the right side. Second you would like to put it in y=mx+b form. Isolate y to y=1/2x. Then, you can start on (0,0), the orgin and they go up 1 and over 2 right.

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3 years ago