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3 years ago

Choose all the equations that are true if x=9

Mathematics

1 answer:

Mrrafil [7]3 years ago

8 0

Answer:

A, C, E

Step-by-step explanation:

I don't really know how to explain it but you can kinda substitute 9 for the variable to confirm if you want.

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B= 2 x 9 + b2 = 34 find b<br><br><br> Please, help, me. Im begging you.

Vlada [557]

Answer:

B=34

Step-by-step explanation:

I hope this is correct pls give me brainly

7 0

3 years ago

Read 2 more answers

What is the distance between the points (10, 2) and (14, 5)?

Lana71 [14]

5 is the distance between the points which is given

8 0

3 years ago

In one day, the stock price for Zell Computers rose from $50 to $57 per share. By what percent did this stock price rise?

netineya [11]

The stock price rose by 14%

Percentage is the fraction of a sum expressed as a number out of hundred.

Percentage price increase = (change in price / initial price) x 100

In order to determine the answer, the following information is needed :

Change in stock price:

New price - Initial price

$57 - $50 = $7

Initial price = $50

Percentage increase in stock price : ($7 / $50) x 100 = 14%

In order to determine the percentage increase in the stock price, express the increase in price as a fraction of the initial price and multiply by 100

To learn more about percentages, please check: brainly.com/question/92258?referrer=searchResults

4 0

3 years ago

Which expression is equivalent to 4÷147

mote1985 [20]

Answer:

what are the choices???

Step-by-step explanation:

7 0

3 years ago

Please help I will give out brainliest

Nitella [24]

Answer:

i)x=0,x=1

ii)

$\frac{2}3} + \frac{\sqrt{40} }{6} \\\frac{2}3}-\frac{\sqrt{40} }{6}$

Step-by-step explanation:

so I did not use the graphs actually.

for the answer to question i), i wrote out the equation as given:

3x^2-3x+2=2

then, i subtracted the two from the right side of the equation to make the equation set equal to 0, and I got:

3x^2-3x+2-2=+2-2, which becomes 3x^2-3x=0

then, I used the quadratic method of taking out the greatest common factor, which in this case is 3x, and the equation becomes:

3x(x-1)=0

finally, for this equation, I set 3x=0 and x-1 =0 to get the solutions to this equation, as shown below

3x=0(divide both sides by 3 to get)x=0

x-1=0(add 1 to both sides to get)x=1

now for the second equation, I had no other choice but to use the quadratic formula to find the solutions.

so I set up the quadratic formula as shown:

$\frac{-(-4)+ or -\sqrt{(9-4)^2)-4(-2)(3)} }{2(3)}$

from there the equation gets simplified down to:

$\frac{4+ or -\sqrt{16-4(-6)} }{6}$

simplifying the formula even further gives us:

$\frac{4+ or -\sqrt{40} }{6}$

if we simplify the equation one last time, we get:

$\frac{2}{3} + or -\frac{\sqrt{40} }{6}$

therefore, the solutions to this equation are:

$\frac{2}{3} +\frac{\sqrt{40} }{6}\\ \frac{2}{3} - \frac{\sqrt{40} }{6}$

8 0

3 years ago