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3 years ago

I don't understand how to solve this 9x^2 – 16 = 0

Mathematics

2 answers:

Ber [7]3 years ago

7 0

Answer:

You will be solving for X. x =4/9

Step-by-step explanation:

You start by adding 16 to both sides.

then you have 9x^2 = 16

take the square root of each side

so you are left with 9x=4

then you divide each side by 9 to find the value of x

in this case, x=4/9

kvasek [131]3 years ago

7 0

Answer:

(3x-4)(3x+4)

Step-by-step explanation:

a^ 2 − b^ 2 = ( a + b ) ( a − b )

9 x 2 − 16 = ( 3 x )^ 2 − ( 4 )^2

( 3 x )^2 − ( 4 )^2 = ( 3 x − 4 ) ( 3 x + 4 )

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Soloha48 [4]

1) a.30
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3 years ago

Benny the Barber (see Question 1) is considering the addition of a second chair. Customers would be selected for a haircut on a

Artyom0805 [142]

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Additionally, customers who must wait do not have to spend a long time waiting in the store because the maximum waiting time is 10 minutes (in the case that both customers arrive at the same time).

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3 0

3 years ago

Find the unknown side length, x. Write your answer in simplest radical form.

Anna [14]

Answer:

The length of he hypotenuse of the triangle is x = 65.

Step-by-step explanation:

Here, the base of the right triangle = 56

The perpendicular = 33

The hypotenuse of the triangle = x

Now, by PYTHAGORAS THEOREM: In a right angled triangle

$(Base)^{2} + (Perpendicular)^{2} = (Hypotenuse)^{2}$

or, here

$(56)^{2} + (33)^{2} = (x)^{2}$

or, $x^{2} = 3136 + 1089 \implies x = \sqrt{4225} \\x = 65$

Hence, the length of he hypotenuse of the triangle is 65.

3 0

3 years ago

In a circle abcd, ac=8 cm then find the measure of ob

Crazy boy [7]

18 because 8 plus 10 is 18 thanks u

3 0

3 years ago

amara earns $8 an hour at her job working 25 hours per week. If 22% of her paycheck goes to taxes, what is Tamara’s monthly cash

pantera1 [17]

Answer:

Answer is B. $624

Step-by-step explanation:

So first off, you multiply. Amara earns $8 every hour and she works 25 hours every week. There are 4 weeks in a month so we first multiply 25 × 4 and we get 100

Now we multiply 100 × $8 and you get $800

But then it says that 22% of her money goes to taxes. So what we have to do is reduce from that total gross pay ($800). So the first thing we do is change the 22% to a decimal by moving the invisible decimal point twice to the left and it leaves us with .22

Now, we multiply $800 × .22 and we get $176. Now, do not get confused! This $176 is not the final answer! That is just the amount of money we have to take away not the money it leaves us with.

So we take away now from our total: $800 - $176 = $624

And there's your answer! I hope this helps :)

3 0

3 years ago