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kykrilka [37]
3 years ago
14

If x divided by 9 = 1, how do you know what x is

Mathematics
2 answers:
padilas [110]3 years ago
6 0
X/9=1

Multiply both sides by 9. So x=9.
Vlada [557]3 years ago
3 0
Well we have \frac{x}{9} and if it =1 we already know that x = 9.

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vovangra [49]
I believe also 115 degrees bc they’re vertical angles
5 0
3 years ago
Read 2 more answers
Assuming the amount of money college students spend on text books each semester is symmetrical with a mean of 500 and a standard
TiliK225 [7]

16% percent of the students paid MORE than Jane.

The mean(μ) of money spent on textbooks is 500

The standard deviation(σ) of money spent on textbooks is 50

Money paid by Jane for her books is $550

We will use this formula,

Ζ=x-μ/σ

To find: the percentage of students paid MORE than Jane for the textbooks

P(X > 550)=?

Solution:

P(X > 550)=1-P(X≤550)

=1-P(Ζ≤\frac{550-500}{50} )

=1-P(Ζ≤ 1)

=1-0.8413

=0.1587

≈16%

Therefore, 16% percent (approx) of the students paid MORE than Jane.

Learn more about mean and standard deviation here brainly.com/question/4388715

#SPJ4

3 0
2 years ago
Multiply the equation 2x+2y=8 by 3. Does the equation have the same solution set?
stepan [7]

Multiply the equation:

2x+2y=8 \mapsto 6x+6y=24

The solution set is the same, because multiplying both sides of an equation by a non-zero number doesn't change the solution set. In fact, if you rewrite the equation as

2x+2y-8=0

Multiplying this by 3 (or whatever number, for all it matters) gives

3(2x+2y-8)=0

Now, a product is zero if and only if at least one of the factor is zero. So, either 3=0 or 2x+2y-8=0

Since the first is clearly impossible, the second one must be true, which is the original equation.

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3 years ago
2+2<br> will mark brainly est
dybincka [34]

Answer:

4

Step-by-step explanation:

6 0
3 years ago
How do you solve the equation by factoring or square roots<br> Ex: x^2-4x=0
Lubov Fominskaja [6]
x^2-4x=0\\&#10;x(x-4)=0\\&#10;x=0 \vee x=4

-------------------------------------------------

3x^2=48\\&#10;x^2=16\\&#10;x=-4 \vee x=4\\\\&#10;\hbox{or}\\\\&#10;3x^2-48=0\\&#10;3(x^2-16)=0\\&#10;3(x-4)(x+4)=0\\&#10;x=4 \vee x=-4
3 0
3 years ago
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