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Amiraneli [1.4K]
3 years ago
5

NEED THIS ASAP BEACUSE THIS IS A MATH QUIZ

Mathematics
2 answers:
yulyashka [42]3 years ago
4 0

Answer:

3

Step-by-step explanation:

15-2x=9

or,-2x=9-15

or, x=-6/-2

x=3

Varvara68 [4.7K]3 years ago
3 0

Answer:

Bob has 15 books and Joey has 2x books. If you subrtact Joeys books from bobs how many will there be. there will be 9. becase if you take 15 and cancle it out then you do that to the other side then there is -6. and -2x= -6 then would equal 3.

Step-by-step explanation:

15 - 2x = 9

-15.        -15

-2x= -6

/-2.   /-2

x=3

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Find x <br> Plz help me !!!
mel-nik [20]

Answer:

\Huge\boxed{x=33.2}

Step-by-step explanation:

Hello there!

We can solve for x using law of sines

As we can see in the image a side length divided by sin ( its opposite angle) = a different side length divided by sin ( its opposite angle)

So we can use this equation to solve for x

\frac{21}{sin(35)} =\frac{x}{sin(65)}

Our objective is to isolate the variable using inverse operations so to get rid of sin (65) we multiply each side by sin (65)

\frac{x}{sin(65)} sin(65)=x\\\\\frac{21}{sin(35)} sin(65)=\frac{21sin(65)}{sin(35)}

we're left with

x=\frac{21sin(65)}{sin(35)}\\x=33.18208755

assuming we have to round the answer would be 33.18 or 33.2

7 0
3 years ago
two parallel lines are graphed on a coordinate plane.how many of the lines could represent proportional relationship?Explain.
soldi70 [24.7K]

It's not necessary that either one represents a proportional
relationship.  But if either one does, then the other one doesn't. 
They can't both represent such a relationship.

The graph of a proportional relationship must go through
the origin.  If one of a pair of parallel lines goes through
the origin, then the other one doesn't. (If two parallel lines
both went through the origin, then they would both be the
same line.)

7 0
3 years ago
Read 2 more answers
What is the equation of a line that is perpendicular to -1 +3y=9 and passes through the point (-3, 2)?​
kati45 [8]

Answer:

y-2 = 3/10(x+3)

Step-by-step explanation:

3y = 10

y = 10/3

looking for perpendicular so slope = 3/10

using the given point

y-2 = 3/10(x+3)

6 0
2 years ago
Read 2 more answers
Please help <br> there is a attachment to this i think.
ser-zykov [4K]

Answer:

squrt6(84)

Step-by-step explanation:

By the law:

squrtn(a^m) = a^(m/n)

Best regards

5 0
3 years ago
In polar coordinates, the axis determined by theta=0 is called ?
melisa1 [442]

In polar coordinates, the axis determined by theta=0 is called the positive x-axis or horizontal axis.

To add, in mathematics, the polar coordinate<span> system is a two-dimensional </span>coordinate<span> <span>system in which each point on a plane is determined by a distance from a reference point and an angle from a reference direction.</span></span>

4 0
3 years ago
Read 2 more answers
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