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Pavel [41]
3 years ago
7

How do I model and solve algebriac expressions?

Mathematics
1 answer:
AveGali [126]3 years ago
6 0
1) Identify what your variables and constants are.

2) Examine the relationship between them (i.e. positive or negative).

3) The variables always go with "x", for example: Timmy works in an electronic store and makes $60 every day (constant) and additionally, he makes $10 for every computer he sells (variable). Notice the word "every", this hints at what your variable is. So, in this example your equation would look like this: y = 10x + 60

Hope that helps!
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The number calls 911 rose from 210000 in 2001 to 400000 in 2002
r-ruslan [8.4K]

i'm guessing this is asking what percentage it went up by? if so it went up by 190.47 percent.  ***400,000 / 210,000 = 1.9047619***

7 0
3 years ago
Use the side spittler theorem to find x given that PQ |BC
Musya8 [376]

18/12 = x/8

12x = 8 * 18

x = 8 * 1.5

x = 12

Answer: C. 12

3 0
3 years ago
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A student writes an incorrect step while checking if the sum of the measures of the two remote interior angles of triangle ABC b
iragen [17]

The student made the mistake in Step 2.

It should be m∠o + m∠p = 180 (Supplementary angles)

If this is corrected, then, since m∠m + m∠n + m∠o = 180 from Step 1,

we have,

m∠m + m∠n + m∠o = m∠o + m∠p which is Step 3.

Cancelling m∠o both sides, we get,

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7 0
3 years ago
Geometry help! Please prove the following is a square with full explanation, I'm really lost.
Hoochie [10]

We have to show that this is a square, meaning all the sides are perpendicular and the same distance.  

A(3,4), B(2,-2), C(-4,-1), D(-3,5)

For each side we calculate the squared distance and the slope.  We don't have to bother to take the square root.  We'll subtract the points first because that difference, called the direction vector, goes into both the calculation of the slope and of the distance.

AB=B-A=(2 - 3, -2 - 4) = (-1, -6).   slope=-6/-1=6  AB²=(-1)²+(-6)²=37

BC=C-B=(-6, 1).  slope=1/-6=-1/6.   BC²=(-6)²+1²

CD=D-C=(1, 6).   slope=6/1=6    CD²=1²+6²=37

DA=A-D=(6,-1)   slope=-1/6     DA²=37

We see the negative reciprocal slopes, alternating between 6 and -1/6, indicating perpendicular sides.  We see they all have squared distance 37.  Equal perpendicular sides proves its a square.

If we do these problems enough we learn:  There's no point taking the square root.  In fact, there's really no point computing the slopes and the squared distances; we can see it's a square from the pattern of the direction vectors of the sides:  (-1, -6) (-6, 1) (1, 6) (6,-1)

5 0
3 years ago
Please help me solve and explain
Anna11 [10]
I would say go with with B

5 0
3 years ago
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