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Kipish [7]
3 years ago
13

Four students were discussing how to find the unit rate for a proportional relationship.Which method is valid?

Mathematics
1 answer:
jenyasd209 [6]3 years ago
6 0

Answer:use a calculator

Step-by-step explanation:

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Answer and explanation please?
nignag [31]
The answer would be A. m= -3/5 and b=-4/5
"m= -5-1 divided by 7--3
or, -6/10
or, -3/5.

to find the (B)

<span><span>(-3,1). y=mx+b or 1=-3/5 × -3+b, or solving for b: b=1-(-3/5)(-3). b=-4/5.</span><span>(7,-5). y=mx+b or -5=-3/5 × 7+b, or solving for b: b=-5-(-3/5)(7). b=-4/5.</span></span>See! In both cases we got the same value for b. And this completes our problem.

<span><span>The equation of the line that passes through the points(-3,1) and (7,-5)is</span><span>y=-3/5x-4/5"</span>
Source: webmath</span>
5 0
3 years ago
How do you factor this so you can find the roots or what x equals?
Marina86 [1]
Use the rational roots test.  The possible roots are: plus/minus 6,3,2,1

Use synthetic division and you will see that 3 is a root:

3 | 1 -3 -3 11 -6
   |    3  0  -9  6
   ____________
     1 0  -3   2 0

Use rational root again, to see that possible roots are: plus/minus 2,1

Try 2:

2 | 1 0 -3 -2
   |    2  4  2       
   _____________
     1  2  1  0

The above is x^2+2x+1 which is a perfect square: (x+1)^2

So we have the final factorization: (x-3)(x-2)(x+1)^2

So the roots are: 3, 2, -1
Where -1 is a double zero.

6 0
2 years ago
Help?? IJODFZUSDJIOKPXFIGLDROEPKFIJNHCLDFISEKPORQJLNH.KL
IrinaK [193]

Answer:

>

Step-by-step explanation:

.386 is greater than .368

4 0
2 years ago
Read 2 more answers
Hurry !!!!!
lorasvet [3.4K]

Answer:

12.895

Step-by-step explanation:

Standard deviation is a statistic that measures the dispersion of a sample. The sample standard deviation measures the spread of data distribution of the sample. It is usually used to estimate the population standard deviation.

6 0
3 years ago
Choose all of the conversions that are true. A. 24 ft = 2 in. B. 2 mi = 10,560 ft C. 12 mi = 2,640 ft D. 0.5 mi = 880 yd E. 0.5
Volgvan

Answer:

B

C

Step-by-step explanation:

7 0
3 years ago
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