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3 years ago

System of equations -8x + 4y = 24 -7x + 7y = 28 X= _ Y=_

Mathematics

2 answers:

lilavasa [31]3 years ago

8 0

Answer:

You would end up with X= -2, y= 2

And they would intersect at point (-2,2) on a graph :)

andreev551 [17]3 years ago

7 0

Answer:

x= -2

y= 2

Step-by-step explanation:

Khan ^w^

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2) Unit rate is the price, or quantity, or distance of many items<br> O True<br> O<br> False

Zielflug [23.3K]

Answer:

True

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

S2.256 T2.22 U2.099 V2.71

77julia77 [94]

Answer:

D) V, S, T, U

Step-by-step explanation:

Note that the question is asking for the order from greatest to least. In the case of decimals, I find it easier to compare by placing them in a line going down and filling in zeros where needed to make them the same place values:

2.256 - S

2.220 - T

2.099 - U

2.710 - V

Since they all have the same first digit, I will look at the next digit following the decimal. '7' is the greatest, then '25', then '22' then '09':

D) V, S, T, U

6 0

3 years ago

Answer asap i got school in one hour and forgot to do this (im putting all my points for this)

tankabanditka [31]

Answer:

I belive the answer for the first box is 9.67

I belive the answer for the second box is 71.

I hope I helped

7 0

3 years ago

Examination of court records in a particular state shows that the mean sentence length for first-offense drug dealers is 26 mont

Zigmanuir [339]

Answer and explanation:

Given : Examination of court records in a particular state shows that the mean sentence length for first-offense drug dealers is 26 months with a standard deviation of 2 months. The records show that the sentence lengths are normally distributed.

i.e. Mean $\mu=26$ , Standard deviation $\sigma=2$

Using Z-score formula,

$Z=\frac{\bar{x}-\mu}{\sigma}$

1) What is the Z score for a 23 month sentence length? What is the probability of getting a sentence below that?

The Z score value for a $\bar{x}=23$ is given by,

$Z=\frac{23-26}{2}$

$Z=\frac{-3}{2}$

$Z=-1.5$

The probability of getting a sentence below that is $P(X$

i.e. $P(X$

$P(X$

2) A defense attorney is concerned that his client's sentence was unusually harsh at 30 months. What percent of sentences are 30 months or longer? Calculate the Z score and report the area.

The Z score value for a $\bar{x}=30$ is given by,