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qwelly [4]
3 years ago
13

|x|-8=5 help me pls some one help me

Mathematics
2 answers:
MariettaO [177]3 years ago
6 0
The answer is X=13 because 13-8=5
Liono4ka [1.6K]3 years ago
5 0

Answer:

x = -13

Step-by-step explanation:

1.

|x| = 5 + 8

2.

|x| = 13

3.

x  = -13

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Plz help me well mark brainliest!!
gregori [183]

Answer:

x=-52

1/3x-2/3=-18

multiply both sides by 3

x-2=-54

x=-54+2

x=-52

4 0
2 years ago
Read 2 more answers
the surface area of earth is about 196.9 million square miles. The land area is about 57.5 million square miles, and the rest is
kow [346]

Answer: 29.2%

Step-by-step explanation:

The total surface area is 196.9 million square miles and out of this, land occupies 57.5 million square miles.

The probability that a meteorite would hit land is the percentage of and out of the entire planet area:

= Land area/ Total earth surface area

= 57.5/ 196.9

= 29.2%

8 0
3 years ago
In a sample of eight whitefish caught in Yellowknife Bay, the mean arsenic concentration in the liver was 0.32 mg/kg, with a sta
Advocard [28]

Answer:

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 8 - 1 = 7

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 7 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.95}{2} = 0.975. So we have T = 2.3246

The margin of error is:

M = T\frac{s}{\sqrt{n}} = 2.3646\frac{0.06}{\sqrt{8}} = 0.0502

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 0.32 - 0.0502 = 0.2698 mg/kg

The upper end of the interval is the sample mean added to M. So it is 0.32 + 0.0502 = 0.3702 mg/kg

The 95% confidence interval for the concentration in whitefish found in Yellowknife Bay is (0.2698 mg/kg, 0.3702 mg/kg).

8 0
3 years ago
2x + 5(y - 1) when x=8 and y=5
Travka [436]

Answer:

16+24=40

Step-by-step explanation: 2x+5(y-1) when x=8 and y=5. put x where it belongs, by the 2 and do the same with y, by the -1. and then slove. 2*8= 16 , 5*5= 25-1, then add 16 and 24 together and get 40.

5 0
3 years ago
Can you plzzzzzzzz help meeeee it is urgent for the 1st and second question
kherson [118]

Answer:

n<-9

p (put the symbol already there here) -7

Step-by-step explanation:

Hope this helps!!

7 0
2 years ago
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