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den301095 [7]
3 years ago
13

PLEASE HELP ASAP

Mathematics
1 answer:
Alja [10]3 years ago
5 0

Answer: x = -1; y = -1

y = 3x + 2

y = -2x - 3

⇔ y = 3x + 2

   3x + 2 = -2x - 3

⇔ y = 3x + 2

    5x = -5

⇔ y = 3x + 2

    x = -1

⇔ y = -1

    x = -1

Step-by-step explanation:

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You are conducting a study to test whether there is a difference in the mean number of alcoholic drinks consumed per evening bet
salantis [7]

The value of test statistic is 5.45

Data;

  • n1 = 25
  • n2 = 30
  • x1 = 6.2
  • x2 = 3.8
  • s1 = 2
  • s2 = 1

<h3>Test Statistic</h3>

The formula to calculate the test statistic is given as

t = \frac{x_1 - x_2}{\sqrt{\frac{s_1^2}{n_1}+ \frac{s_2^2}{n_2}  } } \\

Let's substitute the values and solve for t

t = \frac{x_1 - x_2}{\sqrt{\frac{s_1^2}{n_1}+ \frac{s_2^2}{n_2}  } } \\t = \frac{6.2 - 3.8}{\sqrt{\frac{2^2}{25} + \frac{1^2}{30}  } } \\t = \frac{2.4}{0.44} = 5.45

The value of test statistic is 5.45

Learn more on test statistic here;

brainly.com/question/15980493

5 0
3 years ago
The surface of each crystal has an area of
Umnica [9.8K]

Answer:

10,000,000,000 × 10^-1, 1/1,000,000,000^-1

Step-by-step explanation:

Im not sure what you are asking

7 0
4 years ago
Please HELP ME pls I WILL BRAINLIST U please AND MARK U 5 star THIS IS URGENT IF U ARE SOMEONE WHO IS GOOD WITH MATHS THIS ONES
andreyandreev [35.5K]

Answer:

n=30p=450

Step-by-step explanation:

10n+250=p

10×20+250=450

n=20 p=450

8 0
3 years ago
Read 2 more answers
Can someone please give me the area to this. Yes I know a=B*H but I just need the answer to this
seraphim [82]
It is actualy A = w * l

so 

A = 264

then we minus 30 which equals both areas of the triangles combined, so the final answer is......  234
3 0
3 years ago
Mr Tom shared $300 between his two sons aged 15 years and 10 years in
Sonbull [250]

Answer:

Son of 15 years $180

Son of 10 years $120

Step-by-step explanation:

15 + 10 = 25

   25          300

   15              x = 300*15/25

                    x = 180

   25          300

   10              x = 300*10/25

                    x = 120

Son of 15 years $180

Son of 10 years $120

3 0
4 years ago
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