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9966 [12]
3 years ago
7

5x -4y = -23 -5x + 9y =8

Mathematics
1 answer:
NARA [144]3 years ago
4 0

Answer:

Let's solve for x.

5x−4y=−23−5x+9y

Step 1: Add 5x to both sides.

5x−4y+5x=−5x+9y−23+5x

10x−4y=9y−23

Step 2: Add 4y to both sides.

10x−4y+4y=9y−23+4y

10x=13y−23

Step 3: Divide both sides by 10.

10x

10

=

13y−23

10

x=

13

10

y+

−23

10

Answer:

x=

13

10

y+

−23

10

Step-by-step explanation:

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Mark the points with the coordinates (4, 14), (22, 6), and (16, 18). Connect the points to form a triangle. and what type of tri
Yakvenalex [24]

Answer:

Step-by-step explanation:

You have  the  points (4, 14), (22, 6), and (16, 18).

It is important to remember that he first number of each point is the x-coordinate of that point and the second number of each one of them is the y-coordinate of that point.

Therefore, knowing the above, you can mark each point, as you can observe in the image attached, and then you can connect the points to form the triangle shown in the image.

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4 years ago
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How do you solve 6-(-4)?
mina [271]

Answer:

10

Step-by-step explanation:

Since you are subtracting a negative number, the negative integer actually becomes positive making the equation 6+4 = 10

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3 years ago
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Please awnser question from image down below
Natalija [7]

Answer:

C 10 in

Step-by-step explanation:

side of P is \sqrt{36} = 6

side of Q is \sqrt{64} = 8

for missing side use Pythagorean theorem

r^{2} = 6^{2}  + 8^{2}

r^{2} = 36 + 64

r^{2} = 100

r = 10 in

8 0
2 years ago
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How many days and hours are in 125 hours ?
Evgesh-ka [11]

Answer:

5 days and two hours

Step-by-step explanation:

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6 0
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A psychologist wants to see if a certain company has fair hiring practices in an industry where 60% of the workers are men and 4
makvit [3.9K]

Answer:

A) H_{0}: p=0.5 (At least half of the workers are women,fair)

B) H_{a}: p<0.5 (Less than half of the workers are women,unfair)

C) critical value of the test statistic is 1.64 (one tailed)

D) Test statistic is ≈ 0.29

E) Since 0.29<1.64, we fail to reject the null hypothesis. There is no significant evidence that the company has unfair hiring practices at 0.05 significance level.

Step-by-step explanation:

Let p be the proportion of women workers in the company. Null and alternative hypotheses are

H_{0}: p=0.5 (At least half of the workers are women,fair)

H_{a}: p<0.5 (Less than half of the workers are women,unfair)

Test statistic can be found using the equation:

z=\frac{p(s)-p}{\sqrt{\frac{p*(1-p)}{N} } } where

  • p(s) is the sample proportion of women workers (\frac{55}{107} =0.514)
  • p is the proportion assumed under null hypothesis. (0.5)
  • N is the sample size (55+52=107)

Then z=\frac{0.514-0.5}{\sqrt{\frac{0.5*0.5}{107} } } ≈ 0.29

For alpha 0.05, critical value of the test statistic is 1.64 (one tailed)

Since 0.29<1.64, we fail to reject the null hypothesis. There is no significant evidence that the company has unfair hiring practices at 0.05 significance level.

4 0
3 years ago
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