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charle [14.2K]
3 years ago
9

Please help and show the work

Mathematics
1 answer:
ozzi3 years ago
3 0

9514 1404 393

Answer:

  (C) no solutions

Step-by-step explanation:

If you multiply the first equation by 2, you get ...

  2x +2y = 4

When you compare this to the second equation ...

  2x +2y = 8

you realize there are <em>no values of x and y that can satisfy both equations</em>. There are no solutions.

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Vhich graph represents a function?
olga2289 [7]

Answer:

answer D or the 4th answer

3 0
4 years ago
Can anyone please help me :)
Solnce55 [7]

Answer:

5 to the 15th power.

Step-by-step explanation:

PEMDAS requires us to do parenthesis, then exponents, and then division. Let's do 5³. 5x5x5 is equal to 125. Now, we find 125 to the ninth power. According to my calculations, 125 to the ninth power is equal to 7,450,580,596,923,828,125. Now, we find 5 to the twelfth power, which, according to my calculations, is 244,140,625. Now, we solve. According to my calculations, 7,450,580,596,923,828,125/244,140,625 is equal to 30,517,578,125. 30,517,578,125 is equivalent to 5 to the 15th power. That means that the second option is correct. I hope this helps!

3 0
3 years ago
Adecco Workplace Insights Survey sampled men and women workers and asked if they expected to get a raise or promotion this year
Mumz [18]

Answer:

Yes

Step-by-step explanation:

Let p1 represent proportion of women and p2 proportion of men. The null and alternative hypothesis will be as follows

Null hypothesis

H_o=p2-p1 ≤0

Alternative hypothesis

H_a=p2-p1>0

Sample proportion of women, p1=74/200=0.37

Sample proportion of men is p2=104/200=0.52

Level of significance is 0.01

Pooled proportion=\frac {104+74}{200+200}=0.445

Test statistic

z=\frac {(0.52-0.37)-0}{0.445(1-0.445)*\sqrt{(1/200+1/200)}}=6.9124

p-value=P(Z≥z)=P(Z≥6.9124)=P(Z≤-6.9124)=0

Since the value of p is less than 0.01, we reject null hypothesis. There’s sufficient evidence that a greater proportion of men is expecting to get a raise

6 0
4 years ago
Which answer choice correctly simplifies the expression Hint: Use distributive property and watch your signs. -4 (x2 - 2xy + 5y2
Sever21 [200]

Answer: -4x^2 + 8xy - 20y^2 + 12

Step-by-step explanation:

-4 (x2 - 2xy + 5y2 - 3)

-4(x^2) = -4x^2

-4(-2xy) = 8xy

-4(5y^2) = -20y^2

-4(-3) = 12

6 0
3 years ago
What is the exact area of a circle whose radius is 9 yd? Enter your answer in the box. Express your answer in terms of
atroni [7]

Answer:

81\pi

Step-by-step explanation:

Area = pi*r^2

Area = pi*9^2

Area = 81\pi

6 0
3 years ago
Read 2 more answers
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