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castortr0y [4]
3 years ago
5

A webmaster makes $24 an hour for the first 38 hours she works during a week and $31 an hour for each hour worked over$38 hours.

Which piecewise equation models her total weekly pay Y in dollars as it relates to the number of hours X that she has worked during the week?
Mathematics
2 answers:
Basile [38]3 years ago
5 0

Answer:

y=\left\{\begin{matrix}24x & x\leq 38 \\ 31x & x > 38\end{matrix}\right.

Step-by-step explanation:

Here, x represents the number of hours she works in a week and y represents the amount she is paid,

Since, for the hours less than equal to 38,

She is paid $ 24 per hours,

That is, y = 24 x for x ≤ 38,

Also, she is paid $ 31 per hours for the hours more than 38,

That is, y = 31 x for x > 38,

Hence, the piece wish function that shows the given situation is,

y=\left\{\begin{matrix}24x & x\leq 38 \\ 31x & x > 38\end{matrix}\right.

Luden [163]3 years ago
3 0
X \leq 38       ->     24x
x > 38        ->      31(x-38) + 912

912 = 24*38   (You will have to have 38 hours to be able to be in this part of the piece wise function)
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Ava used the following equation in order to solve a math problem involving integers.
AnnZ [28]

Answer:

The only equation which is incorrect is in option B.

Step-by-step explanation:

Eva used the following equation in order to solving integers, which is  

\frac{-h}{-k} = j

⇒ j = \frac{h}{k} ......... (1)

Now, if the equation Ava used is correct, then we have to find which of the given equations is not correct.

Now, in option A) it is given that - j = \frac{- h}{k}

⇒ j = \frac{h}{k} which is same as equation (1).

In option B) it is given that - j = \frac{- h}{- k}

⇒ j = - \frac{h}{k} which is not same as equation (1).

In option C) it is given that - j = \frac{h}{- k}

⇒ j = \frac{h}{k} which is same as equation (1).

Again, in option D) it is given that j = \frac{h}{k}

⇒ j = \frac{h}{k} which is same as equation (1).

Therefore, the only equation which is incorrect is in option B. (Answer)

5 0
4 years ago
The total use of electricity in the United States was 0.4 trillion kilowatt-hours in 1950 and about 2.8 trillion kilowatt-hours
lora16 [44]

Answer: 7

Step-by-step explanation:

Scientific notation is a method that is used in very large numbers or when we've very small numbers. The number given will be multiplied by its power of 10. In this case,

2.8 trillion = 2,800,000,000,000

= 2.8 × 10^12

0.4 trillion = 400,000,000,000

= 4 × 10^11

Therefore, the times more electricity was there in 1999 than 1950 will be:

= (2.8 × 10^12) / (4 × × 10^11)

= (2.8/4) / (10^12 - 11)

= 0.7 × 10

= 7 times

There were 7 times more electricity that was there in 1999 than 1950.

3 0
3 years ago
PLEASE HELP!!!!!!!!!!!!
andrezito [222]

Answer:

1) $160

2) 20 girls

Step-by-step explanation:

Hope this helps!

4 0
4 years ago
Given the function f(x)=x2+2x+1, find:<br><br> f( 1/4 )
My name is Ann [436]

Answer:

1 9/16

Step-by-step explanation:

f(x)=x^2+2x+1

Let x = 1/4

f(1/4)=(1/4)^2+2*1/4+1

      = 1/16+ 1/2 +1

      = 1/16 + 8/16 + 1

      =1 9/16

6 0
4 years ago
Please help! alg 1! I really need a explaintion fastttt
Gelneren [198K]

Answer:

  1. y = -5x +10
  2. (0, 10)
  3. (1, 5)
  4. see attached

Step-by-step explanation:

1. Subtract 5x from both sides to put the equation in slope-intercept form:

  y = -5x +10

__

2. The y-intercept is the point corresponding to x=0. The y-value when x=0 is the constant in the equation: 10. Then the point is ...

  (x, y) = (0, 10)

You may notice this is one of the points listed in part 4, and is also used in question 3.

__

3. The x-value computed is 1; the y-value computed is 5. The point is ...

  (x, y) = (1, 5)

You may notice this is one of the points listed in part 4.

__

4. See attached

7 0
3 years ago
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