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3 years ago

2|3xy-4|+x if x= -2 and y = 4

Mathematics

2 answers:

andre [41]3 years ago

8 0

I got 60 for the answer. When you plug the number in you use parentheses.

sp2606 [1]3 years ago

6 0

Answer:

54.

Step-by-step explanation:

2|3xy-4|+x when x = -2 and y = 4.

= 2|3*-2*4 - 4| + (-2)

= 2|-28| - 2

= 2*28 - 2 ( Note the vertical lines means the absolute value (positive 28)).

= 54.

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The table below shows the typical hours worked by employees at a company. A new employee is offered an annual salary of $37,000.

Mademuasel [1]

Answer:

Salaried pay is preferable for a new employee

Step-by-step explanation:

As per table, hours worked per week:

0+ 8.5+ 9.5+ 7.5+ 8+ 8.5+ 4 = 46

Employee gets paid for 46 hours per week:

$40*14 + (46- 40)*$21 = $686

Average yearly salary would be:

$686/7*365 = $35770

Comparing with annual salary, we see:

$37000 > $35770

As we see, hourly employees get paid less, so the new employee should choose annual salary option

7 0

4 years ago

Which expression would you use to estimate 36% of 84?

Rainbow [258]

I'm not sure what expression you're referring to, but if I wanted to find 36% of 84, I'd divide 84 by 100 and then multiply it by 36.
The answer would be 30.24.

8 0

3 years ago

You sell instruments at a Caribbean music festival. You earn $326 by selling 12 sets of maracas, 6 sets of claves, and x djembe

r-ruslan [8.4K]

The equations that you would use is 14x+6x+16x=326, where x is equal to the number of instruments sold. If you plug in the 12 sets of maracas, the 5 sets of claves and x djember drums and multiply by the prices for each instruments, you should be able to find your answer. Your answer should be you sold 8 djembe drums. Using the information i provided to you plug the numbers in and see if your answer matches up with mine. let me know if you have any further questions.

5 0

4 years ago

Can someone help me on both of the questions?!

agasfer [191]

(1) The correct answer is: Pressure = P = 70 N/m²

Explanation:
Pressure is force per unit area. Mathematically, we can write Pressure as follows:

 $P = \frac{F}{A}$ --- (1)

Where P = Pressure = ?
F = Force = 140N
A = Area = 2.0m²

Plug in the values in (1):
P = 140/2.0
P = 70 N/m²

(2) The air particles in the inflated balloon are in chaotic motion. They are moving randomly and colliding with each other and with the inner wall of the balloon, exerting pressure on the wall of the balloon. Furthermore, they are far apart from each other, which is why when you squeeze the balloon, its shape changes accordingly as long as you are putting pressure on it while squeezing.

7 0

3 years ago

Read 2 more answers

WILL MARK BRAINLIEST FOR THE BEST ANSWER. PLEASE SHOW FULL SOLUTIONS. THANK YOU AND GOD BLESS. THE QUESTION IS ATTACHED. :)

Anuta_ua [19.1K]

9514 1404 393

Answer:

(x, y) = (34/5, -4/5) = (6.8, -0.8)

Step-by-step explanation:

Subtract the first equation from the second to eliminate x.

$\left(\dfrac{x}{3}-\dfrac{y}{2}\right)-\left(\dfrac{x-5}{3}+\dfrac{y+2}{3}\right)=\left(\dfrac{8}{3}\right)-(1)\\\\y\left(-\dfrac{1}{2}-\dfrac{1}{3}\right)+\left(\dfrac{5}{3}-\dfrac{2}{3}\right)=\dfrac{5}{3} \qquad\text{partially simplify}\\\\-\dfrac{5}{6}y=\dfrac{2}{3} \qquad\text{subtract 1}\\\\y=-\dfrac{4}{5} \qquad\text{multiply by $-\dfrac{6}{5}$}$

Substituting for y in the second equation, we can find x.

$\dfrac{x}{3}-\dfrac{1}{2}\left(-\dfrac{4}{5}\right)=\dfrac{8}{3}\\\\5x +6=40 \qquad\text{multiply by 15}\\\\5x=34\qquad\text{subtract 6}\\\\x=\dfrac{34}{5}$

The solution is (x, y) = (34/5, -4/5) = (6.8, -0.8).

7 0

3 years ago