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Nostrana [21]
3 years ago
10

My question is, with this type of question, are you supposed to use subtraction instead of addition? Just asking because I had a

problem where it said 5(x+7) and my answer was 5x+35 *your writing equivalent expressions* and it used addition, which is why I added the sums of 5•x plus 5•7 which was 5x and 35. But I just wanna know if I use addition or subtraction for this problem, 3y(4-2y)

Mathematics
2 answers:
julia-pushkina [17]3 years ago
6 0

The answer to the one on the paper is -6y • (y - 2)

sergeinik [125]3 years ago
5 0

Im pretty sure you use addition? I may be wrong

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An electronics company makes communication devices for military contracts. The company just completed two contracts. The navy co
adelina 88 [10]

Answer:

Workers of army contract were more productive.

Step-by-step explanation:

To determine on which contract the workers were more productive compute the work done per hour by the workers for both contracts.

  • <u>Navy Contract</u>:

Number of devices = 2,300

Number of workers = 25

Number of weeks = 2 weeks

Number of hours per week = 40

The number of hours it took 25 workers to produce 2300 devices is =

=25\times2\times40\\=2000\ hours

Then number of devices produced in 1 hour is = \frac{2300}{2000}= 1.15\ devices\ per\ hour

  • <u>Army Contract</u>:

Number of devices = 5,500

Number of workers = 35

Number of weeks = 3 weeks

Number of hours per week = 40

The number of hours it took 35 workers to produce 5500 devices is ==35\times3\times40\\=4200\ hours

Then number of devices produced in 1 hour is = \frac{5500}{4200}= 1.31\ devices\ per\ hour

The workers for the army contract are more productive since they produce 1.31 devices per hour whereas the workers for navy contract produces 1.15 devices per hour.

4 0
3 years ago
Which value for a completes the conditional relative
Aleks [24]

Answer:

The answer is C) 0.1

Step-by-step explanation:

The missing variable has to complete the table and equal 1.0, so you have to find which answer will fit that requirement. 0.9 + 0.1 = 1.0

5 0
3 years ago
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Sandra scores 4 baskets in his first basketball game. She then scored the same number of baskets in each of her next 3 games. If
Fiesta28 [93]

19 - 4 = 15 baskets made in those last three games. If the same number of baskets were made in those three games, she made five in each game, because 5 + 5 + 5 = 15 (the number of baskets made in those final three games). Thus 5 baskets per game is the answer. Hope this helps!

8 0
3 years ago
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Pls help asap!:) tysm&lt;3
ale4655 [162]

m⁰ / u^(-3) = u³

= (-2)³

= -8

7 0
3 years ago
Which transformation represents a reflection over the y = x line?
dmitriy555 [2]

Answer:

see explanation

Step-by-step explanation:

Under a reflection in the line y = x

a point (x, y ) → (y, x )

4 0
4 years ago
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