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Lynna [10]
2 years ago
8

I NEED HELP PLEASE and thx ​

Mathematics
1 answer:
Galina-37 [17]2 years ago
3 0

Answer:

Step-by-step explanation:

a.

By multiplying -2x by 3 to get -6x, which will cancel out with 6x.

b. We could also multiply -4y by -2 to get 8y, so it cancels out with -8y.

Hope this helps!

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A factory sells backpacks for $40.00 each. The cost to make 1 backpack is $10.00. In addition to the cost of making backpacks, t
Angelina_Jolie [31]

Answer:

<h2>The factory needs to sell 327 packbacks to make at least 9,800 per week.</h2>

Step-by-step explanation:

We know that each backpacks is sold for $40.00.

The goal is to make at least $9,800 per week. With this information we can define the inequality

40x -10x \leq 9,800

Where x represents backpacks. Notice that this inequality is about profits, that's why we subtract the cost from the sell price, in this case, the profid margin is $30.00 per backpack, so

30x\leq 9,800

Solving for x

x\leq \frac{9800}{30}\\ x \leq 326.67

Therefore, the factory needs to sell 327 packbacks to make at least 9,800 per week.

7 0
3 years ago
Someone help and please make sure it is right :)
anzhelika [568]
X=5

9x+5=50 because of alternate exterior angles are congruent so then you would subtract 5 from each side to get 9x=45 and then divide by 9 on each side to get x=5
3 0
2 years ago
Which expression is equivalent to 5+5t+3t+7?​
AveGali [126]

Answer: 10t+10=20

Step-by-step explanation:

8 0
3 years ago
there is an antenna on the top of a building. From a location 300 ft from the base of the building, the angle of elevation to th
lukranit [14]

Answer:

300tan43 - 300tan40

Step-by-step explanation:

Use tangent to find the height of the building:

tan40 = b/300

b = 300tan40

The use tangent to find the height to the top of the antenna:

tan43 = a/300

a = 300tan43

The antenna height = a - b

7 0
3 years ago
Solve 3(2x - 1) + 4x = 4(3x - 1) - 9
suter [353]

x = 5

Step-by-step explanation:

  • 3 ( 2x - 1 ) + 4x = 4 ( 3x - 1 ) - 9
  • 6x - 3 + 4x = 12x - 4 - 9
  • 10x - 3 = 12x - 13
  • - 3 + 13 = 12x - 10x
  • 10 = 2x
  • x = 10 / 2
  • x = 5

<h3>Hope it helps you ツ</h3>
6 0
2 years ago
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