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padilas [110]
3 years ago
14

How much of an alloy that is copper should be mixed with ounces of an alloy that is copper in order to get an alloy that is ​cop

per?
Mathematics
1 answer:
tekilochka [14]3 years ago
4 0

Answer:

1r + 8(400) = 3(r+400)

1r + 320 = 3r + 120

2r = 200

r = 200 / 2 = 1000

1400 * 3 = 420

100 + 320 = 420

Step-by-step explanation:

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Successful implementation of a new system is based on three independent modules. Module 1 works properly with probability 0.9, M
olga nikolaevna [1]

Answer:

The probability is 0.5086

Step-by-step explanation:

The probability P that at least one of these three modules will fail to work properly is calculated as:

P = 1 - P'

Where P' is the probability that all the modules works properly. So, P' os calculated as:

P' = 0.9 * 0.84 * 0.65

P' = 0.4914

Because 0.9 is the probability that module 1 works properly, 0.84 is the probability that module 2 works properly and 0.65 is the probability that module 3 works properly.

Finally, the probability P that at least one of these three modules will fail to work properly is:

P = 1 - 0.4914

P = 0.5086

8 0
4 years ago
Name the angle in 2 different ways and name the 2 rays from the diagram below please show work
timama [110]

Answer:

3) TB and NT

4) ∠KLM and ∠MLK

Step-by-step explanation:

3) those two rays intersect to form the angle shown in the diagram

4) an angle can always be named from left to right or right to left as long as the middle letter is always the vertex of the angle

3 0
3 years ago
Read 2 more answers
Louise bought 1 1/4 pounds of roast beef at $2.00 per pound and ​ 2 1/2 ​pounds of turkey at $1.50 per pound. What was her total
Vlad1618 [11]

1 1/4 * 2 + 2 1/2 * 1.5

change the fractions to decimals

1.25 * 2 + 2.5 * 1.5

2.5+3.75

6.25

The total cost is 6.25


6 0
4 years ago
Read 2 more answers
Please help! I’ll do anything I’ll give u brainly!
lana66690 [7]

Answer:

y>0.5

Step-by-step explanation:

Rearrange the equation so "y" is on the left and everything else on the right.

Plot the "y=" line (make it a solid line for y≤ or y≥, and a dashed line for y< or y>

Shade above the line for a "greater than" (y> or y≥)

or below the line for a "less than" (y< or y≤).

y+x>1

-y      -y

x>1-y

2x+y<3

   -y    -y

2x<3-y

divide by 2

x<1.5-y/2

1.5-y/2>1-y

-1.5+y   -1.5+y

<u>y>0.5</u>

8 0
3 years ago
HELP please... me please
andriy [413]

Step-by-step explanation:

punan Ang nga patlang sa bawat bilang sa pamamagitan ng pagtukoy ng multiples nito.5,45,___,___,135

28,35,42,____,____

60,_____,80,___,100

125,175,__,___,325

105,126,147,___,___

120,___,150,165,___

100,125,150,___,___

240,___,____,252,__256

360,___450,540,____,____

160,___,____,280,320

4 0
3 years ago
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