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Aloiza [94]
2 years ago
15

Solve for y. show work. answer may be left as decimal. 0.4(y+10)+0.6y=2

Mathematics
2 answers:
anygoal [31]2 years ago
8 0

Answer

-20

Step-by-step explanation:

0.4y + 0.06y = 0.10y

0.4 x 10 = 4

0.10y + 4 = 2

         -4     -4

0.10y/0.10 = -2/ 0.10 = -20

maxonik [38]2 years ago
4 0

Answer: y=2

Step-by-step explanation:

combine like terms 2+ -4 = .2 1y= -2

divide each side my 1 then simplifying y=2

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Find the area of the circle<br> Pls help quick
tigry1 [53]

Answer:

153.86.

Step-by-step explanation:

Formula for area of a circle: A= Pi R (R is radius) squared. First fill in the numbers: 3.14x7^2 Then Solve for the squared: 7^2=49, then finally multiply 49x3.14 which gets you to 153.86.

7 0
3 years ago
Need some great assistance! Thanks!
Lostsunrise [7]

Answer:

b

Step-by-step explanation:

step by step explanation I'm probly wrong

7 0
3 years ago
A student took a 20 question test. 16 of the questions were correct. What percent of the questions did the student get correct?
elena-14-01-66 [18.8K]

Answer:

80%

Step-by-step explanation:

16/20 = 0.80

80%

5 0
2 years ago
Read 2 more answers
In a batch of 100 parts, 40 are red, 50 are L-shaped and 22 are both red and L-shaped. What is probability that a part picked fr
Bogdan [553]

The probability that a part picked from this batch at random is either red or L-shaped is 0.68

Step-by-step explanation:

Let us revise some rules of probability

The addition rules are:

  • P(A or B) = P(A) + P(B) ⇒ mutually exclusive (events cannot happen  at the same time)
  • P(A or B) = P(A) + P(B) - P(A and B) ⇒ non-mutually exclusive (if they  have at least one outcome in common)

∵ A batch has 100 parts

∵ 40 are red

- Probability of an event is the [even occurs/total outcomes]

∴ P(red) = \frac{40}{100}=0.4

∵ 50 are L-shaped

∴ P(L-shaped) = \frac{50}{100}=0.5

∵ 22 are both red and L-shaped

∴ P(red and L-shaped) = \frac{22}{100}=0.22

This is non-mutually exclusive because there is a common between them, so we will use the 2nd rule

∵ P(red or L-shaped) = P(red) + P(L-shaped) - P(red and L-shaped)

∴ P(red or L-shaped) = 0.4 + 0.5 - 0.22

∴ P(red or L-shaped) = 0.68

The probability that a part picked from this batch at random is either red or L-shaped is 0.68

Learn more:

You can learn more about the probability in brainly.com/question/2254182

#LearnwithBrainly

3 0
3 years ago
For less than than an number x is eight
Lapatulllka [165]
If for is four then x-4=8
thus would make x 12
5 0
3 years ago
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