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Fofino [41]
3 years ago
11

What is -5(2a-3b)+5(3b-2a) simplified?

Mathematics
2 answers:
KIM [24]3 years ago
5 0
-10a+15b + 15b-10a = -20a+30b
Scilla [17]3 years ago
3 0
The answer is ............. -20a+30b
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The probability that a certain kind of component will survive a shock test is 3/4. Find the probability that exactly 2 of the ne
Marina86 [1]

Answer:

Therefore the required probability is =\frac{27}{128}

Step-by-step explanation:

The probability of success is \frac{3}{4}

The number of trial = 4

X= the items survive out of 4

P(x=r)=^nC_rq^{n-r}p^r        p =the probability of success and q = the probability failure.

p=\frac{3}{4}     and q=(1-\frac{3}{4})=\frac{1}{4}

\therefore P(X=2)=^4C_2(\frac{1}{4} )^2(\frac{3}{4} )^2

                  =\frac{4!}{2!2!} (\frac{1}{16} )(\frac{9}{16} )

                  =\frac{27}{128}

Therefore the required probability is =\frac{27}{128}

3 0
4 years ago
How can I subtract 9 2/5 - 8 4/5 ​
monitta

Answer:

0.6

Step-by-step explanation:

First make them into decimals so.

9.4 - 8.8 = 0.6

7 0
3 years ago
Read 2 more answers
How do i solve 51/2x-7=62
Nataly [62]

51/2x-7=62

  1. Multiply both sides by 2x-7

\frac{51}{2x-7} ×(2x-7) = 62(2x-7)

    2. Switch sides

62(2x-7) = 51

     3. Divide each side by 62

\frac{62(2x-7)}{62} = \frac{51}{62}

     4. Simplify

2x-7 = 51/62

     5. Add 7 on both sides

2x-7+7 = (51/62)+7

     6. Simplify

2x = 485/62

      7. Divide both sides by 2

2x/2= 485/62/2

x= 485/124

7 0
4 years ago
A 100g ball is placed into a graduated cylinder before the ball was placed inside the water was at 50ml but the ball is 105ml af
Sav [38]

Answer:

The answer to your question is: density = 1.82 g/ml

Step-by-step explanation:

Data

mass = 100 g

Volume = 105 ml - 50 ml

             = 55 ml

density = ?

Formula

            density = mass / volume

Process

            density = 100 / 55

            density = 1.82 g/ml

5 0
3 years ago
Explain how you would find the sum of 4.2 and 2.14
Ksju [112]
4.20 + 2.14 = 6.34 :))
3 0
3 years ago
Read 2 more answers
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