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2 years ago

Which algebraic expression is equivalent to the expression below?

Mathematics

2 answers:

pogonyaev2 years ago

7 0

 So the right answer is of option D .

Look at the attached picture

Hope it will help you....

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-pragya~~~

77julia77 [94]2 years ago

3 0

6(3x + 4) + 5(12-x) simplifies to

D) 13x + 84

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Find k so that the three equations 3x-y=2, 2x+8=3y, and y=kx have a common solution

andriy [413]

2x+8=3kx (3k-2)x+8=0
3x-kx=2. (3-k)x-2=0
3k-2)x+10=3-k)x
4k-5=10/x
///////
3x-y-2=2x+8-3y
X+2y-10=0
X+2kx-10=0
K=(10-x)/2x

8 0

3 years ago

Chad owns twice as many cds as carlin owns. if you add 6 to the number of cds chad owns and then divide by 7, you get the number

Luba_88 [7]

35 cds does carlin have

5 0

3 years ago

A whAt the theoretical probability

julsineya [31]

Answer:

a. $\frac{1}{6}$

b. $\frac{67}{450}$

Step-by-step explanation:

Theoretical probability is what we expect to happen and experimental probability is what actually happens.

a. In theoretical probability, it doesn't matter what happened in the past. So basically we want to know the probability of rolling a 3 when a number cube is rolled.

There are 6 faces (from 1 to 6) in a number cube. And there is 1 "3". So the probabilty of rolling a 3 is:

1/6

b. In experimental probability, we need to know what happened before. When the cube was rolled 450 times, it came up "3", 67 times.

Hence the experimental probabilty of rolling a "3" is:

67/450

6 0

3 years ago

For which sample size (n) and sample proportion (p) can a normal curve be

Nonamiya [84]

Answer:

Option c.

Step-by-step explanation:

Using the normal curve to approximate a sampling distribution:

For a sample size n and a proportion n, the normal curve can be used if:

$np \geq 10$ and $n(1-p) \geq 10$

Option a:

$np = 35*0.8 = 28 > 10$

$n(1-p) = 35*0.2 = 7 < 10$

So option a cannot be used.

Option b:

$np = 65*0.9 = 58.5 > 10$

$n(1-p) = 65*0.1 = 6.5 < 10$

So option b cannot be used.

Option c:

$np = 65*0.8 = 52 > 10$

$n(1-p) = 65*0.2 = 13 > 10$

So option c can be used, and is the answer

Option d:

$np = 35*0.9 = 31.5 > 10$

$n(1-p) = 35*0.1 = 3.5 < 10$

So option d cannot be used.

The answer is given by option c.

7 0

3 years ago

Help pleaseeeeeeeeeeeee

malfutka [58]

Answer:

i) +3

2.) 15

3.)5/8

4.)+98

5.)27

6.)17

7.) 12/17

8.)12/17

9.)+5

10.) 3.2

7 0

2 years ago