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babymother [125]
3 years ago
5

Solve for x -2x - 5 + 4x = 7 + 6x Question 2 options: x=3 x=2 x= -3 x= -2

Mathematics
1 answer:
noname [10]3 years ago
3 0

Answer:

x=-4

Step-by-step explanation:

x - 2x - 5 +4x = 7 + 6x

           3x - 5 = 7 +6x

          -3x             -3x

                 -5 = 7 + 3x

                 -7    -7

                -12 = 3x

              -12/3= 3x/3

                  -4 = x              

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A machine that makes dimes is adjusted to make them at diameter 1.9 cm. Production records show that when the machine is properl
yanalaym [24]

Answer:

0.0772

Step-by-step explanation:

P(Power) + P(Type II Error) = 1, so P(Type II Error) = 1 – P(Power) = 1 – 0.9228 = 0.0772.

8 0
3 years ago
An electronics store has portable CD players on sale for $54.95. If the local sales tax is 6.5%, what is the total cost of a CD
borishaifa [10]

Answer:

Total cost of CD player = $58.52

Step-by-step explanation:

Given data:

Price of CD player on sale= $54.95

Local sales tax = 6.5%

Total cost of CD player = ?

Solution:

Local sales tax= (6.5 * 54.95)/100 = $3.57

Total cost of CD player = Price of CD player on sale + Local sales tax

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         Total cost of CD player = $58.52



7 0
3 years ago
Number Lines / Algebra. Can anyone please tell me to answers to all of these number lines below. Thank you!!
iren [92.7K]
I will do the first-two lines only.

-4 -3 -2 -1 0 1 2 3 4 5 6

Next line below.

-5 -4 -3 -2 -1 0 1 2 3 4 5

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5 0
3 years ago
A group of 50 New York psychology students got a mean score of 530 on the psychology GRE with a standard deviation of 80. These
lesantik [10]

Answer: No, New York students are not truly more nerdy than the California students.

Step-by-step explanation:

Since we have given that

Number of students in a group = 50

Mean score of New York psychology = 530

Mean score of California psychology = 515

Standard deviation = 80

So, we will find t-distribution first.

t=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\t=\dfrac{530-515}{\dfrac{80}{\sqrt{50}}}\\\\t=1.32

Let α = 5% = 0.05

So, t_{\alpha,2}=2.920

Since t < t(critical value)

No, New York students are not truly more nerdy than the California students.

3 0
3 years ago
Whats the square root of 826 also looking for a minecraft girI needs to be 15 or older
skad [1K]

Answer:

28.740,

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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