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Serhud [2]
3 years ago
6

Solve the equation 14(3x-1)=2x-23

Mathematics
1 answer:
irina1246 [14]3 years ago
3 0

Answer:

x=\frac{-9}{40} \\

Step-by-step explanation:

Given Equation:

           14(3x-1)=2x-23

Solving the bracket on L.H.S

        (14)(3x)-1(14)=2x-23

             42x-14=2x-23

Taking the terms of 'x' to one side and the constants to other side

                 42x-2x=-23+14\\\\40x=-9\\\\x=\frac{-9}{40} \\

The value of 'x' after solving the equation is:

                            x=\frac{-9}{40} \\

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3 years ago
For each expression, combine like terms and write an equivalent expression with fever terms.
ASHA 777 [7]

Answer:

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2. 8x - 1

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3 years ago
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A baseball player has a batting average of 0.25. What is the probability that he has exactly 2 hits in his next 7 at bats
marissa [1.9K]

Answer:

The probability that he has exactly 2 hits in his next 7 at-bats is 0.3115.

Step-by-step explanation:

We are given that a baseball player has a batting average of 0.25 and we have to find the probability that he has exactly 2 hits in his next 7 at-bats.

Let X = <u><em>Number of hits made by a baseball player</em></u>

The above situation can be represented through binomial distribution;

P(X = r) = \binom{n}{r}\times p^{r} \times (1-p)^{n-r}; x = 0,1,2,......

where, n = number of trials (samples) taken = 7 at-bats

            r = number of success = exactly 2 hits

            p = probability of success which in our question is batting average

                   of a baseball player, i.e; p = 0.25

SO, X ~ Binom(n = 7, p = 0.25)

Now, the probability that he has exactly 2 hits in his next 7 at-bats is given by = P(X = 2)

          P(X = 2) =  \binom{7}{2}\times 0.25^{2} \times (1-0.25)^{7-2}

                        =  21 \times 0.25^{2} \times 0.75^{5}

                        =  <u>0.3115</u>

5 0
3 years ago
Please help with this question
Vladimir [108]
The answer is c because when you have 1 number and a variable(s) you just add the number to the variable(s)
6 0
2 years ago
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HELP ME PLEASE!!!!!!!<br> 50 POINTS!!
garri49 [273]

The scale factor that Thea uses to go from Rectangle Q to Rectangle R is equal to 6.

<h3>What is the scale factor from rectangle Q to rectangle R?</h3>

In geometry, the scale factor is a ratio of the resulting length to the initial length. Since the area of the square is equal to the square of its side length, then the scale factor is equal to:

k² = A' / A

k = √(A' / A)

Where:

  • k - Scale factor
  • A' - Area of the rectangle R.
  • A - Area of the rectangle Q.

If we know that A = 2 and A' = 72, then the scale factor is:

k = √(72 / 2)

k = √36

k = 6

Then, the scale factor that Thea uses to go from Rectangle Q to Rectangle R is equal to 6.

To learn more on scale factors: brainly.com/question/22312172

#SPJ1

7 0
1 year ago
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