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Scilla [17]
3 years ago
13

Calculate 7x +5 - 3x - 7 = 10

Mathematics
2 answers:
Tatiana [17]3 years ago
7 0

7x +5 - 3x - 7 = 10 4x-2=10 4x=10+2 4x=12 X=12÷4 X= 3

vredina [299]3 years ago
6 0

You answer is 3 and here's why...

7x + 5 - 3x - 7 = 10

First you must collect like terms

And that gives us

4x - 2 = 10

Next you must simplify by removing additives

4x - 2 + 2 = 10 + 2

4x = 12

Now you must divide

4x/4 = 12/4

x = 3

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A baseball player has a batting average of 0.26. What is the probability that he has exactly 6 hits in his next 7 at bats
LenKa [72]

Answer:

0.0016

Step-by-step explanation:

Batting average, p = 0.26

n = 7

x = 6

With p = 0.26 as success rate

1-p is equal to failure rate which is = 0.74

We have to solve this by using the binomial distribution formula.

P(X= x)

= nCx * p^x * (1-p)^(n-x)

P(X = 6)

=7C6 × 0.26^6 ×(1-0.26)^(7-6)

= 7 × 0.0003089 × 0..74¹

= 0.0016

So probability that he has exactly 6 hits in his next 7 bats is equal to 0.0016.

8 0
3 years ago
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taurus [48]
8.8 squared + 9.5 squared = square root 12.94 rounded 12.1
3 0
3 years ago
Rewrite without parentheses and simplify (v-7)^2
Zina [86]
Your answer correct good night

8 0
3 years ago
What is the length of the hypothenuse of the triangle?
BlackZzzverrR [31]

Answer:

26ft

Step-by-step explanation:

10^2 +24^2 =AB^2

AB=26

3 0
3 years ago
Read 2 more answers
Paul Havlik promised his grandson Jamie that he would give him $7,100 7 years from today for graduating from high school. Assume
Dominik [7]

Answer:

\large \boxed{\$4100.07}

Step-by-step explanation:

The formula for the future value (FV) of an investment earning compound interest is

FV = PV \left (1 + \frac{r}{n} \right )^{nt}

where

PV = the present value (PV) of the money invested

  r = the annual interest rate expressed as a decimal fraction

  t = the time in years

 n = the number of compounding periods per year

Data:

FV = $7100

  r =  8 % = 0.08

  t = 7 yr

 n = 2

Calculation:

\begin{array}{rcl}\\7100& =& PV \left (1 + \dfrac{0.08}{2} \right )^{2 \times 7}\\\\& =& PV (1 + 0.04)^{14}\\\\& =&PV (1.04)^{14}\\& =& PV(1.731676)\\PV& =& \dfrac{7100}{1.731676}\\\\& =& \mathbf{4100.07}\\\end{array}\\\text{The present value of the money is $\large \boxed{\mathbf{\$4100.07}}$}

4 0
3 years ago
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