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BARSIC [14]
3 years ago
11

#1: Solve the equation below. 5x + 7 = -3x + 31​

Mathematics
2 answers:
svlad2 [7]3 years ago
8 0

Answer:

x=3

Step-by-step explanation:

You can solve by:

5x+7=-3x-31

adding 3x to each side:

8x+7=31

Subtract 7 from each side:

8x=24

Divide each side by 8:

x=3

That is your answer

Hope this helps!

cricket20 [7]3 years ago
4 0

Answer: x=3

Step-by-step explanation:

5x+7=-3x31

5x+7-7=3x+31-7

subtract the numbers

5x=-3x+24

add 3x to both sides

5x=-3x+24

5x+3x=3x+24+3x

combine like terms

8x=24

divide both sides of the equation by the same term 8x=24

8x/8 = 24/8

cancel terms that are in both numerator and denominator

divide the numbers

x=3

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Ratling [72]

= x·[2(x²- 4x + 4) + 3(x² + 6x + 9) - x² + 5x]

= x(2x² - 8x + 8 + 3x² + 18x + 27 - x² + 5x)

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5 0
3 years ago
Dale currently has $599 in his savings account. Prior to getting paid, he had $230 in his savings account. How much was Dale’s p
nlexa [21]
Hi!

So really focus on the fact that he started at $230, and then added an amount of money which we'll call x, which made his total equal $599. 

Take the parts I put in bold, and write the equation.
$230 + x = $599

Now we need to find x. 

Whatever we do to the equation, we do it to both sides. 
Our goal is to isolate x on one side. 

Subtract 230 from both sides. 
$230 - $230 + x = $599 - $230
x = $369

The answer is A. $230 + x = $599 x = $369

Hope this helps! :)
-Peredhel
8 0
3 years ago
Approximately 12.6% of all (untreated) Jonathan apples had bitter pit in a study conducted by the botanists Ratkowsky and Martin
bagirrra123 [75]

Answer:

Step-by-step explanation:

Let n be a random variable that represents the first Jonathan apple chosen at random that has bitter pit.

a) P(X = n) = q(n-1)p, where q = 1 - p.

From the information given, probability if success, p = 12.6/100 = 0.126

b) for n = 3, the probability value from the geometric probability distribution calculator is

P(n = 3) = 0.096

For n = 5, the probability value from the geometric probability distribution calculator is

P(n = 5) = 0.074

For n = 12, the probability value from the geometric probability distribution calculator is

P(n = 12) = 0.8

c) For n ≥ 5, the probability value from the geometric probability distribution calculator is

P(n ≥ 5) = 0.58

d) the expected number of apples that must be examined to find the first one with bitter pit is the mean.

Mean = 1/p

Mean = 1/0.126 = 7.9

Approximately 8 apples

7 0
3 years ago
Hello!! I have a question, can you please answer it. ^^
xeze [42]

Answer:

1. 75

2. 1

Step-by-step explanation:

5 0
3 years ago
Let f(x) = 5x + 12. Find f−1(x).
Brilliant_brown [7]
It would be the top one bro i know
4 0
3 years ago
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