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Blababa [14]
2 years ago
7

What is 8 - 7x = 1find x​

Mathematics
2 answers:
Natali5045456 [20]2 years ago
5 0

Answer:

x=1

Step-by-step explanation:

kvasek [131]2 years ago
5 0

Answer:

x = 1

Step-by-step explanation:

8 - 7x = 1

- 8       - 8

-7x = -7

/-7    /-7

x = 1

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It's the second option

Step-by-step explanation:

When inputting each of those numbers given in the question into the equation, you get the numbers in the second option.

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Five years after 650 high school seniors graduated, 400 had a college degree and 310 were married. Half of the students with a c
DedPeter [7]

Answer:

The probability that a student has a college degree or is not married is 0.8308.

Step-by-step explanation:

The information provided is:

Total number of high school seniors (<em>N</em>) = 650.

Number of seniors with a college degree (<em>n</em> (C)) = 400.

Number of seniors who were married, (<em>n</em> (M)) = 310.

Consider the Venn diagram below.

The probability of an event, say E, is the ratio of the favorable outcomes of <em>E</em> to the total number of outcomes of the experiment.

That is,

P(E)=\frac{n(E)}{N}

Here,

n (E) = favorable outcomes of <em>E</em>

N = total number of outcomes of the experiment.

The probability of the union of two events is:

P(A\cup B)=P(A)+P(B)-P(A\cap B)=\frac{n(A)+n(B)-n(A\cap B)}{N}

Compute the probability that a student has a college degree or is not married as follows:

P(C\cup M^{c})=\frac{n(C)+n(M^{c})-n(C\cap M^{c})}{N}

From the Venn diagram:

n (C) = 400

n (M^{c}) = N - n (M) = 650 - 310 = 340

n (C ∩ M^{c}) = 200

The value of P (C ∪ M^{c}) is:

P(C\cup M^{c})=\frac{n(C)+n(M^{c})-n(C\cap M^{c})}{N}=\frac{400+340-200}{650}=0.83077\approx0.8308

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3 years ago
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Please help me answer this !!!
OLga [1]
Need more information

8 0
3 years ago
1. Solve by factoring and using the zero product property. (Diamond &amp;<br> x2 – 2x – 15 = 0
Harlamova29_29 [7]

The factors are: x-5 and x+3

Step-by-step explanation:

Given

x^2-2x-15 = 0

Simplifying

x^2-5x+3x-15 = 0\\x(x-5) + 3(x-5) = 0\\(x+3)(x-5) = 0

Let us define the zero product property first

The zero product property states that

if ab=0 then either a=0 or b=0

So,

x+3 = 0\\x+3-3 = 0-3\\x = -3\\AND\\x-5 = 0\\x-5+5 = 0+5\\x = 5

Hence,

the factors are: x-5 and x+3

Keywords: Factorization, Zero product property

Learn more about factorization at:

  • brainly.com/question/10978510
  • brainly.com/question/11007026

#LearnwithBrainly

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