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Paraphin [41]
3 years ago
15

4-2(x+7)=3(x+5) can ya'll help me with the steps.

Mathematics
2 answers:
Ksenya-84 [330]3 years ago
4 0

Answer:

x = -5

Step-by-step explanation:

4 - 2(x+7) = 3(x+5)

4 - 2*x - 2*7 = 3*x + 3*5

4 - 2x - 14 = 3x + 15

4 - 14 - 15 = 3x + 2x

-25 = 5x

x = -25/5

x = -5

Check:

4 - 2(-5+7) = 3(-5+5)

4 - 2*2 = 3(0)

4 - 4 = 0

maria [59]3 years ago
3 0

Answer:

x = -5

Step-by-step explanation:

4-2(x+7)=3(x+5)

Distribute

4 -2x-14 = 3x+15

Combine like terms

-2x-10 = 3x+15

Add 2x to each side

-2x-10+2x= 3x+15+2x

-10 = 5x+15

Subtract 15 from each side

-10-15 = 5x+15

-25 = 5x

Divide by 5

-25/5 = 5x/5

-5 =x

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Answer:

<h2><u><em>x = 2 or -3</em></u></h2>

Step-by-step explanation:

What is x in x^2-x-6=0 pls

x^2 - x - 6 = 0

x + 2 * x - 3 = 0

x + 2 = 0

x - 3 = 0

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3 years ago
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Quadratic equation has 5x+0 as a linear factor what value is a zero of the associated quadratic function.
natka813 [3]

9514 1404 393

Answer:

  x = 0

Step-by-step explanation:

The zero is the value of x that makes the linear factor zero:

  5x +0 = 0

  5x = 0 . . . . . simplify

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The associated zero is x = 0.

7 0
3 years ago
8.7204 i expanded form
maria [59]

8 + 0.7 + 0.02 + 0.0004 is 8.7204 in expanded form
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If the area of each triangular regions is as shown, what is the area of the polygon?
topjm [15]
For this case, what you must do is add the area of each of the triangles to find the total area of the polygon.
 We have then:
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Option 3
4 0
3 years ago
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Consider two medical tests, A and B for a virus. Test A is 90% effective at recognizing the virus when it is present, but has a
Licemer1 [7]

1

P(V|A) is not 0.95. It is opposite:

P(A|V)=0.95

From the text we can also conclude, that

P(A|∼V)=0.1

P(B|V)=0.9

P(B|∼V)=0.05

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P(∼V)=0.99

What you need to calculate and compare is P(V|A) and P(V|B)

P(V∩A)=P(A)⋅P(V|A)⇒P(V|A)=P(V∩A)P(A)

P(V∩A) means, that Joe has a virus and it is detected, so

P(V∩A)=P(V)⋅P(A|V)=0.01⋅0.95=0.0095

P(A) is sum of two options: "Joe has virus and it is detected" and "Joe has no virus, but it was mistakenly detected", therefore:

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7 0
3 years ago
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