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jenyasd209 [6]
3 years ago
11

2x - 1 = 7 I need help with this equation

Mathematics
2 answers:
77julia77 [94]3 years ago
5 0

Answer:

×=4

Step-by-step explanation:

2x-1=7. so you have to add the 1 to both sides.

2x=8. then you divide the 2 on both sides to get x by itself.

x=4

KonstantinChe [14]3 years ago
4 0

Answer:

x = 4

Step-by-step explanation:

2x - 1 = 7

7 + 1

= 8

2x = 8

x = 4

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You can make a table like this:


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Then 6 bags must equal six times the weight of the first bag
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Your answer is reasonable because 5+5+5+5+5+5=30

a.k.a
=5 =30


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3 years ago
The amount of time it takes Evelyn to go grocery shopping is continuous and uniformly distributed between 20 minutes and 44 minu
vivado [14]

Answer:

85.71% probability that it takes Evelyn less than 38 minutes given that it takes less than 41 minutes for her to go grocery shopping

Step-by-step explanation:

An uniform probability is a case of probability in which each outcome is equally as likely.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The probability that we find a value X lower than x is given by the following formula.

P(X < x) = \frac{x - a}{b-a}

Uniformly distributed between 20 minutes and 44 minutes.

This means that a = 20, b = 44.

What is the probability that it takes Evelyn less than 38 minutes given that it takes less than 41 minutes for her to go grocery shopping

We know that it takes less than 41 minutes, so we can update b to 41.

So

P(X < 38) = \frac{38 - 20}{41 - 20} = 0.8571

85.71% probability that it takes Evelyn less than 38 minutes given that it takes less than 41 minutes for her to go grocery shopping

4 0
3 years ago
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ki77a [65]

Answer:

True

Step-by-step explanation:

In order for a relation (a set of ordered pairs) to be considered a <em>function</em>, every value in the <em>domain</em> (the set of all the first numbers in the pair) is associated with one value in the <em>range</em> (the set of all second numbers in the pair). This is easiest to see visually. Our domain is the set {2, 3, 4, 5} and our range is the set {4, 6, 8, 10}, and we can visualize the ordered pair (2, 4) as an "arrow" starting a 2 in the domain and ending at 4 in the range. When seen this way, a relation is a function if <em>every value in the domain only has one arrow coming out of it</em>. We can see from the attached picture that the ordered pairs in the problem are a function, so this statement is true.

8 0
3 years ago
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