Ask question

Ask question

All categories

3 years ago

9

Threa consecutive integers have a sum of 30. Which equation can be used to find x, the value of the smallest of the three number

s?

2 answers:

nadya68 [22]3 years ago

7 0

Answer:

x + (x + 1) + (x + 2) = 30

igor_vitrenko [27]3 years ago

6 0

Answer:

9

Step-by-step explanation:

X+X+1+X+2=30

3x+3=30

-3. -3

3X=27

Divide by 3

X=9

You might be interested in

What is an equation in point-slope form of the line that passes through the point (4, −1) and has slope 6?

AveGali [126]

Answer: A

Step-by-step explanation:

See attached picture

7 0

4 years ago

In a large school, it was found that 77% of students are taking a math class, 74% of student are taking an English class, and 70

Iteru [2.4K]

Answer:

0.81 = 81% probability that a randomly selected student is taking a math class or an English class.

0.19 = 19% probability that a randomly selected student is taking neither a math class nor an English class

Step-by-step explanation:

We solve this question working with the probabilities as Venn sets.

I am going to say that:

Event A: Taking a math class.

Event B: Taking an English class.

77% of students are taking a math class

This means that $P(A) = 0.77$

74% of student are taking an English class

This means that $P(B) = 0.74$

70% of students are taking both

This means that $P(A \cap B) = 0.7$

Find the probability that a randomly selected student is taking a math class or an English class.

This is $P(A \cup B)$ , which is given by:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

So

$P(A \cup B) = 0.77 + 0.74 - 0.7 = 0.81$

0.81 = 81% probability that a randomly selected student is taking a math class or an English class.

Find the probability that a randomly selected student is taking neither a math class nor an English class.

This is

$1 - P(A \cup B) = 1 - 0.81 = 0.19$

0.19 = 19% probability that a randomly selected student is taking neither a math class nor an English class

6 0

3 years ago

My dog is 113cm tall how many meters tall is my dog? (Hint: 1m=100cm (hint: 1 m=100cm

Llana [10]

Answer:

Your dog will be 1.13 meters tall

7 0

3 years ago

On a scale drawing, the scale factor is 1/12. A plum tree is 7 inches tall on the scale drawing. What is the actual height of th

Sedbober [7]

B. 84

The scale factor is 1/12 which means to get back to the actual height, you would multiply 7x12

7 0

3 years ago

Read 2 more answers

In how many ways can six people line up from left to right for a group photo?

babymother [125]

There are $n!$ ways to order $n$ objects.

So, the answer is $6!=720$ ways.

5 0

3 years ago