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Furkat [3]
4 years ago
14

Need help on this question

Mathematics
1 answer:
grin007 [14]4 years ago
8 0

Answer:

Take 2 to the other side,

So, x = 4 - 2

Answer: x = 2

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(4 – 2r3 + 5r2 – 9r + 3) = (r - 1)
PilotLPTM [1.2K]

Answer: The answer for this r ≈ 1.16095869

4 0
4 years ago
A set of data has a normal distribution with a mean of 50and a standard deviation of 8. What percent of the data should be less
meriva

50% of data will be less than 50

Step-by-step explanation:

A normal distribution has the shape of the graph like a bell.

Given

Mean=50\\SD = 8

we have to find how much data will be less than 50.

So we have to calculate z-score for 50.

z-score=\frac{x-Mean}{SD}\\=\frac{50-50}{8}=0

The z-score is zero. As we have to find the number of values less than 50 we will find the area to the left of curve

P(z

In order to convert the probability into percentage

=0.50*100

=50%

Hence,

50% of data will be less than 50

Keywords: Probability, Area under the curve

Learn more about z-score at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

#LearnwithBrainly

6 0
3 years ago
Greenfield village is spread across 240 acres of land. Only 37% of the land is used for the exhibits, while the rest of the land
Sergeeva-Olga [200]

Answer:

The land which are used for exhibits are <u>89 acres</u> (approximately).

Step-by-step explanation:

Given:

Village is spread across 240 acres of land. 37%  of land is used for the exhibits.

Now, we have to find acres of land which are used for exhibits.

So, here it is given that land used for exhibits is 37%, and we have to calculate the quantity from the percentage given:

According to question:

37% of 240 acres of land.

\frac{37}{100}\times 240

0.37\times 240

88.80

So, the land used for exhibits are 88.80 acres.

Therefore, the land which are used for exhibits are <u>89 acres </u>(approximately).

5 0
4 years ago
Charnise uses 3 gal. red paint to 5 gal. white paint to make pink paint. She
professor190 [17]

The method into creating pink paint is mixing 3 gallons of red paint and 5 gallons of white paint together. This mixture only creates 8 gallons of paint and she needs 16 more. List the factors of 16:

1, 2, 4, 8, and 16

We notice that 8 can be factored out of 16 and becomes:

16 / 8 = 2

If we multiply the sample by 3 (the one already counted plus the two extra), we can discover how much paint is needed. Multiply everything by 3:

3 x 3 = 9

5 x 3 = 15

So in this case, 15 gallons of white paint and 9 gallons of red paint are need and combine for 24 gallons in total.

4 0
3 years ago
Find the equation of the line with an y-intercept of -3 and an x-intercept of -4.5
Naily [24]

how am i supposed to answer this?

6 0
3 years ago
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