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Murljashka [212]
3 years ago
13

Part 2 to that question answer right pls

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
7 0

Answer:

1) Decreases

2) 10.50

Step-by-step explanation:

Marta_Voda [28]3 years ago
4 0

Answer:

1. decreases

2. 31.50

Step-by-step explanation:

It decreases because there's a negative sign.

It's 31.50 because 10.50 * 3 = 31.50

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Somebody please help! I need this!
Mnenie [13.5K]

Answer:

216 ft is your answer

Step-by-step explanation:

10x5=50

6x5=30

6x8=48

6x8=48

8x5=40

Add all the sum, which would equal 216.

Hope this helps.

5 0
3 years ago
A certain standardized test's math scores have a bell-shaped distribution with a mean of 530 and a standard deviation of 119. Co
kumpel [21]

Answer:

a) 68.2%

b) 31.8%

c) 2.3%

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 530

Standard Deviation, σ = 119

We are given that the distribution of math scores is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(test scores is between 411 and 649)

P(411 \leq x \leq 649)\\\\= P(\displaystyle\frac{411 - 530}{119} \leq z \leq \displaystyle\frac{649-530}{119})\\\\= P(-1 \leq z \leq 1)\\\\= P(z \leq 1) - P(z < -1)\\= 0.841 - 0.159 = 0.682 = 68.2\%

b) P(scores is less than 411 or greater than 649)

P(x < 411 < x, x > 649)\\=1 = P(411 \leq x \leq 649)\\=1 - 0.682\\=0.318 = 31.8\%

c) P(score greater than 768)

P(x > 768)

P( x > 768) = P( z > \displaystyle\frac{768 - 530}{119}) = P(z > 2)

= 1 - P(z \leq 2)

Calculation the value from standard normal z table, we have,  

P(x > 768) = 1 -0.977 = 0.023 = 2.3\%

5 0
3 years ago
The answer that I found is the incorrect answer
vovikov84 [41]
I can’t see the image can you post it please or just tell me what the problem is
7 0
3 years ago
Can you please help and explain I will give brainliest or thanks
Evgesh-ka [11]
9. answer is 12
10. answer is 3.5
11. answer is 23
3 0
3 years ago
Read 2 more answers
You need to simplify L please help
Novay_Z [31]
7k + 4 is the simplified version
5 0
3 years ago
Read 2 more answers
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