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3 years ago

Will give Brainlyest. ASAP

Mathematics

1 answer:

crimeas [40]3 years ago

7 0

Answer:

The correct answer is B. 36.87

Step-by-step explanation:

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den301095 [7]

Answer:

$5 {x}^{2} + 3 {x}^{2} + 6x = 3x - 6x + 9x \\ 8 {x}^{2} + 6x = - 3x + 9x \\ 8 {x}^{2} + 6x = 6x \\ 8 {x}^{2} = 6x - 6x \\ 8 {x}^{2} = 0 \\ x = 0 \\ thank \: you$

5 0

3 years ago

1. 3 (x + 1)2 - 3

Ipatiy [6.2K]

A is 3
h is 1
k is -3

4 0

3 years ago

"How much do students pay, on average, for textbooks during the first semester in college? From a random sample of 400 students

dezoksy [38]

Answer: The margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

Step-by-step explanation:

Since we have given that

Sample size = 400

Mean = $357.75

Standard deviation = $37.89

At 95% confidence level, z = 1.96

We first find the margin of error.

Margin of error is given by

$z\times \dfrac{\sigma}{\sqrt{n}}\\\\=1.96\times \dfrac{37.89}{\sqrt{400}}\\\\=3.71$

95% confidence interval would be

$\bar{x}\pm \text{margin of error}\\\\=357.75\pm 3.71\\\\=(357.75-3.71,357.75+3.71)\\\\=(354.04,361.46)$

Hence, the margin of error = 3.71, confidence interval = (354.04, 361.46) and it means that mean cost is lies within the confidence interval.

7 0

3 years ago

Joanna will roll a fair number cube 90 times. how many times can she expect to roll a number greater than or equal to five?

pogonyaev

Answer:

30 times

Step-by-step explanation:

5 0

2 years ago

Order the following greatest to least 1. 10kg 2. 100g 3. 1,000,000mg

svlad2 [7]

Answer:

1, 2, 3

Step-by-step explanation:

Of the three units, the kilogram is the largest and the milligram is the smallest. The prefix “kilo” means a thousand and “milli” means one-thousandths.

1,000,000mg = 1kg

1kg = 1,000g

8 0

3 years ago

Read 2 more answers