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3 years ago

HELPPPPPPPPPPP PLEASEEEE THIS IS DUE IN 30 MINS

Mathematics

1 answer:

Daniel [21]3 years ago

3 0

Answer:

1. 5x + 5*2 = 30

2. 5x + 2 = 27

Step-by-step explanation:

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6c + 4d - c - 7d = ?<br><br> What is the answer to this question?

kondor19780726 [428]

The answer for this question will be 5c-3d
As put the equation into 6c-c+4d-7d which will be 5c-3d

4 0

3 years ago

Read 2 more answers

Solve for h <br> Someone please help out

dimulka [17.4K]

<h2>Answer:</h2>

$\boxed{h=\frac{6}{b}}$

<h2>Step-by-step explanation:</h2>

Solving for $h$ is the same as isolating it. In this problem, we have the following equation:

$6=bh$

So we need to do the following steps:

Step 1: Interchange the order of the equation:

$bh=6$

Step 2: Divide the whole equation by $b$ :

$\frac{1}{b}bh=\frac{1}{b}6$

Step 3: Simplify

$h=\frac{6}{b}$

Finally, this h is in term of b and is:

$\boxed{h=\frac{6}{b}}$

3 0

3 years ago

For many important processes that occur in the body, direct measurement of characteristics of the process is not possible. In ma

Sphinxa [80]

Answer:

The 95% confidence interval is between 26.5 ng/ml and 40.3 ng/ml

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{19.6}{\sqrt{31}} = 6.9$

The lower end of the interval is the sample mean subtracted by M. So it is 33.4 - 6.9 = 26.5 ng/ml

The upper end of the interval is the sample mean added to M. So it is 6.4 + 33.4 + 6.9 = 40.3 ng/ml

The 95% confidence interval is between 26.5 ng/ml and 40.3 ng/ml

7 0

3 years ago

Please help . I’ll mark you as brainliest if correct!!!

damaskus [11]

Answer:10 Seconds

Step-by-step explanation:

s=1600 ft

t=√(s) /4

t=√(1600)/4

t=40/4

t=10 seconds

8 0

3 years ago

Steve sang a song so bad it made 10 students laugh. Each of those 10 students made 10 other students laugh. If Steve was laughin

Talja [164]

Answer:

111 students.

Step-by-step explanation:

If each of the 10 students made 10 other students laugh then 10 students x 10 students = 100 additional students. If you add the 100 additional students, the 10 original students, and Steve, you get 111 laughing students in total.

4 0

3 years ago