All categories

2 years ago

The answer of82.4 - 25

Mathematics

1 answer:

Readme [11.4K]2 years ago

8 0

Answer:

57.4

Step-by-step explanation:

82.4 - 25 is too easy, a calculator can solve this.

You might be interested in

PLS HELP I WILL GIVE BRAINLIEST

Luden [163]

Answer:

2.6

Step-by-step explanation:

I did the test and it was correct

5 0

2 years ago

Read 2 more answers

Find the value of x. Then find the m∠S and m∠T

Sophie [7]

Answer:

Step-by-step explanation:

<h2>Given, y = b m x m</h2><h2>y' = -b m x (m+1)</h2><h2>At any point (x1,y1)</h2><h2 /><h2>Equation of tangent is given by </h2><h2>y - y1 </h2><h2>------- = -b m x1 -(m+1)</h2><h2>x - x1</h2><h2>Y intercept = - m</h2><h2>X intercept = (m-1) × 1</h2><h2> m </h2><h2>Area bounced = 1 (m - 1)×1</h2><h2> ---- ---------------------- x m</h2><h2> 2 m</h2><h2>For area to be constant, m = 1</h2>

4 0

3 years ago

Please help, having trouble. Show all work if you can :) Photo is attached.

Leto [7]

Answer:

hope it helpssssssss youj

4 0

2 years ago

Which algebraic expression has a term with a coefficient of 3?<br>

kirill115 [55]

Answer:

180

Step-by-step explanation:

in Geometry if you want a farewell you need to know the parallel lines they never touch they're always the same distance apart it's as if they don't like each other much and there's only one thing that comes between the line that passes right through each of them called the transversal line it has several angle properties just like these: vertically opposite angles are equal corresponding angles are equal alternate interior angles are equal co-interior angles equal 180* vertically opposite angles are equal corresponding angles are equal alternate interior angles are equal co-interior angles equal 180*

8 0

3 years ago

The life in hours of a biomedical device under development in the laboratory is known to be approximately normally distributed.

Lilit [14]

Answer:

We conclude that the true mean life of a biomedical device is greater than 5200 hours.

Step-by-step explanation:

We are given that the life in hours of a biomedical device under development in the laboratory is known to be approximately normally distributed. For this a random sample of 15 devices is selected and found to have an average life of 5323.8 hours and a sample standard deviation of 220.9 hours.

We have to test that the true mean life of a biomedical device is greater than 5200 or not.

Let, Null Hypothesis, $H_0$ : $\mu \leq$ 5200 {means that the true mean life of a biomedical device is less than or equal to 5200 hours}

Alternate Hypothesis, $H_1$ : $\mu$ > 5200 {means that the true mean life of a biomedical device is greater than 5200 hours}

The test statistics that will be used here is;

T.S. = $\frac{Xbar-\mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, Xbar = sample average life = 5323.8 hours

s = sample standard deviation = 220.9 hours

n = sample devices = 15

So, test statistics = $\frac{5323.8-5200}{\frac{220.9}{\sqrt{15} } }$ ~ $t_1_4$

= 2.171

Since, we are not given with the significance level, so we assume it to be 5%, now the critical value of t at 14 degree of freedom in t table is given as 1.761. Since our test statistics is more than the critical value of t which means our test statistics will lie in the rejection region. So, we have sufficient evidence to reject our null hypothesis.

Therefore, we conclude that the true mean life of a biomedical device is greater than 5200 hours.

8 0

3 years ago

The answer of82.4 - 25​

The answer of82.4 - 25