1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shusha [124]
3 years ago
9

Can someone help me with this?

Mathematics
1 answer:
garri49 [273]3 years ago
4 0
The answer going to be -4
You might be interested in
What is the effect on the graph of the function f(x) = |x| when f(x) is changed to f(x + 9)?
babymother [125]
The answer is A) shifts right by 9 units


3 0
3 years ago
Read 2 more answers
What's the simplified form of 2x + 3 – X + 5?<br> A.X-2<br> B.X-8<br> C. x+8<br> D. 3x + 8
allochka39001 [22]

Answer:

C

Step-by-step explanation:

Group like terms

= 2x - x +3 +5

Add the similar 'elements'

= x + 3 + 5

Add the numbers

3 + 5 = 8 + x

= x+8

8 0
3 years ago
Write an expression for the sum of four consecutive odd integers where 2n +1 represents the smallest odd integer.
7nadin3 [17]
8n+16
the four odd numbers are 2n+1, 2n+3, 2n+5, 2n+7
2n+1+2n+3+2n+5+2n+7=8n+16
5 0
3 years ago
Can someone help me with this question
valentina_108 [34]
Answer:
B

————-

I’m not 100% sure though
3 0
3 years ago
Read 2 more answers
An article describes an experiment to determine the effectiveness of mushroom compost in removing petroleum contaminants from so
alexgriva [62]

Solution :

Let p_1 and p_2  represents the proportions of the seeds which germinate among the seeds planted in the soil containing 3\% and 5\% mushroom compost by weight respectively.

To test the null hypothesis H_0: p_1=p_2 against the alternate hypothesis  H_1:p_1 \neq p_2 .

Let \hat p_1, \hat p_2 denotes the respective sample proportions and the n_1, n_2 represents the sample size respectively.

$\hat p_1 = \frac{74}{155} = 0.477419

n_1=155

$p_2=\frac{86}{155}=0.554839

n_2=155

The test statistic can be written as :

$z=\frac{(\hat p_1 - \hat p_2)}{\sqrt{\frac{\hat p_1 \times (1-\hat p_1)}{n_1}} + \frac{\hat p_2 \times (1-\hat p_2)}{n_2}}}

which under H_0  follows the standard normal distribution.

We reject H_0 at 0.05 level of significance, if the P-value or if |z_{obs}|>Z_{0.025}

Now, the value of the test statistics = -1.368928

The critical value = \pm 1.959964

P-value = $P(|z|> z_{obs})= 2 \times P(z< -1.367928)$

                                     $=2 \times 0.085667$

                                     = 0.171335

Since the p-value > 0.05 and $|z_{obs}| \ngtr z_{critical} = 1.959964$, so we fail to reject H_0 at 0.05 level of significance.

Hence we conclude that the two population proportion are not significantly different.

Conclusion :

There is not sufficient evidence to conclude that the \text{proportion} of the seeds that \text{germinate differs} with the percent of the \text{mushroom compost} in the soil.

8 0
3 years ago
Other questions:
  • Will earned 750 per week if he earns 20 per hour how many hours did he work?
    10·2 answers
  • A river is flowing at the speed of 2 miles per hour. A kayaker moves 528 feet upstream in 20 minutes. At this rate, how fast wou
    12·1 answer
  • Write and solve an inequality for x.
    9·2 answers
  • Madeline was completing the square, and her work is shown below. Identify the line where she made her mistake. f(x) = 3x2 + 6x −
    8·2 answers
  • 15 &lt; −5x can someone please solve for x?
    7·2 answers
  • Who painted the larger fraction of their ceiling?
    5·1 answer
  • 9
    9·1 answer
  • Convert 0.00049 to scientific notation.
    7·2 answers
  • Factor 21a–27.
    15·2 answers
  • Find all solutions of the equation in the interval [0, 2pi).<br> (2sinx-sqrt2)(3cscx-2sqrt3) = 0
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!