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
dimulka [17.4K]
3 years ago
13

Write an equivalent expression for: 5(5x - 9) *

Mathematics
2 answers:
katen-ka-za [31]3 years ago
7 0

Answer:

25x - 45

Step-by-step explanation:

  • 5 ( 5x - 9)

distributing 5 through parantheses

  • 5 × 5x - 5 × 9
  • 25x - 45
gavmur [86]3 years ago
6 0

Answer:

25x - 45

Step-by-step explanation:

You might be interested in
What is the value of 6 / x + 2x squared when x = 3
zavuch27 [327]

Answer:

8

Step-by-step explanation:

The equation will become 6/3+2(3)

-->6/3=2

-->Because of Order of Operation we will multiply the 2 and 3 before adding so 2(3) = 6

--> 6+2=8

6 0
3 years ago
Read 2 more answers
2148552 divide for 49​
evablogger [386]
Answer: 2148552/49 equals to 43,848
6 0
3 years ago
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
Good night girl ill see you tommorow what does he do next
saveliy_v [14]

Answer:

A. Fall

alright girl hahaha!!

7 0
2 years ago
1. What is the fourth term of the<br> sequence 4, 8, 12, 16, 20, 24,
Stells [14]

Answer:

16

Step-by-step explanation:

bruh, it's right there

8 0
3 years ago
Read 2 more answers
Other questions:
  • A tea that is 22% jasmine is blended with a tea that is 13% jasmine. How many pounds of the 22% jasmine tea are used to make 10l
    11·1 answer
  • Mr. jenkins is almost 67 years old and is preparing to retire. Over his life he earned an average of $3,750 per month after adju
    8·1 answer
  • Help me please!!!!!!!!
    13·1 answer
  • 1. Find the slope given the points (-6,7) and (1,8)<br> -1/7<br> 1/7<br> -7/1<br> 7
    5·1 answer
  • Hey all you math geniuses can you help me with this question that should be easy
    8·1 answer
  • The equation y + 6 = one-third (X minus 9) is written in point-slope form. What is the equation written in slope-intercept form?
    13·2 answers
  • Which inequality represents the range of the relation graphed below?
    5·1 answer
  • What is the value of A and B (5x + b)(5x - b) = ax^2 - 49
    8·1 answer
  • The recommended number of flowers to plant in a garden is probational to its area as shown in the table below. What is the recom
    7·1 answer
  • (1 2/7-3/14)/8/15trying to remember how to do this
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!