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
ValentinkaMS [17]
1 year ago
14

Find 5-(-7). 5-(-7)=5+ Write as addition.

Mathematics
1 answer:
zysi [14]1 year ago
5 0

Answer: The answer is 5+28.

Step-by-step explanation:

First of all, you have to distribute the term in front of the parenthesis into   the term(s) inside of it. In this case, “5-” is not a term because the “-” symbol is following it. However, we can distribute that particular symbol into the parenthesis. We then have 5+ 28 because - x - = +, and 5 x 7 - 5 = 28.

You might be interested in
Bottles of a popular cola drink are supposed to contain 300 ml of cola. There is some variation from bottle to bottle because th
Ksju [112]

Answer:

We conclude that the mean contents of cola bottles is more than or equal to the advertised 300 ml.

Step-by-step explanation:

We are given that Bottles of a popular cola drink are supposed to contain 300 ml of cola. The distribution of the contents is normal with standard deviation of 3 ml.

A student who suspects that the bottler is under-filling measures the contents of six bottles. The results are: 299.4, 297.7, 301.0, 298.9, 300.2, 297.0

<u><em>Let </em></u>\mu<u><em> = mean contents of cola bottles.</em></u>

SO, Null Hypothesis, H_0 : \mu \geq  300 ml   {means that the mean contents of cola bottles is more than or equal to the advertised 300 ml}

Alternate Hypothesis, H_A : \mu < 300 ml   {means that the mean contents of cola bottles is less than the advertised 300 ml}

The test statistics that will be used here is <u>One-sample z test statistics</u> as we know about the population standard deviation;

                       T.S.  = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample mean contents of cola bottle = \frac{\sum X}{n} = 299.03 ml

            \sigma = population standard deviation = 3 ml

            n = sample of bottles = 6

So, <em><u>test statistics</u></em>  =  \frac{299.03-300}{\frac{3}{\sqrt{6} } }     

                               =  -0.792

<em>Now at 5% significance level, the z table gives critical value of -1.6449 for left-tailed test. Since our test statistics is more than the critical value of z as -0.792 > -1.6449, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which we fail to reject our null hypothesis.</em>

Therefore, we conclude that the mean contents of cola bottles is more than or equal to the advertised 300 ml.

8 0
3 years ago
Hector can paint (128
marysya [2.9K]

Answer:

16

Step-by-step explanation:

128/8= 16

8 0
3 years ago
A group of students must collect at least $120 to organize a science fair. They have already collected $30. Which graph best rep
Bezzdna [24]
Number line graph with closed circle on 30 and shading to the right
because you already have 30 dollars and they need at least 120 but if they get more then 120 they can still hold the science fair.
8 0
3 years ago
Read 2 more answers
Can someone help me with this problem<br><br> 7.984 ÷ 1.99
kiruha [24]

Answer: 4.012

Step-by-step explanation: Hope this helps! :)

3 0
3 years ago
Napstablook makes some very amazing spooky tunes
yan [13]

Answer:

? is that the question? is there a link for it or something?

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Evaluate the line integral, where c is the given curve. c y3 ds,<br> c.x = t3, y = t, 0 ≤ t ≤ 4
    9·1 answer
  • Pls help, answer question below. or just explain to me
    5·1 answer
  • What is the area of the figure below? <br> Haaaaalp please
    12·2 answers
  • Plz hurry will mark brainliest
    12·1 answer
  • Reynaldo is making a model of his school building. The actual building is 28
    11·2 answers
  • Mrs. Torres wants to know how many students wear thelr uniforms. In order to gather data, she stands by the front door and recor
    9·1 answer
  • The figures below are similar. The labeled sides are corresponding.
    14·1 answer
  • What is the probability that the second sock is black?
    5·2 answers
  • URGENT I WILL MARK BRAINLIEST DRAW WHERE THE DOTS GO ON THE GRAPH
    12·1 answer
  • A hose fills a pool up at a rate of 15 gallons every 2 hours. At this rate how many
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!