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
alisha [4.7K]
2 years ago
13

Which image shows 1/2÷4? A or B

Mathematics
2 answers:
kati45 [8]2 years ago
8 0

Answer:

Step-by-step explanation:

Notice that 1/2 divided by 4 is 1/8.  Graph A represents this.

krok68 [10]2 years ago
3 0

Answer:

I think it should be A

Step-by-step explanation:

because of the four boxes before half but I stand to be corrected

You might be interested in
At a NASCAR racetrack, the distance per lap is 2 miles. Lou Lambert drives his car at a constant rate of 160 miles per hour. Ral
Nezavi [6.7K]

Answer:

<em>24 minutes</em>

<em></em>

Step-by-step explanation:

Given:

Distance per lap = 2 miles

Speed of Lou Lambert = 160 miles/hr

Speed of Ralph Redding = 170 miles/hr

Speed difference between the two = 170 - 160 = 10 miles/hr

Therefore, we can say that <em>Ralph gains 10 miles in 60 minutes </em>over Lou<em>.</em>

We have to find the time in which Ralph will gain 2 laps i.e. 2 \times 2 = 4 miles.

Let us use unitary method to find the required time.

10 miles are gained by Ralph in 60 minutes

1 mile will be gained in \frac{60}{10} = 6\ minutes

4 miles will be gained in 6 \times 4 = <em>24 minutes</em>

7 0
3 years ago
If ΔRED ≅ ΔTAN, then which of the following statements is not true? RE ≅ TA ∠E ≅ ∠A RD≅ TA ∠D ≅ ∠N
Assoli18 [71]

Answer:

RD≅ TA

Step-by-step explanation:

RD≅ TA is not true statement as they are not corresponding sides.

4 0
3 years ago
In each triangle below, name the type of line segment that CD is.
bulgar [2K]
There is no picture?
4 0
2 years ago
GRE Test: The Graduate Record Examination (GRE) is a test required for admission to many US graduate schools. Student’s scores o
Zepler [3.9K]

Answer:

a) \bar X=144.3

b) The 95% confidence interval would be given by (138.846;149.754)      

c) n=34

d) n=298

e) n=1190

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

We can calculate the sample mean with this formula:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

\bar X=144.3 represent the sample mean  

\mu population mean (variable of interest)

\sigma=8.8 represent the population standard deviation

n=10 represent the sample size  

a) Find a point estimate of the population mean

We can calculate the sample mean with this formula:

\bar X = \frac{\sum_{i=1}^n x_i}{n}

\bar X=144.3

b) Construct a 95% confidence interval for the true mean score for this population.

The confidence interval for the mean is given by the following formula:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

Since the Confidence is 0.95 or 95%, the value of \alpha=0.05 and \alpha/2 =0.025, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.025,0,1)".And we see that t_{\alpha/2}=1.96

Now we have everything in order to replace into formula (1):

144.3-1.96\frac{8.8}{\sqrt{10}}=138.846    

144.3+1.96\frac{8.8}{\sqrt{10}}=149.754

So on this case the 95% confidence interval would be given by (138.846;149.754)    

Part c

The margin of error is given by this formula:

ME=z_{\alpha/2}\frac{\sigma}{\sqrt{n}}    (a)

And on this case we have that ME =+20 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{z_{\alpha/2} \sigma}{ME})^2   (b)

The critical value for 95% of confidence interval now can be founded using the normal distribution. And in excel we can use this formla to find it:"=-NORM.INV(0.025;0;1)", and we got z_{\alpha/2}=1.960, replacing into formula (5) we got:

n=(\frac{1.960(8.8)}{3})^2 =33.05 \approx 34

So the answer for this case would be n=34 rounded up to the nearest integer

Part d

n=(\frac{1.960(8.8)}{1})^2 =297.493 \approx 298

So the answer for this case would be n=298 rounded up to the nearest integer

Part e

n=(\frac{1.960(8.8)}{0.5})^2 =1189.97 \approx 1190

So the answer for this case would be n=1190 rounded up to the nearest integer

7 0
3 years ago
Please help I don't understand!
Diano4ka-milaya [45]

Answer:

25

Step-by-step explanation:

As the triangles within the bigger triangle are similar, the sides are in proportion.

⇒ \frac{18}{30} = \frac{15}{w}

⇒ \frac{3}{5} = \frac{15}{w}

⇒ 3w = 75

⇒ w = 25

7 0
2 years ago
Read 2 more answers
Other questions:
  • If you deposit $800 in a savings account that earns simple interest at a pate of 1.5% per year, how much interest will you have
    14·1 answer
  • Break apart strategy for 518+372=
    8·1 answer
  • Which of the graphs below correctly solves for x in the equation −x2 − 3x − 1 = −x − 4?
    8·2 answers
  • Suppose $7,000 is deposited in an account paying 2% interest per year compounded monthly. Find the amount in the account after 2
    10·1 answer
  • An Italian restaurant offers small, medium and large calzones. The choices of filings are cheese, sausage, spinach, or vegetable
    7·1 answer
  • Which is more 3 days for 72 hours​
    12·2 answers
  • What is the domain and range of Y=3X-7.25? can someone please help?
    14·1 answer
  • 25 points!!! I would really appreciate the help, please!!! I'll give Brainliest if you show your work, including the points that
    8·1 answer
  • Please help if you know geometry I will mark brainliest
    13·1 answer
  • Mark cast a shadow that is 4 feet long. At the same time, a nearby tree casts a shadow that is 20 feet long. If mark is 6 feet t
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!