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
777dan777 [17]
3 years ago
10

1. Tell whether the line containing (-1,-2) and (4,4) and the line containing

Mathematics
1 answer:
AveGali [126]3 years ago
7 0

Step-by-step explanation:

Two lines are parallel if they have the same slope.

To find the slope of the line that passes through two points, (x_{1}, y_{1}) and (x_{2}, y_{2}), you can use the following formula:

\frac{y_{2} - y_{1}}{x_{2} - x_{1}}

For the first set of points, (-1, -2) and (4, 4), we can find the slope with the following:

\frac{4 - (-2)}{4 - (1)}

\frac{4 + 2}{4 + 1}

\frac{6}{5}

For the second set of points, (6, 3) and (-1, -3), we can find the slope with the following:

\frac{-3 - 3}{-1 - 6}

\frac{-6}{-7}

\frac{6}{7}

Since the two slopes are \frac{6}{5} and \frac{6}{7}, the two lines are not parallel.

You might be interested in
Thomas Vega offers to pay $59 of the March cell phone bill. Each of the other 4 members of the family agrees to split the rest o
bija089 [108]
59×2=118 cost of bill.
59÷4=14.75 for the other 4 if the bill was 118 assuming Thomas pays half.

or...59 ×5=295
assuming they all pd 1/5 of the bill
6 0
3 years ago
Instead of A = bh to find the area of a square ​
Lady_Fox [76]

Answer:

area of a square = side x side

Step-by-step explanation:

3 0
3 years ago
The U.S. Census Bureau conducts a study to determine the time needed to complete the short form. The Bureau surveys 200 people.
NISA [10]

Answer:

8.2-2.58\frac{2.2}{\sqrt{18}}=6.86    

8.2+2.58\frac{2.2}{\sqrt{18}}=9.54    

So on this case the 90% confidence interval would be given by (6.86;9.54)    And the error is given by:

ME= 2.58\frac{2.2}{\sqrt{18}} =1.338

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".

\bar X=8.2 represent the sample mean for the sample  

\mu population mean (variable of interest)

\sigma=2.2 represent the population standard deviation

n represent the sample size  

Solution to the problem

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 0.90 or 90%, the value of \alpha=0.1 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.005,0,1)".And we see that z_{\alpha/2}=2.58

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

8.2-2.58\frac{2.2}{\sqrt{18}}=6.86    

8.2+2.58\frac{2.2}{\sqrt{18}}=9.54    

So on this case the 90% confidence interval would be given by (6.86;9.54)    And the error is given by:

ME= 2.58\frac{2.2}{\sqrt{18}} =1.338

8 0
3 years ago
Read 2 more answers
Help me out please this is my sister's lol
nalin [4]

It's nice to help your sister.

a) 9711 rounds to 10000

b) 6549 rounds to 7000

c) 25499 rounds to 25000

d) 979501 rounds to 980000


5 0
3 years ago
What percent of 56 is 14?
Marysya12 [62]

Answer:

25 percent

Step-by-step explanation:

Of means multiply and is means equals

P * 56 = 14

Divide each side by 56

P = 14/56

P = .25

To change to a percent, multiply by 100

P = 25 percent

4 0
3 years ago
Read 2 more answers
Other questions:
  • A prize fund is setup with a single investment of £4000 to provide an annual prize of £150. The fund accrues interest at 5% p.A.
    6·1 answer
  • Points $D$, $E$, and $F$ are the midpoints of sides $\overline{BC}$, $\overline{CA}$, and $\overline{AB}$ of $\triangle ABC$, re
    13·2 answers
  • The line legment has the length of 36 cm. It was divided into four unequal parts. If the distance between the midpoints of the f
    7·1 answer
  • I purchase x pizzas, y 12-packs of soda, and z cupcakes for a party. If each pizza costs $7.50, each 12-packs of soda costs $3.2
    7·1 answer
  • Find the slope and y-intercept of 3y - 4x = 39
    11·2 answers
  • If the perimeters of each shape are equal, which equation can be used to find the value of x? A triangle with base x + 2, height
    12·1 answer
  • Given the following: P(A) =0.3 P(B) = 0.2 P(A OR B) = 0.5 P(A AND B) = 0 Which of the following is true?a. A and B are disjoint.
    15·1 answer
  • Help plzzzzzzzzzzzzz
    8·2 answers
  • Can someone please help me with this
    13·1 answer
  • Sreya bought shoes for $37.57 and x pairs of socks for $1.95 each. Which expression shows the total money spent?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!