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
Svetradugi [14.3K]
3 years ago
13

Hi can someone please help me I need help please help me thank you

Mathematics
2 answers:
grandymaker [24]3 years ago
6 0

Answer:

The lines are reflections of each other.

Step-by-step explanation:

The slope of the first line is 2/5.

The slope of the second one is -2/5.

The lines are reflections of each other.

erica [24]3 years ago
5 0

Answer:

the lines are perpendicular

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

x - 2y + 8 = 0 ( subtract x + 8 from both sides )

- 2y = - x - 8 ( divide all terms by - 2 )

y = \frac{1}{2} x + 4 ← in slope- intercept form

with slope m = \frac{1}{2}

Given also

2x + y + 1 = 0 ( subtract 2x + 1 from both sides )

y = - 2x - 1 ← in slope- intercept form

with slope m = - 2

Parallel lines have equal slopes

The slopes are not equal thus the lines are not parallel.

For lines to be perpendicular the product of their slopes = - 1

\frac{1}{2} × - 2 = -1

Thus the 2 lines are perpendicular.

You might be interested in
PLEASE HELP
elixir [45]

Answer:

Ratio states that it shows the relative sizes of two or more values.

i,e a to b or a: b or \frac{a}{b}

(1)

Given the statement: A zoo has 17 monkeys and 12 chimpanzees

Write this situation in three ways, comparing the first quantity to the second quantity.

By definition of ratio:

Ratio in three ways are:

17 to 12

17 : 12

\frac{17}{12} or we can write this as 17 over 12.

therefore, Option B is correct.

(2)

As per the statement: In Largo City, about one in every nine homes contains four televisions

Write this situation in three ways in the form of ratio, comparing the first quantity to the second quantity.

By definition of ratio:

Ratio in three ways are:

4 to 9

4 : 9

\frac{4}{9}

therefore, only options C is correct.

(3)

write three ratios for 7 over 35

By definition of ratio;

We have;

\frac{7}{35}

Divide both numerator and denominator by 7 we have;

\frac{1}{5}               .....[A]

⇒ \frac{7}{35} =\frac{1}{5}

Multiply both numerator and denominator by 2 in A we get;

\frac{1}{5} = \frac{1 \times 2}{5 \times 2} = \frac{1}{10}

Similarly,

Multiply both numerator and denominator by 3 in A, we get

\frac{1}{5} = \frac{1 \times 3}{5 \times 3} = \frac{3}{15}

Therefore, 3 ratios equal to  7 over 35 are;

\frac{1}{5} or we can write it as one-fifth

\frac{2}{10} or two -tenths

\frac{3}{15} or three over fifteen

hence, Option D is correct.

(4)

Given the statement: Jake sold 28 tickets to the school fair, and Jeanne sold 21 tickets

Number of ticket Jake sold = 28 ticket.

Number of ticket Jeanne sold = 21 ticket.

To find: Number of ticket Jeanne sold to number of ticket Jake sold.

By definition of ratio

⇒\frac{21}{28}

Therefore, the ratio in simplest form is, \frac{21}{28}


6 0
3 years ago
Read 2 more answers
What is 250/100 as a whole number?
Tpy6a [65]

Answer:

Unless im being completely braindead right now there isn't a whole number that works with this. When simplified its 5/2 or 2.5 but because it isn't an actual whole number (like 2, 4 and 6) they don't count.

7 0
2 years ago
Read 2 more answers
Here are 10 test scores: 30, 74, 76, 77, 78, 79, 80, 80, 82, 84. The mean of these scores is 74.
creativ13 [48]
We add up all those numbers (excluding 30) and divide by the number of numbers (9). This results in 78.8 (round up to 79).

79-74 = 5. So the mean has increased by 5 points. (C)
8 0
3 years ago
Walter has 1/4 of a yard of string. He used 3/5 of it on a school project. How much string did he use?
zalisa [80]

Answer:

3/20 or .15

Step-by-step explanation:

You need to find 3/5 of 1/4, so you need to multiply

3/5*1/4= 3/20

3/20 or .15

3 0
3 years ago
A store had 25%off sale on coats with this discount
AleksandrR [38]
Okay so if the price of an original coat was 100 dollars they would become 75 dollars
5 0
3 years ago
Other questions:
  • A video game randomly chooses your car color and type. The probability of getting a red car is 0.25, and the probability of gett
    12·2 answers
  • Write 2,046,708 in words​
    10·2 answers
  • The Vilas County News earns a profit of $20 per year for each of its 3,000 subscribers. Management projects that the profit per
    6·1 answer
  • Triangle JKL is transformed by performing a 90degree clockwise rotation about the origin and then a reflection over the y-axis,
    5·1 answer
  • Find the measure of arc BEF.
    12·1 answer
  • In a normal distribution, a data value located 0.8 standard deviations below the mean has Standard Score: z =
    6·1 answer
  • The owner of a bookstore ordered 75 copies of a book and paid $1,350. The owner of another bookstore also ordered the same book
    6·1 answer
  • If you make a circle and one part is 100 the other part is 120 what is the other part​
    6·1 answer
  • Solve each system by substitution. Show your work.
    13·1 answer
  • Questions, are all in picture, please solve
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!