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marshall27 [118]
3 years ago
7

Help plzzz real quick on this

Mathematics
2 answers:
AysviL [449]3 years ago
7 0
The parallel lines have the same slope. So we should check the slope from all the options. We will use formula
m = (y₂ - y₁) / (x₂ - x₁)

First Option
(x₁,y₁) = (-8,8)
(x₂,y₂) = (2,2)
Find the slope (m)
m = (y₂ - y₁) / (x₂ - x₁)
m = (2 - 8)/(2 + 8)
m = -6/10
m = -3/5
It has the same slope of -3/5, so it's parallel with the line.

Second Option
(x₁,y₁) = (-5,-1)
(x₂,y₂) = (0,2)
Find the slope (m)
m = (y₂ - y₁) / (x₂ - x₁)
m = (2 + 1) / (0 + 5)
m = 3/5
It doesn't have the same slope, so it's not parallel with the line.

Third Option
(x₁,y₁) = (-3,6)
(x₂,y₂) = (6,-9)
Find the slope (m)
m = (y₂ - y₁) / (x₂ - x₁)
m = (-9 - 6) / (6 + 3)
m = -15/9
m = -5/3
It doesn't have the same slope, so it's not parallel with the line

Fourth Option
(x₁,y₁) = (-2,1)
(x₂,y₂) = (3,-2)
Find the slope (m)
m = (y₂ - y₁) / (x₂ - x₁)
m = (-2 - 1) / (3 + 2)
m = -3/5
It has the same slope of -3/5, so it's parallel with the line.

Fifth Option
(x₁,y₁) = (0,2)
(x₂,y₂) = (5,5)
Find the slope (m)
m = (y₂ - y₁) / (x₂ - x₁)
m = (5 - 2) / (5 - 0)
m = 3/5
It doesn't have the same slope, so it's not parallel with the line.

SUMMARY
The parallel lines are first option and fourth option
Darina [25.2K]3 years ago
3 0
1 and 4. Please give brainliest!
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Sally has 4 apples for school lunch, her friend asks if she can 2 apples for Sally's 4 apples. How many more apple would Sally h
vladimir1956 [14]

Answer:Sally would have 2 apples left

Step-by-step explanation:Because 4-2=2 so she gave 2 away so she has 2 left.

5 0
3 years ago
I need to show work and Idk how for 2 or 3. The -5,-2 and 8,3 is the answers just need work shown thanks
prisoha [69]
#2
2x - 4y = -2
2x + 3y = -16
------------------subtract
-7y = 14
y = 14/-7
y = -2

2x - 4y = -2
2x - 4(-2) = -2
2x + 8 = -2
2x = -2 -8
2x = -10
x = -10/2
x = -5
answer x = -2 and y = -5

check:

2(-5)- 4(-2) = -2
-10 +8 = -2
-2 = -2.....true

2x + 3y = -16
2(-5)+3(-2) = -16
-10 + (-6) = -16
-16 = -16...true


3 0
3 years ago
-7 2/3 + (-5 1/3) + 8 3/4=?<br> A: 6 7/12<br> B: -4 5/12<br> C: -21 11/12<br> D: 4 2/3
balandron [24]

Its B

Hope this helps!

May I have brainliest please? :D

4 0
3 years ago
Read 2 more answers
Can someone please help me<br> Please answer it right
Likurg_2 [28]

Answer:

25 more inches

Step-by-step explanation:

3 0
3 years ago
(a) How would you characterize the relationship between money spent on advertising and items sold?
Mashcka [7]

Answer:

a) Positive Correlation

b) 69.5

c) Base advertisement fee    

Step-by-step explanation:

a) Relationship between money spent on advertising and items sold

If we spent greater amount of money on advertisement, thus, we create more awareness and thus, the number of item sold increases.

Similarly, if less money is spent on advertisement, the number of items sold will be less.

Thus, the money spent on advertisement varies directly with the number of items sold.

Thus, they have a positive relationship or a positive correlation.

b) Money spent in advertising to sell 30 items

We are given the function:

y= 1.6x+ 21.5

We put x = 30

y(30)= 1.6(30)+ 21.5\\y(30) = 69.5

Thus, the score predicted by model is 69.5 units.

c) Interpretation of 21.5

Comparing the equation to a general linear equation, we get

y = mx + c

where m is the slope and c is the y-intercept.

y-intercept tells us the value of function when x is zero.

Thus, for the given scenario it will tell about the basic advertisement fee to be paid if we want to sell 0 products.

Comparing we get,

c  = 21.5

Interpretation:

Thus, 21.5 units is the basic amount of advertisement fee that needed to be paid( the number of items sold is 0)

8 0
3 years ago
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