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Elodia [21]
3 years ago
12

Please answer question correctly 30 POINTS!

Mathematics
1 answer:
Svet_ta [14]3 years ago
5 0

Answer: 3rd option

Step-by-step explanation: The answer would be the third option. Let's go through each one and explain why it's correct or incorrect. First of all, our function is y = x - 3 so we can plug numbers into our X and Y. If we follow the function y = x - 3, we have 8 = 10 - 3 which is incorrect for the first one so that can't be it. For the nest one, we have 13 = 10 - 3 which also does not make sense. For the third one, we have 7 = 10 - 3 which is correct. And the last one, we have 3 = 10 - 2 which is wrong. Therefore, the third option is the answer.

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A-line includes the points (8,9) and (9,1). What is its equation in point-slope form?
sergij07 [2.7K]

Answer:

y-(9)=(-8)(x-8)\\

Step-by-step explanation:

(x_1, y_1) = (8, 9)\\(x_2, y_2) = (9,1)\\

Step one: Find the slope (m)

slope=m=\frac{rise}{run} =\frac{y_2-y_1}{x_2-x_1} = \frac{1-9}{9-8} =\frac{-8}{1} =-8

Step two: Plug your known values into the point-slope equation

m=-8\\y_1=9\\x_1=8\\

Point-slope form is y-y_1=m(x-x_1)

y-(9)=(-8)(x-8)\\

If you want to convert point-slope form to general form, isolate for y.

y-9=-8x+64\\y=-8x+73

4 0
3 years ago
Briana bought 3 bottles of ketchup and 2 bottles of mustard and for $11.85. Logan bought 2 bottles of ketchup and 5 bottles of m
zheka24 [161]
<h2>Answer:</h2><h2>The cost of ketchup bottle, x = 2.89</h2><h2>The cost of mustard bottle, y = 1.59</h2>

Step-by-step explanation:

Let the ketchup be represented as x and mustard as y

Briana  bought 3 bottles of ketchup and 2 bottles of mustard and for $11.85

3x + 2y = 11.85 ...(1)

Logan bought 2 bottles of ketchup and 5 bottles of mustard for $13.73.

2x + 5y = 13.73 ...(2)

Multiplying eq (1) by 2, we get

6x + 4y = 23.7 ...(3)

Multiplying eq (2) by 3, we get

6x + 15y = 41.19 ...(4)

Subtracting eq (3) from (4),

we get 11y = 17.49

y = 1.59, substitute it in eq(1), we get

x = 2.89

Therefore, the cost of ketchup bottle, x = 2.89

The cost of mustard bottle, y = 1.59

3 0
3 years ago
3x-5y=60<br> 4x+5y=-4<br> what is the system of linear equation
Sergeu [11.5K]

(3x-5y=60)

4x+5y=-4

3(8)-5(7.2)=60

4(8)+5(-7.2)=-4

7x=56

÷7. ÷7

x=8

3(8)-5y=60

4(8)+5y=-4

32+5y=-4

-32. -32

5y=-36

÷5. ÷5

y=7.2

4 0
3 years ago
9 + 10 = 21 PLSSSSSSSSSSSSS
stellarik [79]

Answer:

9 + 10 +x= 21

x=21-19

x=2

add 2 in left hand side to get 21

6 0
3 years ago
Read 2 more answers
4/5% of 500 rounded to the nearest hundreds
ra1l [238]

Answer:

I am not quite sure what you are asking so i will give you the answer for 4.5% and 45%.

4.5% of 500= The answer i got for this one is 4 so i am assuming you mean 45.

45% of 500= 225 but rounded would be 200

Step-by-step explanation:

3 0
3 years ago
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