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cricket20 [7]
3 years ago
15

Im stuck between these two, is it correct so far?​

Mathematics
1 answer:
Vlad [161]3 years ago
5 0

Answer:

So far, yes you are correct. The answer would be A.

Step-by-step explanation:

By using the chart, you can plug the x and y values into the given equation. If the equation is true, then you know the point lies on the line.

for example;

y=x-3------> -6=(-3)-3------>-6=-6 (this is true therefore the point (-3,-6) is on the line)

You can go through each point or use process of elimination. The line does not contain (-3,-2), (-2,-42), or (-4,-4), so the other charts cannot be the answer. Hope this helps!

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How do i use doubles to solve
sergey [27]
Can you make the picture clearer
4 0
3 years ago
Using the Elimination method Solve the system:x+y-z=143x+2y+4z=17-x+5y+z=8
lilavasa [31]

Given the system of equations:

x + y - z = 4 eq.(1)

3x + 2y + 4z = 17 eq.(2)

-x + 5y + z = 8 eq.(3)

Add the equations 1 and 3

so,

x + y - z + ( -x + 5y + z ) = 4 + 8

x + y - z - x + 5y + z = 12

6y = 12

y = 12/6 = 2

Substitute with y at eq. (1)

So,

x + 2 - z = 4

x - z = 4 - 2

x - z = 2 eq. (4)

Substitute with y at eq.(2)

3x + 2 * 2 + 4z = 17

3x + 4 + 4z = 17

3x + 4z = 17 - 4

3x + 4z = 13 eq.(5)

solve the equations (4) and (5) together

x - z = 2

3x + 4z = 13

Multiply [ x - z = 2 ] by 4

4x - 4z = 8

3x + 4z = 13

Add the last two equations

4x - 4z + 3x + 4z = 8 + 13

7x = 21

Divide both sides by 7

x = 21/7 = 3

So, x = 3 and y = 2

Substitute with the values of x and y at the equation [ -x + 5y + z = 8 ]

So,

-3 + 5 * 2 + z = 8

solve for z

-3 + 10 + z = 8

z = 8 + 3 - 10

z = 11 - 10 = 1

So,

x = 3 , y = 2 and z = 1

6 0
1 year ago
Someone plz help me on this
ad-work [718]
A. -35
B. +15
C. +3
D. +50
E. +15

A. I am including a picture
B. A
C. B and C

5 0
3 years ago
Factor the algebraic expression<br><br> 18a + 15=
Feliz [49]

18a+15

making a subject of formular

a=18-15

=3

4 0
3 years ago
1) Sandra drinks one and a half litres of water in a day. How many litres of water does she drink in a week?
saw5 [17]

Answer:

1. 10.5 liters

2. 1,500 cups of tea

3. 960 milliliters

4. 1/4 a liter

Step-by-step explanation:

1. If there are 7 days in a week, and she drinks 1.5 liters a day, we just multiply 1.5 (liters) x 7 (days) = 10.5 liters

2. There are 1000 milliliters in 1 liter. Multiply 1.5 liters by 1000 milliliters = 1,500 milliliters

3. If you multiply 800 by 0.2 (20%) you will get 160. Then add 160 + 800 = 960 milliliters

4. If you look at the fraction wall I included, you will see how there are 4/4 in 1 liter, and 2/2 in 1 liter. Half of a liter (1/2) is the same as 2/4. If you were to subtract 3/4 from 2/4, you'd get 1/4 left.

Hope that helps!

3 0
3 years ago
Read 2 more answers
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