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kvv77 [185]
3 years ago
10

What are four equivalent expressions for 42+18

Mathematics
1 answer:
Pavel [41]3 years ago
5 0
21+21+9+9=
2(9+21)=
Hope this helps
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Solving Systems of Linear Equations by graphing. 3y+4x=3 and x+3y=-6. Can someone help me with where the lines intersect and sho
Greeley [361]
The best way to do this question is to use elimination. Elimination is a way to find out the POINT OF INTERSECTION between two lines. Let me show you how.

3y+4x=3
x+3y=-6

Elimination is a way to remove any same variable with the same coefficient. In this case, there is 3y in both equations. In this case, we subtract to eliminate.

3y-3y+4x-x=3+6  It's plus 6 because two negatives become positive.
3x=9  Divide both sides by 3
x=3

Now you can find y.

x+3y=-6
3+3y=-6
3y=-9
y=-3

Therefore, the POI is (3,-3). I hope you understand this. Make sure to mark as brainliest.
8 0
3 years ago
Select each type of special quadrilateral that can meet the given condition.
nadya68 [22]

Step-by-step explanation:

To find quadrilateral's you need to find shapes with edges.

<h2>Quadrilateral's:</h2>

Square

Rectangle

Isosceles Trapezoid

8 0
3 years ago
If a group of freind go on a 60km hike. They have 6 days to complete the hike
Over [174]
One sixth of 60km would be 10km.
8 0
3 years ago
Find the distance between the two points.<br> (-1, -3), (1, 3)
allsm [11]

Answer:

d = 6.324555

Step-by-step explanation:

d=√1−(−1))^2+(3−(−3))^2

d=√(2)^2+(6)^2

d=√4+36

d=√40

d=6.324555

D=Distance*

4 0
3 years ago
Read 2 more answers
jake has been asked to mow his grandparent's yard. It is a large yard at 1.2 acres. He is trying to figure out how much time it
goldfiish [28.3K]
There are 4840 yards in an acre and the area of Jake's parents yard is 960. Knowing this, multiply 4840 by 1.2 to determine how many yards are in his grandparents yard, which is 5808 yards. Next, divide 5808 by 960. You will get 6.05.
It will take Jake 6 1/2 or 6.5 hours to mow his grandparents yard.
4 0
3 years ago
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