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Aleks [24]
3 years ago
10

Solve the system by subtitution y = 3x + 18 y = 5x

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
3 0

Answer:

x=9

Step-by-step explanation:

y=3x+18=5x

thus 3x+18=5x

subtract 3x from both sides     18=2x

simplify for x       x=9

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HURRYYY!!!
Tema [17]
The last two.

They are equivalent

3+3=6 6•4=24

4•3=12 12+12 is 24
7 0
3 years ago
Which of the following represents the general equation for the geometric sequence?
anygoal [31]
I think that it would be (x times 2)
8 0
3 years ago
Triangle VXW is similar to triangle ZXY. Triangle V X W. Side V W is 12 miles and side V X is 14 miles. Triangle Z X Y. Side Y Z
amid [387]

Answer: Kara should have written the proportion in step 1 as;

Start Fraction 12 Over 72 End Fraction = Start Fraction 14 Over x End Fraction (that is 12/72 = 14/x)

Step-by-step explanation: The two similar triangles are given with the following dimensions;

Triangle VXW with side VW = 12 and side VX = 14. Also Triangle ZXY with side YZ = 72 and side XZ = x.

For two triangles to be similar, then there must be a similarity ration that is consistent with all sides in both triangles. This means if in the first triangle a side measures  1 unit and the similar side in the other triangle measures 5 units, then the ratio of similarity of corresponding sides shall be ratio 1 : 5. So for every corresponding side in the second triangle the measurement shall be times five of the side that corresponds in the first triangle.

Therefore, in triangle VXW and triangle ZXY, the corresponding sides are as follows;

VX = ZX

VW = ZY

XW = XY

What Kara did was as follows;

VX/ZY = VW/ZX

Which translates to 14/72 = 12/x

This was a wrong calculation because the side that corresponds to VX is ZX and not ZY.

The correct step should therefore have been;

VW/ZY = VX/ZX

12/72 = 14/x (Step 1)

12x = (72) (14) {Step 2}

x = 1008/12 (Step 3)

x = 84 (Step 4)

5 0
3 years ago
Read 2 more answers
What is the simplified form of the following expression? Assume a greater-than-or-equal-to 0 and c greater-than-or-equal-to 0
Setler [38]

Answer:

A. 7ac(^4sqrt. ab^2)

Step-by-step explanation:

just took the quiz on edg.

3 0
3 years ago
Which ratio is the same as 2/3?
kompoz [17]

Answer:

6:15 6 to 15 it's the same o

7 0
3 years ago
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