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dimulka [17.4K]
3 years ago
15

Solve this system 2x-4y=14 3y+5x=9

Mathematics
1 answer:
anygoal [31]3 years ago
8 0

Answer:

x=3, y=-2

Step-by-step explanation:

If 2x-4y=14, then we know that 2x=14+4y.  This means that x=7+2y.  If we substitute this into the next equation we get: 3y+(35+10y)=9.  This means that we have 35+13y=9.  If we subtract 35 from both sides we get 13y=-26.  This means y=-2. If you subsitute this in the first equation, we have 2x--8=14.  -- means + so you do 2x+8=14.  This means that x=3.

btw this is my first answer so sorry if its bad.

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Last one please help meeeee
sergey [27]

Answer: Answer :Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

x

=

3

√

9

45

x

=

9

3

45

Decimal Form:

x

=

0.04622408

…

x

=

0.04622408

I hope this helps friend

Step-by-step explanation:

6 0
3 years ago
The value of y varies directly as the square of x and y=36 when x=3. What is y when x=4?
MissTica

Answer: y = 64

Step-by-step explanation:

y <> x² ----------------------- 1

y = kx² ----------------------- 2

36 = 3²k

36 = 9k

K = 36/9

= 4.

To find y when x = 4, we substitute for x in equation 2

y = kx²

y = 4²k

y = 16 x 4

y = 64

6 0
3 years ago
Can yall help me with 1 to 4 pleasee &lt;33
ludmilkaskok [199]

Answer:

JUST LOOK UP THE FORMULAS FOR THE VOLUME OF A CYLINDER AND PLUG IT IN.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I had 33 pictures from summer camp. I gave three pictures away to friends and I plan to divide the remaining pictures evenly be
suter [353]
33-3=30
30/5=6
There would be 6 pictures on each page
6 0
3 years ago
Read 2 more answers
Please help me find the area of compound shapes?!?!
lorasvet [3.4K]

Answer:

<h3>415 mm</h3>

Step-by-step explanation:

A1=BH

=15mm×7mm

=300mm2

A2=BH

=15mm×5mm

=75mm2

A3=BH

=8mm×5mm

=40mm2

A1+A2+A3=Atotal

300mm2+75mm2+40mm2=Atotal

415mm2=Atotal

5 0
2 years ago
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