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3 years ago

Which is the simplified version of 7x+12+3x=-6(x-7)+9x ?

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

8 0

Answer:

x=30/7

Step-by-step explanation:

7x+12+3x=-6(x-7)+9x

10x+12=-6x+42+9x

10x+12=3x+42

10x-3x+12=42

7x+12=42

7x=42-12

7x=30

x=30/7

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adelina 88 [10]

Answer:

3.81

Step-by-step explanation:

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3 years ago

PLEASE HELP ME!! I DO NOT UNDERSTAND PLEASE SHOW WORK THANK YOU!!

Oksanka [162]

Answer:

= 10x² + 9x³

Step-by-step explanation:

I'm assuming you mean question 19

3x² + 5x³ + 7x² + 4x³ (rearrange to group like terms)

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3 years ago

I need help with geometry. Find x.

I am Lyosha [343]

Answer:

Part 9) $x=5$

Part 10) $x=-9$

Step-by-step explanation:

we know that

The Midpoint Theorem states that: The segment joining two sides of a triangle at the midpoints of those sides is parallel to the third side and is half the length of the third side

Part 9) we know that

Point Q is the midpoint segment XY (QY=QX)

Point R is the midpoint segment XW (RW=RX)

Applying the Midpoint Theorem

RQ is parallel to WY

and

$RQ=\frac{1}{2}WY$

we have

$RQ=2x-3\\WY=x+9$

substitute

$2x-3=\frac{1}{2}(x+9)$

solve for x

$4x-6=(x+9)$

$4x-x=9+6$

$3x=15$

$x=5$

Part 10) we know that

Point B is the midpoint segment TS (BS=BT)

Point C is the midpoint segment RS (CS=CR)

Applying the Midpoint Theorem

BC is parallel to TR

and

$BC=\frac{1}{2}TR$

we have

$BC=x+19\\TR=x+29$

substitute

$x+19=\frac{1}{2}(x+29)$

solve for x

$2x+38=(x+29)$

$2x-x=29-38$

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3 years ago

Olivia and her 2 friends are sharing gallons of paint for their rooms. They have the same size room and therefore want to split

pickupchik [31]

Answer:

1 gallon

Step-by-step explanation:

1 gallon because they are sharing the equally

3 0

3 years ago

Hi. How are ya to day

Thepotemich [5.8K]

Answer:

good and what about you .

thanks 4 the 5 points . : )

4 0

3 years ago