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Lapatulllka [165]
3 years ago
15

3x-9=23-5x what is these?

Mathematics
2 answers:
Bas_tet [7]3 years ago
7 0
Hope this helps you..!!!

Anvisha [2.4K]3 years ago
6 0

3x - 9 = 23 - 5x

Note the equal sign. What you do to one side, you do to the other.

Isolate the x. First Add 5x to both sides, and add 9

3x (+5x) - 9 (+9) = 23 (+9) - 5x (+5x)

3x + 5x = 23 + 9

Combine like terms

8x = 32

Simplify. Isolate the x. Divide 8 from both sides

8x/8 = 32/8

x = 32/8

x = 4

4 is your answer for x.

hope this helps

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Can someone answer this for me please show every steps for it
VMariaS [17]

Answer:

x1=8 x2=-8

Step-by-step explanation:

since there is absolute , means any number inside that has negative value will become positive. so the answer is -8 and 8

sorry late reply :(

4 0
3 years ago
What polynomial identity should be used to prove that 35 = 8 + 27
Julli [10]

Answer:

Sum of cubes identity should be used to prove 35 =3+27

Step-by-step explanation:

Prove that : 35 = 8 +27

Polynomial identities are just equations that are true, but identities are particularly useful for showing the relationship between two apparently unrelated expressions.

Sum of the cubes identity:

a^3+b^3=(a+b)(a^2-ab+b^2)

Take RHS

8+ 27

We can write 8 as 2 \times 2 \times 2 = 2^3 and 27 as 3 \times 3 \times 3 = 3^3.

then;

8+27 = 2^3+3^3

Now, use the sum of cubes identity;

here a =2 and b = 3

2^3+3^3 = (2+3)(2^2-2\cdot 3+3^2)

or

2^3+3^3 = (5)(4-6+9) = 5 \cdot 7 = 35 = LHS    proved!

therefore, the Sum of cubes polynomial identity should be used to prove that 35 = 8 +27

4 0
3 years ago
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If a jet is moving at 178 mph, then how far will the jet move in 3 hours
antiseptic1488 [7]
The jet will move 534 MPH in 3 hours
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Phong is rolling a number cube and flipping a coin .what is the probability that the cube will land on 4 and the coin will land
Grace [21]
Probabblity that the cube lands on 4 = 1/6
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3 0
4 years ago
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Yuliya22 [10]

Answer:

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(may I ask why exactly this is put as a college level problem?)

4 0
3 years ago
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