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kolbaska11 [484]
3 years ago
9

-5+7=7-5 is what property

Mathematics
2 answers:
Ira Lisetskai [31]3 years ago
8 0

Answer:

commutative

Step-by-step explanation:

rjkz [21]3 years ago
5 0

Answer:

Commutative. The property about moving numbers around

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14-12x+39x-18x=256-60x-657x​
emmasim [6.3K]

Answer:

\boxed{\bold{x=\frac{1}{3}}}

Step-by-step explanation:

Combine Similar Elements: \bold{-12x+39x-18x=9x}

\bold{14+9x=256-60x-657x}

Combine Similar Elements: \bold{-60x-657x=-717x}

\bold{14+9x=256-717x}

Subtract 14 From Both Sides

\bold{14+9x-14=256-717x-14}

Simplify

\bold{9x=-717x+242}

Add \bold{717x} To Both Sides

\bold{9x+717x=-717x+242+717x}

Simplify

\bold{726x=242}

Divide Both Sides By \bold{726}

\bold{\frac{726x}{726}=\frac{242}{726}}

Simplify

\bold{x=\frac{1}{3}}

4 0
3 years ago
A 10 foot ladder is leaning against a building. It forms a 30 degree angle with the ground. How far away from the building is th
anastassius [24]

x = 8.66 ft

Step-by-step explanation:

cos 30 = adj/hyp = x/10

---> x = (10 ft)cos30

= 8.66 ft

5 0
2 years ago
Write a complete two-column proof for the following information given
rosijanka [135]

   <u>Statement </u>                  <u>Reason</u>        

1. AB = x + 16                 1. Given

  BC = 4x + 11

   AC = 77

2. AB + BC = AC             2. Segment Addition Postulate

3. x + 16 + 4x + 11 = 77     3. Substitution Property

4. 5x + 27 = 77                 4. Simplification <em>(added like terms)</em>

5. 5x = 50                         5. Subtraction Property of Equality

6. x = 10                             6. Division Property of Equality

7. AB = 10 + 16                   7. Substitution Property

8. AB = 26                          8. Simplification <em>(added like terms)</em>

5 0
3 years ago
Please help, will mark Brainly and if you need help with anything I’ll help with any work you send
inessss [21]

Answer:

The first one is missing (d - 9) so it would be 5(d -9) or when you factor it out 5d - 45

In the second one (d + 7) is missing so it will be 8d(d + 7) so if you factor that out you will receive 8d^2 + 56

Step-by-step explanation:

3d^2 + 18d -21 =(3d -3)( d + 7)

3d^2 -30d +27 =(3d -3)(d - 9)

6 0
3 years ago
Which property of equality is used in solving x + 8 = 9?
stiv31 [10]

Answer:

Subtraction Property of Equality.

Step-by-step explanation:

To solve x + 8 = 9, you need to subtract 8 from both sides of the equation. So, you would be using the Subtraction Property of Equality.

Hope this helps!

8 0
3 years ago
Read 2 more answers
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