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Anna [14]
2 years ago
14

Simplify 4 + (-3) - 2 times (-6)

Mathematics
2 answers:
iVinArrow [24]2 years ago
8 0

Step-by-step explanation:

= 4 + ( - 3) - 2 ( -  6)

here ( + ) × ( - ) = ( - )

= 4 - 3 + 12

= 4 + 12 - 3

= 16 - 3

= 13

kolezko [41]2 years ago
8 0

The correct result of this simplification is 13

To solve this question, we'll just <u>apply the rule of signs</u> - and then we'll calculate the operations.

- In the sign rule - when both signs are equal, the <u>result will be positive</u>. If the signs are different, the <u>result is negative</u>.

  • - ( - ) = +
  • + ( + ) = +
  • - ( + ) = -
  • + ( - ) = -

<h3>Resolution</h3>

4 + ( - 3 ) - 2 · ( - 6 )

4 - 3 - ( - 12 )

4 - 3 + 12

1 + 12

<u>13</u>

Therefore, the alternative value will be <u>13</u>

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Step-by-step explanation:

3y means 3 times y.  It is normally used to shorten an equation with a variable to save room.  The number is always placed before the variable.

4 0
3 years ago
In circle P diameter QS measures 30 cm.
kow [346]

<u>Given</u>:

The diameter of the circle P is 30 cm.

The radius of the circle P is 15 cm.

The measure of ∠RPS is 125°

We need to determine the arc length of QR.

<u>Measure of ∠QPR:</u>

The angles QPR and RPS are linear pairs.

Thus, we have;

\angle QPR + \angle RPS=180^{\circ}

Substituting the values, we have;

\angle QPR + 125^{\circ}=180^{\circ}

          \angle QPR =55^{\circ}

Thus, the measure of ∠QPR is 55°

<u>Arc length of QR:</u>

The arc length of QR can be determined using the formula,

Arc \ length =(\frac{\theta}{360})2 \pi r

Substituting \theta=55 and r =15, we get;

Arc \ length =(\frac{55}{360})2 (3.14)(15)

Arc\  length = \frac{5181}{360}

Arc \ length =14.4 \ cm

Thus, the arc length of QR is 14.4 cm.

Hence, Option d is the correct answer.

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3 years ago
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4 years ago
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koban [17]

Answer:

-28x(-1.6)

Step-by-step explanation:

combine like terms: -18x +(-10x)  ---> <u>-28x</u>

                                   3-4.6           ---> <u>-1.6</u>

Combine the leftover terms:

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