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Nat2105 [25]
2 years ago
5

Drag steps in the given order to evaluate this expression. (−3)(2)−7(−3)−10

Mathematics
2 answers:
patriot [66]2 years ago
8 0
Step 1:
 
Multiply the numbers in parentheses:
 (-3 * 2) - (7 * (- 3)) - 10
 -6 - (- 21) -10
 Step 2:
 
Equal signs are added:
 -6 + 21-10
 Step 3:
 
Make the algebraic sum:
 -6 + 21-10 = 5
 Answer:
 
the final result is 5.
Ad libitum [116K]2 years ago
8 0

Answer:

(-3)(2) - 7 ( -3) -10\\= (-6) - (-21) -10\\= -16 + 21 - 10\\= -5\\

Step-by-step explanation:

We will follow the rule of BODMAS

B - Bracket Of

D - Division

M = Multiplication

A = Addition

S = Subtraction

On solving the give equation as per the order of BODMAS, we get -

(-3)(2) - 7 ( -3) -10\\= (-6) - (-21) -10\\= -16 + 21 - 10\\= -5\\

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Answer:

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Step-by-step explanation:

Given:

Distance of rod from the wall = 45 cm

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Length of rod = 12 cm

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Also, <DMA and <BFM are equal because they are corresponding angles

To find the length of the shadow, let's take the equation

\frac{DM}{BF} = \frac{AM}{A.F}

Where.:

DM = ½ of length of the rod = ½*12 = 6

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Therefore,

\frac{DM}{BF} = \frac{AM}{A.F}

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Cross multiplying, we have:

15 * B.F = 60 * 6

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The shadow on the wall =

2 * BF

= 2 * 24

= 48 cm

The shadow on the wall is 48 cm

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