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klasskru [66]
2 years ago
6

Plz helppppppppoppppppp

Mathematics
1 answer:
kenny6666 [7]2 years ago
3 0

Answer:

D

Step-by-step explanation:

Option A:

(3)¹ × (3)⁻¹⁰   =  (3)⁽¹⁻¹⁰⁾   = 3⁹

=

=

Option B :

(3)⁻¹ × (3) ¹⁰   = 3⁽¹⁰⁻¹⁾

= 3⁹

= 19683

Option C :

(3⁻⁴) × (3)⁷   = 3⁽⁷⁻⁴⁾

              = 3³

Option D :

3⁴ × 3⁻⁷ = 3⁴⁻⁷

= 3⁻³

=  

=

Therefore, option D is the answer.

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Q10 A student wants to raise £100 for charity.
ElenaW [278]

Answer:

He must charge minimum £0.84 for one hot dog.

Step-by-step explanation:

Ingredients cost for hot dogs at the supermarket,

Price of dog sausages tin of 8 = 50p ≈ £0.5

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Number of tins required for 150 hot dogs = \frac{150}{8} = 6.25

So student will purchase 7 tins.

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Number of dog buns packets required = \frac{150}{6} = 25

Cost of 25 packs = 25 × 0.9

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Total cost of the material used for 150 buns = 22.5 + 3.5

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Let the selling price of each hot dog = £x

Then selling price of 150 hot dogs = £150x

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Please use the solution below:
Let P = perimeter, A = area
As provided above, a = xy and 
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112 = 2x + 2y
56 = x + y

x = 56-y or y = 56-x
Let's solve the perimeter in terms of y using the formula below:
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Therefore, x = 28.
We can conclude that the figure is not a rectangle but a square.
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