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3 years ago

Please help! I will mark Best answer

Mathematics

2 answers:

ivolga24 [154]3 years ago

6 0

Answer:

Step-by-step explanation:

It is zero.

0= 54r

Therefore r=0.

ankoles [38]3 years ago

5 0

Answer:

x=0 so answer is A

Step-by-step explanation:

hope that helps

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4 kg of bananas and 3 kg of apples cost £7.50. 3kg of bananas and 5 kg of apples cost £8.10. work out how much 2kg of bananas an

Tanzania [10]

Answer:

£4.20

Step-by-step explanation:

Let :

cost of 1 kg banana = x
cost of 1 kg apple = y

Equations formed :

4x + 3y = 7.50 [Equation 1]
3x + 5y = 8.10 [Equation 2]

Multiply Equation 1 by 5 and Equation 2 by 3 :

20x + 15y = 37.50
9x + 15y = 24.30

Subtract the newly formed equations :

11x = 13.20
x = 1.20

Finding y :

4(1.20) + 3y = 7.50
4.80 + 3y = 7.50
3y = 2.70
y = 0.90

Then :

Cost of 1 kg banana = £1.20
Cost of 1 kg apple = £0.90

Cost of 2 kg bananas and 2 kg of apples :

2(1.20) + 2(0.90)
2(2.10)
£4.20

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2 years ago

If 100 units of a product cost $5,000 and 200 units cost $8,000, what is the incremental cost per unit of the second 100 units?

Art [367]

I don’t know why the word “million” is there, but the incremental cost per unit of the secon hundred units is $30 per unit.

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What equivalent expression is equal to this (2^-4*2^-3)^5

Katen [24]

$(2^{-4} \cdot z^{-3})^5=2^{-4 \cdot 5} \cdot z^{-3 \cdot 5}=2^{-20} \cdot z^{-15}$

⇒ $\frac{1}{2^{20} \cdot z^{15}}$

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Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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