3 years ago

Three subtracted from twice a number equals 31 more than three times the number. find the number

Mathematics

1 answer:

Ksivusya [100]3 years ago

5 0

Answer:

Step-by-step explanation:

Let the no. be x,

2x-3=3x+31

3x-2x= -3-31

x= -34

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Jenny bought a wok for £9.60 in a 20% off sale. What was the price of the wok before the sale?

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3 years ago

Drag the tiles to the correct boxes to complete the pairs.

Len [333]

Answer:

1. $(-2^2)^{-6}$ ÷ $(2^{-5})^{-4} \implies 2^{-32}$

2. $2^4 . (2^2)^{-2} \implies 1$

3. $(-2^{-4}).(2^2)^0 \implies -2^8$

4. $(2^2).(2^3)^{-3} \implies 2^{-5}$

Step-by-step explanation:

1. $(-2^2)^{-6}$ ÷ $(2^{-5})^{-4}$ :

$= \frac{ ( - 2 ^ 2 ) ^ { - 6 } } { ( 2 ^ { - 5 } ) ^ { - 4 } } = \frac{2^{-12}}{2^{20}} = 2^{-12-20}=2^{-32}$

2. $2 ^ 4 . ( 2 ^ 2 ) ^ { - 2 }$ :

$= 2^4 \times \frac{1}{2^4} = 1$

3. $(-2^{-4}).(2^2)^0$ :

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4. $(2^2).(2^3)^{-3}$ :

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5 0

3 years ago

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Which of the following systems of inequalities has no solution?

RSB [31]

Answer:

The third one

Step-by-step explanation:

y=>x+1

y=<x-1

removing y

x-1 => x+1

removing x

we have no solution

6 0

3 years ago

Read 2 more answers