3 years ago

Twice the difference of a number and seven

Mathematics

1 answer:

levacccp [35]3 years ago

4 0

The difference of a number and seven is x - 7. So twice that, would be:

2(x - 7)

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Johann wants to find a rectangular solar panel with an area of 128 cm. If the

Papessa [141]

Answer:

The length of rectangular panel is 6.4 cm.

Step-by-step explanation:

We are given the following information in the question:

Area of rectangular solar panel = 128 square cm

Width of panel = 20 cm

We have to find the length of the panel

Formula:

$\text{Area of rectangular panel} = \text{Width}\times \text{Length}\\\Rightarrow 128 = 20\times \text{Length}\\\\\text{Length} = \displaystyle\frac{128}{20} = 6.4\text{ cm}$

Hence, the length of rectangular panel is 6.4 cm.

This is an example of direct variation as greater would be length and breadth, the greater would be the area.

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SCORPION-xisa [38]

Answer:

it is 34

Step-by-step explanation:

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V125BC [204]

0.4 inches because of the scale

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2 years ago

How do you solve this 2 step equation: n+5/-16=-1

Sophie [7]

N+5/-16=-1
N+5=16
N=11

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3 years ago

A number, y, is equal to twice the sum of a smaller number and 3. The larger number is also equal to 5 more than 3 times the sma

Anit [1.1K]

The first equation gives:

y = 2 * (x + 3) >>> y = 2x + 6

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The second sentence gives:

y = 5 + 3x >>> 3x - y = -5

The answer is (A), the first choice.

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3 years ago

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