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m_a_m_a [10]
3 years ago
11

Okay this is just I do not even know​

Mathematics
1 answer:
mixer [17]3 years ago
6 0

Answer:

x = - 7

Step-by-step explanation:

Given

- 2(x + 5) = 4 ( distribute terms in parenthesis by the - 2 outside )

- 2x - 10 = 4 ( add 10 to both sides )

- 2x = 14 ( divide both sides by - 2 )

x = - 7

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Visible light has higher energy than infrared light because visible light has higher frequencies.

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What is the equation of a line that has a slope of -3 and a y-intercept of 7? *
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Store reduces an item 20% after 3 weeks if unsold a further 30% if unsold after 6 weeks and after 7 weeks a further 10% estimate
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6 0
3 years ago
The weight of a baby measured in pounds doubles. Does its weight measured in kilograms also double? Explain your answer.?
kvv77 [185]

bearing in mind that 1Kg ≈ 2.2lbs.

so, if a baby is say 2.2lbs, and then it doubles in weight, to 4.4lbs.

well, we know when the baby was 2.2lbs it was exactly 1Kg, but when it went up to 4.4lbs, is it 2Kgs?  well, yes, 2Kgs = 2.2 + 2.2 or 2(2.2).

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7 0
3 years ago
Two birds sit at the top of two different trees. The distance between the first bird and a bird-watcher on the ground is 14.1 fe
Harman [31]
Use the trig ratio which gives you the most information. Here we have opposite and hypotenuse relative to angle x, so think sin( x ) = 14.1 / 27.9<span>Now we want to solve for x, but x is stuck inside the sine function
So how do we do this?
We can 'undo' the sine function by using the inverse sine. apply the inverse Sin to both sides of the equation.
sin^-1 ( sin(x) ) = sin^-1 ( 14.1 / 27.9)
the left side 'cancels' , leaving you with x
x = sin^-1 ( 14.1 / 27.9)</span><span>Now you need a calculator.
Make sure you are in degree mode.
Calculators can give you answer in radian or degree.
If you get a decimal answer, you are probably in radian mode.
Round up if you want nearest hundredth
30.3563 ≈ 30.36
Round up again if you want nearest tenth
30.36 ≈ 30.4
Hope this helps! :)


</span>
7 0
3 years ago
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