3-5 = 4a - 7(1 - 5a)

Mathematics

1 answer:

Semmy [17]3 years ago

5 0

Answer:

a = 5/39

Step-by-step explanation:

We assume you want to solve the equation for "a".

-2 = 4a -7 +35a . . . . simplify

5 = 39a . . . . . . . . . . add 7

5/39 = a . . . . . . . . . divide by the coefficient of a

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OLEGan [10]

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4 0

2 years ago

Can you work out G and H for me please. preferably telling me how you did it aswell

Veronika [31]

Abd is a right angled triangle so by pythagoras we know
${g}^{2} = {11}^{2} + {13}^{2} \\ {g}^{2} = 290 \\ g = \sqrt{290} \: or \: g = 17.03cm$
and to calculate h we need to use the sine rule
$\frac{h}{ \sin(22) } = \frac{g}{ \sin(32) } \\ \frac{h}{ \sin(22) } = \frac{17.03}{ \sin(32) } \\ h = \frac{17.03}{ \sin(32) } \times \sin(22) \\ h = 12.04cm$
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8 0

2 years ago

****ASAP***** can someone pls help me with this? and can you describe it please?

Studentka2010 [4]

Add 165 to 245. That is a total of 410kWh.

245kWh is more than 50% of 410kWh.

So, according to the plan, you will pay NightTimer rate for kWh at night and DayTimer rate during the day.

The work done:

$(165*0.05281)+(245*0.05456)\\8.71365+13.3674=22.08085$