All categories

3 years ago

7 Electricity prices increased by 66%

Mathematics

1 answer:

klemol [59]3 years ago

7 0

Answer:

$23.7

Step-by-step explanation:

Electricity prices increased by 66% in 2009.

Mr and Mrs Smith’s bill was $69.72 after the increase .

The bill before the increase will be 66% / 100% x $69.72

= 0.66 x 69.72

= $46.02

Bill before the increase will be $69.72 - $46.02

=$23.7

You might be interested in

<img src="https://tex.z-dn.net/?f=what%20is%208%28y-3%29" id="TexFormula1" title="what is 8(y-3)" alt="what is 8(y-3)" align="ab

Brrunno [24]

8y-24 should be your answer

3 0

2 years ago

Read 2 more answers

At a local swimming pool, the diving board is elevated h = 9.5 m above the pool's surface and overhangs the pool edge by L = 2 m

beks73 [17]

<h2>Answer:</h2>

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}\\9.5=4.9t^{2}$

and,

$v_{x}=1.39a_{x}+2.5$

<h2>Step-by-step explanation:</h2>

In the question,

Taking the elevation of pool along the y-axis, and length of the board along the x-axis.

On drawing the illustration in the co-ordinate system we get,

lₓ = 2 m

uₓ = 2.5 m/s

and,

$h_{y}=9.5\,m$

So,

From the equations of the laws of motion we can state that,

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}$

So,

On putting the values we can say that,

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}\\9.5=(0)t+\frac{1}{2}(9.8)t^{2}\\t^{2}=\frac{9.5}{4.9}\\t^{2}=1.93\\t=1.39\,s$

Now,

The <u>equation of the motion in the horizontal</u> can be given by,

$v_{x}=u_{x}+a_{x}t\\v_{x}=2.5+a_{x}(1.39)\\So,\\v_{x}=1.39a_{x}+2.5$

<em><u>Therefore, the equations of the motions in the horizontal and verticals are,</u></em>

$s_{y}=u_{y}t+\frac{1}{2}a_{y}t^{2}\\9.5=4.9t^{2}$

and,

$v_{x}=1.39a_{x}+2.5$

6 0

2 years ago

d. If you double a certain number and subtrack 7 you get the same answer as when you add 5 to the number, Determine the number

umka21 [38]

Answer:

Step-by-step explanation:

Let n = the number.

2n - 7 = n + 5

n = 12

Let’s check if we got the right answer by substituting 12 for n into the original equation.

2*12 - 7 = 12 + 5

24 - 7 = 17

17 = 17

4 0

1 year ago

How to put 1.3, 1 1/3, 1.34 in order from least to greatest

Natasha_Volkova [10]

11/3, 1.3, 1.34 Is the correct way to put it. PLZ give me the Brainliest answer. :)

7 0

3 years ago

Read 2 more answers

The length of a rectangle is 24 units.can the preimteter p of the rectangle be 60 units when it’s width w is 11 units?

Alenkinab [10]

No it can’t because calculating the perimeter, you would have to add all sides of the rectangle. If you added 11 + 11 + 24 +24, the perimeter would be 70 not 60.

8 0

3 years ago