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lyudmila [28]
4 years ago
15

7 Electricity prices increased by 66%

Mathematics
1 answer:
klemol [59]4 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

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It is a 2 out of three chance of getting a composite number because that means that it is not odd. There are 10 odd numbers between 1 and 30 (2,3,5,7,11,13,17,19,23,29) and that means that there is a 20 out of 30, or 2 out of 3 chance taht the number will be composite.
6 0
3 years ago
What percent of $1.50 = $0.30
Semmy [17]
$0.30/$1.50= 0.2= 20%
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3 years ago
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What’s the answer ? i need to know to pass my AMDM class please !
kirill [66]

Answer:

225/4

Step-by-step explanation:

When you are trying to find the number to be added to a binomial of the form : x^2+bx in order to make it a perfect square trinomial, all you need to do is to use the square of half of the coefficient b. That is : (\frac{b}{2} )^2.

In your case this is: (\frac{15}{2} )^2=\frac{15^2}{2^2}=\frac{225}{4}

3 0
3 years ago
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Please help me out, I don't get it.
dimulka [17.4K]
The answer looks to be C.
7 0
3 years ago
Please find the surface area of the cone (image attached) and reduce answer to nearest tenth, if necessary.
Luba_88 [7]

Answer:

S.A = 135.6 yd^2 (

Step-by-step explanation:

Surface area of cone is given as:

Surface Area (S.A) = πr(r + l)

Where,

r = radius = 3 yd

l = slant height = 11.4 yd

Take π as 3.14

Plug the given values into the formula to find the surface area.

S.A = 3.14*3(3 + 11.4)

S.A = 9.42(14.4)

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