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MrRa [10]
2 years ago
5

Petra’s electricity supply company charges her a fixed quarterly sum plus a rate per unit for electricity used. In the most expe

nsive quarter last year (January to March), she used 2 000 units and her bill was $250. In the least expensive quarter (July to September), she used 600 units and her bill was $138. She is now adding extra insulation to her home which is expected to reduce her overall electricity consumption by 25%. What can she expect her January to March bill to be next year (if there are no increases in overall tariffs)? *
Mathematics
2 answers:
Arlecino [84]2 years ago
6 0

Answer:

The size of ur mamma

Step-by-step explanation:

21

antoniya [11.8K]2 years ago
6 0

Answer:

I'm not that smart yet so I'm sorry I can't help you

Step-by-step explanation:

Sorry

You might be interested in
If a(x) = 2x - 4 and b(x) = x + 2, which of the following expressions produces a quadratic function?
Elanso [62]

Answer:

(ab)(x)

Step-by-step explanation:

Data provided in the question

a(x) = 2x - 4

b(x) = x + 2

Now we go through each options

First option

(ab)(x)=(2x-4)(x+2)

=2(x-2)(x+2)

=2(x^2-4)

=2x^2-8

Second option

\dfrac{a}{b}(x)=\dfrac{2x-4}{x+2}

Third option

(a-b)(x)=(2x-4)-(x+2)

=2x-4-x-2

= x - 6

Fourth option

(a+b)(x)=(2x-4)+(x+2)

=2x-4+x+2

= 3x - 2

As we can see from the above options only option A is correct i.e it only produced a quadric function

5 0
2 years ago
Emi walks her dog every day for 2 hours how many hours does emi walk in 5 weeks
julsineya [31]

Answer:

70 hours in 5 weeks

Step-by-step explanation:

Hours * Week

2*7=14

Hours per Week * Weeks

14*5= 70

{You can also multiply 35*2}

3 0
2 years ago
Read 2 more answers
Mikhail believes he can use the multiplication expression 1/2x6 to find the total number of
Svetlanka [38]

Answer:

I think the second option is the most appropriate option.

Step-by-step explanation:

Mikhail believes he can use the multiplication expression \frac{1}{2} \times 6 to find the total number of  pound servings of rice he can make  from 6 pounds of rice.

Now, we have to select the statement from the four options that best explains why Mikhail is correct or incorrect.

I think the second option is the most appropriate option.

So, Mikhail is correct in using a multiplication expression because 1/2 is the number of servings per pound. (Answer)

7 0
2 years ago
4 and 5 are complements, and 1 and 5 are complements. By the congruent complements theorem, which angle is congruent to 4? 1 2 3
Zepler [3.9K]
The theorem tells you angles complementary to the same angle are congruent. Both 4 and 1 are complementary to 5, so 4 and 1 are congruent.

The angle congruent to 4 is 1.
8 0
2 years ago
Read 2 more answers
The triangular prism shown has triangular _____face(s) and lateral face(s).
dmitriy555 [2]

Answer:

The triangular prism shown has 2 triangular face(s) and 3 lateral face(s).

The area of one triangular face is 7.5 mm²

The surface area of the triangular prism is 135 mm²

Step-by-step explanation:

A triangular face of the prism is the face that has a three sided figure while the lateral faces are faces with four-sided figure. As seen from the triangular prism, it has 2 triangular faces since it is made up of 2 right angled triangles and has 3 lateral faces since it is made up of 3 rectangles which are 4 sided each.

Area of one triangular face = \frac{1}{2} * base * height

Given base = 2.5 mm and height = 6 mm

Area of one triangular face = \frac{1}{2} *2.5 * 6\\

= 3*2.5\\= 7.5mm^{2}

Surface area of triangular prism = bh + pH

b= base of the triangle  = 2.5 mm

h- height of the triangle  = 6 mm

p= perimeter of the triangle  = base + height + slant height = 2.5+6+6.5

p = 15 mm

H= height of the prism = 8mm

Surface area of triangular prism = 2.5(6)+15(8)

Surface area of triangular prism = 15 + 120

Surface area of triangular prism = 135mm²

5 0
2 years ago
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