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3 years ago

Can anyone help me with this please and maybe explain it?.. I need working please

Mathematics

2 answers:

m_a_m_a [10]3 years ago

4 0

Electricity used in 40 minutes = 800 watts

So, electricity used in 1 minute

= 800watts/40

= 20 watts

Electricity used in 3 hours

= electricity used in 180 minutes

= electricity used in 1 minute × 180

= 20 watts × 180

= 3600 watts

Tanzania [10]3 years ago

3 0

Answer:

it uses 3,600 watts of electricity in 3 hours

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3 years ago

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3 years ago

"Complete the square" to convert the equation of each circle to graphing form. Identify the center and the radius.

Reil [10]

Answer:

The center is (-3,2) and the radius is r=2

Step-by-step explanation:

The general equation of the given circle is

$x^2+6x+y^2-4y=-9$

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$x^2+6x+9+y^2-4y+4=-9+9+4$

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We factor to obtain;

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$(x-h)^2+(y-k)^2=r^2$

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3 years ago

Fihd the area of the triangle.<br> 6<br> 8<br> square units

damaskus [11]

Answer:

area of triangle is

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3 years ago

I need help fast please

Dmitrij [34]

1060 / 48 = 22.08333

0.0833 = 83/100

22 83/100

7 0

3 years ago