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mart [117]
3 years ago
15

Factorize: a^2+10ab -75b^2

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
4 0

Answer:

9

Step-by-step explanation:

Alja [10]3 years ago
4 0
The answer is gonna be 9
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Please helpp <br> 25 = (a - 29/10
dedylja [7]

Step-by-step explanation:

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3 years ago
How long should the wooden frame be (use 3.14 for pi)
scoundrel [369]
C=2πr
The  C stands for circumference 
the π is Pi (3.14) 
and r is the radius (length of half a circle)

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Then to find the circle, since both are half circles. You can just do the normal circumference equation and you will end up with the same answer.

For example in this problem: this problem gives you the diameter but you need the radius of the circle. C=2(π)(1.5)

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3 years ago
How much energy in joules can the solar panel produce each day if solar cells were 100% efficient and generate 1000 watts of pow
notsponge [240]

Answer:

The solar panel produce 6.48 × 10⁶ J of energy each day.

Step-by-step explanation:

If the solar cells were 100% efficient and generate 1000 watts of power per square meter

The power generated per square meter will be

\frac{100}{100} \times 1000 watts/m^{2}

= 1000 watts/m²

This is the power that would be generated per square meter if the solar cells were 100% efficient.

Now, for a 1 square meter panel of solar cells with an efficiency of 30%, the power generated will be

\frac{30}{100} \times 1000 watts/m^{2} \times 1m^{2}

= 300 watts

This is the power that would be generated by a 1 square meter panel of solar cells with an efficiency of 30%

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Energy = Power × time

From the question, the solar cells receives the equivalent of 6 hours of direct sunlight per day, that is

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Energy = 300 watts × 21600 secs

Energy = 6480000 Joules

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8 0
3 years ago
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Answer:

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How do you know where to place the decimal point in the quotient when dividing decimals by a whole number
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