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Oksi-84 [34.3K]
3 years ago
13

1. 9 students volunteer for a committee. How many different 6-person committees can be chosen?

Mathematics
1 answer:
Semenov [28]3 years ago
5 0
2. A 

becasue it say that you randomly ask everyone
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The formula is used to convert Celsius to Fahrenheit temperature.
Rudik [331]

Answer:

60 degrees Fahrenheit

Step-by-step explanation:

The formula you would need to use:

(20°C × 9/5) + 32 = 68°F

6 0
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%

Now, to determine the energy in joules (J) that the solar panel produce each day

We can determine the energy from the formula

Energy = Power × time

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

Time = (6 × 60 × 60) secs = 21600 secs

Hence,

Energy = 300 watts × 21600 secs

Energy = 6480000 Joules

Energy = 6.48 × 10⁶ J

8 0
3 years ago
Read 2 more answers
Solve the equation.<br> 4x + 1 + 2x = 61<br><br> 6<br><br> 10<br><br> 10.3<br><br> 11.8
poizon [28]

Answer:

x = 10

Step-by-step explanation:

=> 4x + 1 + 2x = 61

=> 6x = 61 - 1

=> 6x = 60

=> x = 60/6

=> x = 10

<u>Hence</u><u> </u><u>the</u><u> value</u><u> of</u><u> x</u><u> </u><u>is</u><u> </u><u>1</u><u>0</u><u> </u><u>.</u>

3 0
3 years ago
Find the missing length <br> . Leave your answers in simplest radical form
KIM [24]

Use the Pythagorean theorem:

2)

x^2+7^2=14^2\\\\x^2+49=196\qquad\text{subtract 49 from both sides}\\\\x^2=147\to x=\sqrt{147}\\\\x=\sqrt{49\cdot3}\\\\x=\sqrt{49}\cdot\sqrt3\\\\\boxed{x=7\sqrt3\ mi}

4)

x^2+9^2=(\sqrt{226})^2\\\\x^2+81=226\qquad\text{subtract 81 from both sides}\\\\x^2=145\to \boxed{x=\sqrt{145}\ km}

5 0
3 years ago
5. Why is marine pollution a major problem?
andreyandreev [35.5K]

Answer:

Marine pollution is a major problem because it <em>endangers marine life that ingests the pollution which affects us when we eat fish or seafood, makes the ocean less safe for humans to swim in, and the ocean can't function the way it's meant to when unpolluted.</em>

6 0
3 years ago
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