If 7 giant solar power plants generate 1.3 gigawatts of energy to power 900,000 homes, how many gigawatts can 21 giant solar plants generate

3.9 gigawatts

Step-by-step explanation:

Using the idea of proportion;

If 7 giants = 1.3 gigawatts

21 giants = x gigawatts

We cross multiply

7 × X = 21 × 1.3

7X = 27.3

We divide bothside by 7 to get the value of x

7X/7 = 27.3/7

x = 3.9

Therefore 21 giants can generate 3.9 gigawatts.

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value