<span>7q^2 − 28 = 0
</span>7q^2<span> = 28
</span>q^2<span> = 28/7
</span>q^2<span> = 4
</span>q^2= 2^2
<span>q=+ 2 and q = -2
hope that helps
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Taking the difference of the both you can see that 2 kg of gummy bears would cost $18. So each kg of gummy bear is $9. Now subtract $9 from what Erika bought, and 3 kg of red hots are $12. So each kg of red hots are $4.
Answer:
A service business because it lists the products for online purchase
Step-by-step explanation:
Adele does not manufacture the clothes that she sells, but rather acquires and resells them electronically. Therefore, she provides a clothing sales service, forming part of the third sector of the economy. If, on the other hand, she manufactured the clothes, her business would be manufacturing and, therefore, she would be part of the second sector of the economy, as she would be carrying out a type of industry.
First you must see how many seats were bought. To do this you must make a proportion

80 is a percent and percent's are always taken out of the 100. This means that one proportion will have 80 as the part and 100 as the whole
We want to know what 80% of 2,500 is in order to find how many seats were sold before the show. This means 2,500 is the whole and the unknown (let's make this x) is the part.
Here is your proportion:

Now you must cross multiply
x*100 = 80*2,500
100x = 200,000
To isolate x divide 100 to both sides
100x/100 = 200,000/100
x = 2,000
This means that before the night of the concert 2,000 seats were bought.
We are still not done with this problem because we want to know how many seats are left the night of the concert. To find this simply subtract 2,000 from the number of original seating (2,500)
2,500 - 2,000 = 500
On the night of the concert there were 500 seats left.
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
5-a) The perimeter of the rectangle = 2(2x + 4x + 1,5) = 12x + 3
Step-by-step explanation: