Let $x be the amount of money which Kelci has raised. <span>Brianna has raised 3 times more money than kelci, then she has raised $3x. Totally both have aised $(x+3x)=$4x.
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Since <span>together they have raised more than $300, then 4x>300,
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![x\ \textgreater \ \dfrac{300}{4}](https://tex.z-dn.net/?f=x%5C%20%5Ctextgreater%20%5C%20%20%5Cdfrac%7B300%7D%7B4%7D%20)
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Answer: the <span>inequality </span><span><span>
![x\ \textgreater \ \dfrac{300}{4}](https://tex.z-dn.net/?f=x%5C%20%5Ctextgreater%20%5C%20%20%5Cdfrac%7B300%7D%7B4%7D%20)
</span>can be used to determine the amount of money kelci has raised</span>
Answer:
Height of the object is 68.6 cm.
Step-by-step explanation:
The height of the object can be determined by:
= ![\frac{object height}{image height}](https://tex.z-dn.net/?f=%5Cfrac%7Bobject%20height%7D%7Bimage%20height%7D)
From the given question;
object distance from pinhole = 3.6 m = 360 cm
image distance from pinhole = 4.2 cm
height of image = 0.8 cm
So that;
= ![\frac{object height}{0.8}](https://tex.z-dn.net/?f=%5Cfrac%7Bobject%20height%7D%7B0.8%7D)
⇒ object height = ![\frac{360*0.8}{4.2}](https://tex.z-dn.net/?f=%5Cfrac%7B360%2A0.8%7D%7B4.2%7D)
= ![\frac{288}{4.2}](https://tex.z-dn.net/?f=%5Cfrac%7B288%7D%7B4.2%7D)
= 68.571
object height = 68.6 cm
Thus, the height of the object is 68.6 cm.
Answer: $230
Step-by-step explanation:
Since the discount Eric got was 75% of the normal price, you would divide 172.50 by 0.75 and you would end up getting the original price, or $230.