3 years ago

Three cartons of juice cost $4.77 .Find the cost of 8 cartons.

Mathematics

2 answers:

elena-s [515]3 years ago

4 0

You just need to do cross multiplication.
If 3 cartoons cost 4.77 then 8 cost...
8×4.77÷3=$12.72 done!

Trava [24]3 years ago

3 0

U will need to cross multiple

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At a certain time of the day, a tree 15 m tall casts a shadow of 12 m, while a second tree casts a shadow of 20 m. How tall is t

Anna35 [415]

We can write a proportion: 15 m is to 12 m as some other height $h$ is to 20 m

So we get
$\frac{15}{12}=\frac{h}{20}$
$\rightarrow 15*20=12h$
$\rightarrow 12h=300$
$\rightarrow h=25$

So the second tree is 25 m tall.

7 0

2 years ago

I need help with this problem

IgorC [24]

Answer:

Step-by-step explanation:

Her angle of depression is the same measure as the angle of inclination inside the triangle. That's the base angle that is not the right angle. The height of the triangle is the 10,000 feet she is up in the air, and the reference angle is 20, and we are looking for the measure of the base of this right triangle. The trig ratio that uses the side opposite over the side adjacent is the tangent ratio:

$tan(20)=\frac{10000}{x}$ and