How do I do this question

Mathematics

1 answer:

exis [7]2 years ago

7 0

To make the x the subject of an equation simply isolate x. To isolate means to get (something) by itself. To isolate x in this equation, just subtract A from both sides.

Note: Whatever operation you apply to an equation, you must apply to both sides of the equation to keep the sides equal. That is why you must subtract A from both sides.

y = x + A
-A - A
y - A = x
x = y - A

Answer:
x = y - A

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Sara buys soil from a gardener to fill a planter.The gardener has 1.5 cubic feet of soil to sell for $6. Sara buys just enough s

Travka [436]

The first thing you should do is calculate the volume of the prism.
We have then:
V = h * L ^ 2
Where,
L: side of the square base.
h: height.
Substituting we have:
V = (0.5) * (1) ^ 2 = 0.5 feet ^ 3.
Then, we can make the following rule of three:
1.5 feet ^ 3 ---> 6
0.5 feet ^ 3 ---> x
Clearing x we have:
x = (0.5 / 1.5) * (6) = 2 $
Answer:
it will cost Sara 2 $ to completely fill her planter with soil

5 0

2 years ago

the question is in the picture below, if you could show all your work so i can see how to do it, that would be appreciated.

ki77a [65]

m∠R = 27.03°

Solution:

Given In ΔQRP, p = 28 km, q = 17 km, r = 15 km

To find the measure of angle R:

Law of cosine formula for ΔQRP:

$r^{2}=p^{2}+q^{2}-2 pq \cos R$