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Delicious77 [7]
3 years ago
11

an SUV sold for 4,000 when Mark bought it. when Sarah bought it later, it was 3,000. what is the percent of the change from mark

s purchase to Sarah's ?​
Mathematics
1 answer:
worty [1.4K]3 years ago
6 0

Answer:

25%

Step-by-step explanation:

= (4000 - 3000)/4000 × 100%

= 1000/4000 × 100%

= 0.25 × 100%

= 25%

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The two roots a + sqrt b and a - sqrt b are called conjugate radicals.

<u>Solution:</u>

Given that the two roots a + sqrt b and a - sqrt b are called ______ radicals.

Now let us write the each of the given two radicals in mathematical form.

So, first radical ⇒ a + sqrt b ⇒ a+\sqrt{b}   [ since sqrt means square root]

Now second radical ⇒ a - sqrt b ⇒ a-\sqrt{b}

We have to find the relation between a+\sqrt{b} \text { and } a-\sqrt{b}

Now, if observe a+\sqrt{b}  is conjugate of a-\sqrt{b} \text { as }(a+\sqrt{b})(a-\sqrt{b})=a^{2}-b

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Step-by-step explanation:

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