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2 years ago

5−4+7+1= 5 - 4 + 7 x + 1 = how is it no solution

Mathematics

1 answer:

laila [671]2 years ago

8 0

Answer:

There is a solution. Here's how:

Step-by-step explanation:

So, you work out the problem, and you lay it out here:

5-4+7+1=5-4+7x+1.

First, you start by subtracting 5 from both sides, which cancels both of the 5s. Here's your equation now:

-4+7+1=-4+7x+1

Next, you add 4 to both sides, which makes you identify the identity.

Here's your equation now:

7+1=7x+1

Now, you subtract 1 from both sides.

Here's your equation now:

7=7x

Finally, divide both sides by 7, while identifying the identity.

x=1.

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Step-by-step explanation:

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**Use a z table for probability.

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(b)

It is provided that P (Yₙ > 1000) > 0.99.

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The value of z for which P (Z < z) = 0.01 is 2.33.

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The last equation is a quadratic equation.

The roots of a quadratic equation are:

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c = 10000

On solving the last equation the value of n = 28.09.

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