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4 years ago

*4.8.21

Mathematics

1 answer:

pickupchik [31]4 years ago

5 0

Answer:

19.9 days

Step-by-step explanation:

The amount remaining after d days is ...

a = (1/2)^(d/7)

We want to find d when a = 0.14

log(a) = (d/7)log(1/2)

d = 7·log(0.14)/log(1/2) ≈ 19.855 ≈ 19.9

The farmers need to wait about 19.9 days for it to be safe.

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Find the solutions to the equation 102x 11 = (x 6)2 – 2. Which values are approximate solutions to the equation? Select two answ

otez555 [7]

You can try finding the roots of the given quadratic equation to get to the solution of the equation.

There are two solutions to the given quadratic equation

$x = 0.202, x = 113.798$

<h3>How to find the roots of a quadratic equation?</h3>

Suppose that the given quadratic equation is $ax^2 + bx +c = 0$

Then its roots are given as:

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

<h3>How to find the solution to the given equation?</h3>

First we will convert it in the aforesaid standard form.

$102x + 11 = (x-6)^2 - 2\\102x + 11 + 2 = x^2 + 36 - 12x\\0 = x^2 -114x + 23\\x^2 -114x + 23 = 0\\$

Thus, we have

a = 1. b = -114, c = 23

Using the formula for getting the roots of a quadratic equation,

$x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}\\\\x = \dfrac{114 \pm \sqrt{114^2 - 92}}{2} \\\\ x = 0.202 (\text{used "-" sign})\\\\x = 113.798 ( used "+" sign})$

Thus, there are two solutions to the given quadratic equation

$x = 0.202, x = 113.798$

Learn more here about quadratic equations here:

brainly.com/question/3358603

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3 years ago

A drawer contains 8 blue socks, 8 black socks, and 4 white socks. Socks are picked at random. Explain why the events picking a b

sertanlavr [38]

Answer:

because he just wants his socks to wear

Step-by-step explanation:

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3 years ago

At a fabric store, fabrics are sold by the yard. A dressmaker spent $36.35 on 4.25 yards of

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3 years ago

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Kiran is getting dinner for his drama club on the evening of their final rehearsal.

gladu [14]

4.98 for the water and for the food it’s 52.9 dollars for 10 pounds.

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3 years ago

Which expresses ___ as a perfect square?

Nataly [62]

I believe the answer is B. This is because a perfect square is an integer that is the square of another integer. For instance, 9 is a perfect square/square number because it equals 3^2 [3*3]. And in this case when B is square rooted, you then get the value that makes it a perfect square.

I’m pretty sure, but I’ll check on it also. It’s been awhile .

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3 years ago