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2 years ago

Which expression result in a rational number? Select all that apply.

Mathematics

1 answer:

Ksju [112]2 years ago

6 0

I’m pretty sure that the answer is C+D because those numbers, when you find the square root, are real numbers.

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A professor is examining a new strain of bacteria. The amount of bacteria can be modeled by function s(n) = 20 · bn, where n is

user100 [1]

For this case we have a function of the form:
$y = A * (b) ^ n
$
Where,
A: initial amount
b: growth rate (if b> 1)
n: time in hours
Substituting values we have:
$s (n) = 20 * b ^ n
$
We have then that the initial amount is:
$A = 20
$
If b = 1.85 then the growth percentage is:
$(1.85-1) * (100) = 85%
$
Answer:
here were initially 20 bacteria.
The hourly percent growth rate of the bacteria would be 85%

8 0

2 years ago

What is the product and simplest form 2/3 times 1/8

ludmilkaskok [199]

Answer:

$\frac{1}{12}$

Step-by-step explanation:

Since we're finding the product, we have to multiply:

$\frac{2}{3}$ × $\frac{1}{8}$

You can simplify in this stage by using the "butterfly method", and dividing $2$ by $2$ , and $8$ by $2$ , you'd then have:

$\frac{1}{3}$ × $\frac{1}{4}$

Multiply the numerators and the denominators to get:

$\frac{1}{12}$

If you prefer the longer way, again, multiply:

$\frac{2}{3}$ × $\frac{1}{8}$

Multiply the numerators and the denominators:

$\frac{2}{24}$

Simplify the fraction by dividing both the numerator and denominator by $2$ :

$\frac{1}{12}$

7 0

2 years ago

Read 2 more answers

In the diagram, P1P2 and Q1Q2are the perpendicular bisectors of AB¯¯¯¯¯ and BC¯¯¯¯¯, respectively. A1A2 and B1B2 are the angle b

4vir4ik [10]

We have to choose the correct answer for the center of the circumscribed circle of a triangle. The center of the circumscribed circle of a triangle is where the perpendicular bisectors of a triangle intersects. In this case P1P2 and Q1Q2 are perpendicular bisectors of sides AB and BC, respectively and they intersect at point P. S is the point where the angle bisectors intersect ( it is the center of the inscribed circle ). Answer: P.

7 0

2 years ago

in one week, 128 cell phones were sold. The following week 37 more cell phones were sold than the week before. How many cell pho

Pani-rosa [81]

$\large\bf{\underline{Given :}}$

128 cellphones were sold in a week
37 more cellphones more were sold than the week before

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ $\large\bf{⟹128+37=165}$

__________________________________________

$\large\bf{\underline{Therefore:}}$

$\bf{Total\: number\:of\: cellphones\:sold\:in\:two\:weeks}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $\large{⟹128 + 165}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $\large{⟹293}$

__________________________________________

$\large\bf{\underline{Hence}}$

293 cellphones were sold in given 2 weeks

6 0

2 years ago

Craig is considering four loans. Loan L has a nominal rate of 8.254%, compounded daily. Loan M has a nominal rate of 8.474%, com

nalin [4]

In order for you to be able to determine on which is the best effective interest rate, we need to compute each interest and see on how much would it accrue after it matures. The formula to use is the compound interest formula which is A=P(1+r/n)^nt, wherein A is the amount of due including the interest, P as the principal, r as the interest rate, n as the number of times it would be compounded per year and t as the number of years it would be loaned. To reassign the formula with each given interest rate, and assuming that the amount to be loaned would be 1,000 and the number of years it would be loaned will be 5 years, the amount due after 5 years for the 8.254% compounded daily will be 1,510.82, for the 8.474% compounded weekly will be 1,527.03, for the 8.533% compounded monthly will be 1,529.80, for the 8.604% compounded yearly will be 1,510.88. The best effective interest rate offer would be the 8.254% compounded daily.

4 0

2 years ago

Read 2 more answers