All categories

3 years ago

Is the square root of 245 rational or irrational

Mathematics

1 answer:

Paraphin [41]3 years ago

5 0

Answer:

The square root of 245 is a rational number

Step-by-step explanation:

The square root of 245 is about 15.9, or rounded: 16. 16 is not an irrational number.

You might be interested in

One angle of an isosceles triangle measures 90°. Which other angles could be in that isosceles triangle?

Alika [10]

Hello from MrBillDoesMath!

Answer:

45 (all three: 45, 45, 90)

Discussion:

Let "x" be the base angle in the isosceles triangle. As base angles are equal in an isosceles triangle and a triangle contains 180 degrees:

x + x + 90 = 180 =>

2x + 90 = 180 => subtract 90 from both sides

2x = 180 -90 =>

2x = 90 => divide both sides by 2

x = 45

Thank you,

MrB

3 0

3 years ago

Read 2 more answers

How do i solve 6(2-4y) +4(6y-2)<4(y+4)

netineya [11]

$6(2-4y) +4(6y-2)$ (distribute)

$12-24y+24y-8$ (collect like-terms)

$12-8$ (we flipped the sign because we divided by a negative)

$y>-3$

7 0

2 years ago

Shay and Nadine solve this problem in two different ways. You have $25$25 in your bank account. You make $7$7 per hour babysitti

brilliants [131]

you need 20 hours babysitting here is how you solve that

you subtract 25 form 165 which is 140 then you divide by 7 which is 20.

your answer is 20.

4 0

3 years ago

What are the domain and range of the function x^2-2x^2-4?

jonny [76]

${x}^{2} - 2 {x}^{2} - 4 \\ - {x}^{2} - 4$

The Quadratic Function has the domain as the set of all real numbers.

For the range, start from minimum value to maximum value.

But because the parabola is downward as a < 0. Thus, there are no minimum value but the maximum value instead.

Therefore the range is y <= -4

7 0

3 years ago

Compound interest of $1000 is invested at 10% compounded continuously, the future value s at any time t in years is given by s=1

crimeas [40]

Answer: 6.93 years

Step-by-step explanation:

Given

Rate of interest is $r=10\%$

Future value is given by $s=1000e^{0.1t}$

For the investment to double itself, i.e. $s=2000$

$\Rightarrow 2000=1000e^{0.1t}\\\Rightarrow 2=e^{0.1t}\\\\\text{Taking log both sides}\\\\\Rightarrow \ln 2=0.1t\\\\\Rightarrow t=\dfrac{\ln 2}{0.1}\\\\\Rightarrow t=6.93\ \text{years}$

It takes around 6.93 years to double the investment.

8 0

2 years ago