Answer:
The two equations that can be used to find each of their ages are
and
.
Step-by-step explanation:
We are given that Mrs. Lang is 4 times as old as her daughter Jill. The sum of their ages is 60 years.
Let the age of Mrs. Lang be 'x years' and the age of her daughter Jill be 'y years'.
Now, according to the question;
- The <u>first condition</u> states that Mrs. Lang is 4 times as old as her daughter Jill, that means;
----------------- [equation 1]
- The <u>second condition</u> states that the sum of their ages is 60 years, that means;
{using equation 1}

y = 12 years
Now, putting the value of y in equation 1 we get;
= 48 years
Hence, the age of Mrs. Lang is 48 years and her daughter Jill is 12 years old.
The only set that only has rational numbers is the first one:
{1/3, -3.45, √9}
<h3>
Which of the given sets contains only rational numbers?</h3>
A rational number is a number that can be written as the quotient of two integers.
If we look at the first set, the elements are:
- 1/3 which is a rational number.
- -3.45 = -345/100 which is a rational number
- √9 = 3 = 3/1 which is a rational number.
In the other sets we can see elements like:
√37, √44, or √2 which are all irrational numbers, then the only correct option is the first one.
If you want to learn more about rational numbers:
brainly.com/question/12088221
#SPJ1
The probability of it is 2/5
Answer:
2nd option i think
Step-by-step explanation:
bro i highly doubt your in high school and look like that like naw
Using the Pythagorean theorem a^2 +b^2 = c^2, where a and b are the sides of a triangle and c is the hypotenuse.
BA and AC are sides and BC is the hypotenuse.
we have 23^2 + b^2 = 45^2
529 + b^2 = 2025
b^2 = 2025 - 529
b^2 = 1496
b = sqrt(1496)
b = 38.68 = 38.7
The length of AC = 38.7