ANSWER: square root of 10
Rule: Pythagorean Theorem (a^2 + b^2 = c^2; side^2 + second side^2 = hypotenuse^2)
(substitute the missing side w/ a variable)
x^2 + 7^2 = (sqrt. 59)^2
x^2 + 49 = 59
x^2 = 10
x = sqrt. 10
Answer:
Elimination:
-4x - 2y = -18 -4x - 2y = -18
x + 3y = 8 | ×4 ------> <u> 4x + 12y = 32 </u> +
10y = 14
y = 1,4
x + 3y = 8
x + 3(1,4) = 8
x + 4,2 = 8
x = 3,8
Answer:
Half of the 12-inch quesadilla
Step-by-step explanation:
Half of 12 inch:
½ × 3.14 × 12² = 226.08 in²
5 inch:
3.14×5² = 78.5 in²
Answer:
14
Step-by-step explanation:
The sum of their age is 19.
This means that when you add their ages together, it will be 19.
L+R=19
The positive difference of their age is 9.
It tells you that Lily is the older child.
Since the difference is a positive number, that means it would be Lily's age minus Rosie's age since Lily is older.
L-R=9
Now you have 2 equations that can be used to find their ages.
Start with the first equation.
L+R=19.
Solve for L.
Subtract R on both sides.
L=19-R
Now use the substitution method (replacing or "substituting" L with 19-R) for the next equation.
L-R=9
(19-R)-R=9
19-2R=9
-2R=-10
R=5
Rosie's age is 5.
Rosie's age is 5. Now use the first equation to find Lily's age.
L+5=19
L=14.
Lily's age is 14.
Answer:
4.2
Step-by-step explanation:
Because 1/5 has to be converted into the 100 as the denominator and the number you are supposed to have for the numerator so it can be easier and 4 is the whole number so it doesnt need to be in the equation.
1/5
X
20= 20/100 so now all you have to do is make that a decimal since it hasnt got to 100 or past it and you have your answer
