Answer:
r=6
Step-by-step explanation:
42=7r
r=42/7
r=6
Answer: 41 units
Step 1: Write sample equation
This type of problem can be solved using Pythagorean theorem. In case you are unfamiliar with this type of formula, it is helpful to write the sample equation as the first step. Let’s put this below.
a²+b²= c²
The a and b will stand for the legs, in this case the width and the length. The c will be the diagonal, also referred to as the hypotenuse.
Step 2: Substitute numbers
Now that we have the information on the equation format, let’s substitute the numbers accordingly.
a²+b²= c²
9²+40²= c²
Since we are solving for the hypotenuse, the third value will remain as c.
Step 3: Solve
For the final step, let’s solve for c.
*Rewrite equation*
9²+40²= c²
*Find the squared value of each number*
81+1,600= c²
*Add 81 and 1,600*
1,681= c²
*Cancel out the squared sign by finding the square root of 1,681 and c²*
41= c²
This is your answer! The diagonal is equal to 41. Hope this helps! Comment below for more questions.
You should use part/whole = %/100 and cross multiply. So you will get 20/x = 80/100 (whole is x because we are trying to find what whole is). now you will have 2000=80x. Now you divide 2000/80 and get 25=x. So, there are 25 costumes in total which means they need to make 5 more.
Answer:
x = 1.5
Explanation:
If you were to divide 1.2 by both sides, you would get x = 1.5
I can't see the number lines so I really can't help you with this question