Using the Pythagorean theorem we have (hypotenuse)^2 = (base)^2 +(side)^2
so (side)^2 =(20)^2- (8)^2 =336 and now side is square root of 336 = 18.33
answer is 18..33
Answer:
2.5 -1.5
Step-by-step explanation:
Answer:
9x
Step-by-step explanation:
X is an unknown variable so just leave x as it is
Because the (2x) and the (7x) are being multiplied together they are almost seen as their own category of things
Think about having two bananas in a bowl. I just threw in seven more to get a total of nine bananas in the bowl.
It's the same thing when you have a variable right next to a number! add them together as if they are alike terms.
2+7=9 therefore your answer should be 9x
Let
x-------------> number of baseballs
y-------------> number of bats
we know that
x+y=100----------------> x=100-y --------------> equation 1
4.5x+20y=822 ------------------------> equation 2
<span>I substitute 1 in 2
</span>4.5*(100-y)+20y=822----------------> 450-4.5y+20y=822-----> 15.5y=372
y=372/15.5-----------> y=24
x+y=100------------> x=100-24---------> 76
the answer is
number of baseballs are 76
number of bats are 24