Answer: wow this is hard so i don't know this
Step-by-step explanation:
Answer:
11.4
20/100 = x/57
Step-by-step explanation:
It is perhaps simplest just to translate the given English sentence into a mathematical sentence.
... 20% ... ... of ... 57 ... is ... what number
... 20/100 ... × ... 57 .... = ... what number . . . . . . . . translation to math sentence
... 11.4 = what number . . . . . . . . carry out the multiplication
_____
If you're asked to write this as a proportion, you can write it like this:

You can solve this proportion by multiplying by 57 (the denominator under "what number"). Doing so gives you the same arithmetic sentence as shown above.
Answer:
Step-by-step explanation:
the base is a square, and then there are four triangles that meet at their tip.
so you need to find the area of the base, and the four triangles.
base-l*w=7*7=49
triangles=1/2*b*h*4=1/2*7*10*4=35*4=140
140+49=189
Answer:
D)
Step-by-step explanation:
First we have to subtract 5 from both sides

Now, square both sides

x - 6 = 49
Now, add 6 to both sides
x - 6 +6 = 49 + 6
x = 55
Answer:
60
Step-by-step explanation: