Answer:

Step-by-step explanation:
Let
x -----> the number of slabs of butter
y ----> the number of cups of butter
we know that
The ratio is

so

That means-----> The number of slabs of butter must be equal to the number of cups of butter
In this problem
we have

Remember that

so
The number of slabs of butter needed must be equal to the number of cups of butter
therefore

1) 43
2) 21
step by step:
Both triangles are right triangle which means they're equal to 90.
1) 23+24+X= 90
47+x= 90
x= 90-47
X= 43
2) 30+39+X= 90
69+X= 90
X= 90-69
X= 21
Answer:
C. Decreasing
Step-by-step explanation:
The graph is decreasing because the graphed line read from left to right is slanting down.
Hope this helps!
If not, I am sorry.
Answer:
the first one
the first one Step-by-step explanation:
the first one Step-by-step explanation:from the formula Un =ar^n-1
where a is 2
where a is 2 r = 20/2=10
where a is 2 r = 20/2=10 so Un= 10×2^n-1
that's all.....have fun