Answer:
b=9,a=12
Step-by-step explanation:
I solved by substitution:
b = 3/4a ---> plug this into the other equation
a + b = 21 is now a + 3/4a = 21
Reduce: 7/4a = 21
a = 12
Now solve for b:
b=3/4a is now b=3/4(12)
b=9
Answer:
He runs 2.5 meters per second
Step-by-step explanation:
all you do is divide 75/30 and the answer is 2.5.
Perimeter is sum of all the sides ,
so, perimeter will be 7 + 9 + x = 16 + x
it will be more than 16 for sure
Answer:
10 square units
Step-by-step explanation:
you have 4 complete squares
2 halves, which makes 1 square
and 10 other oddly divided squares which would complete one another perfectly if you put them together 2 by 2.
First, you need to find the slope of HI.
Find two points. (On the line)
(-5,5) (1,9) I’m just going to use the points for H and I.
Plug it into the slope formula.
M= (y2-y1)/(x2-x1)
M= (9-5)/(1-(-5) Switch the sign to be positive, two negatives equal a positive.
M= 4/6
Now, you just need to find the opposite reciprocal for the slope of the perpendicular line.
Flip 4 and 6. Make it negative.
-6/4
Simplify.
-3/2 or -1.5
I hope this helps!
~kaikers