Answer:
-14
Step-by-step explanation:
a(3)=a(2)-17=a(1)-17-17=20-17-17=-14
Answer:
-2•5 (last one)
Step-by-step explanation:
Jumps of '-2' five times, from 0
So 0 + (-2)×5
Which is the same as -2•5
Answer:
A=-2 B=17
Step-by-step explanation:
X= # of multiple choice questions
y= # of word problem questions
EQUATION 1:
x + y= 25
EQUATION 2:
3x + 4y= 90
STEP 1:
solve for one variable in equation 1
x + y= 25
subtract y from both sides
x= 25 - y
STEP 2:
substitute x=25-y in equation 2
3x + 4y= 90
3(25-y) + 4y= 90
75 - 3y + 4y= 90
75 + y= 90
subtract 75 from both sides
y= 15 word problems
STEP 3:
substitute y value to find x
x + y= 25
x + 15= 25
x= 10 multiple choice questions
ANSWER: There are 15 word problems and 10 multiple choice questions.
Hope this helps! :)
Answer:
i am pretty sure 90
Step-by-step explanation:
