Answer: 72,910
Step By Step Explaination: 7.291 x 10^4
10^4 means to move the decimal places four times.
7.921 = 79.210 = 792.10 = 7921.0 = 79,210
We have 2 equations here ( b = cost of bush and t = cost of a tree)
10b + 4t = 246........................................................(1)
5b + 3t = 147 Multiply this equation by -2:-
-10b - 6t = -294.......................................................(2)
Adding equations (1) and (2) we get:-
0 - 2t = - 48
t = -48/-2 = 24
Plug t = 24 into the first equation:-
10b + 4(24) = 246
10b = 246 - 96 = 150
b = 15
The answer is one bush costs $15 and one tree costs $24.
Answer:
90+15x+8x-2=180
Step-by-step explanation:
answer is 4
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Answer:
286 students attended
148 non students attended
Step-by-step explanation:
Given
Solving (a): Number of students
Represent students with S and non students with N
So:
--- (1)
--- (2)
Make N the subject of formula in (1)
Substitute 434 - S for N in (2)
Open Bracket
Collect Like Terms
Divide through by -2
<em>Hence; 286 students attended</em>
Solving (b):
Recall that
<em>148 non students attended</em>
