Answer:
56
Step-by-step explanation:
T+B = 119
T=B-7
B-7 + B = 119
2B = 126
B = 63 years old
T= 63-7 = 56 years old
Answer:
(-2,8)
Step-by-step explanation:
To solve by substitution, first isolate a variable in one of the equations. Then, substitute the value of the variable from that equation into the other equation, giving either the x or y value of the solution. Finally, substitute that answer back into one of the two equations, finding the other missing value.
1) For both of the equations, the variable y has already been solved for. So, we can choose to substitute whatever y equals in one equation for the y in the other equation. Any choice is fine - I chose to substitute -4x for the y in y = 3x + 14.
2) Now that x has been solved for, substitute the value for the x in one of the equations. Any choice is fine here, too - I chose to substitute -2 in y = -4x:
3) Both the x and y value of the solution has been solved for. x = -2 and y = 8. Therefore, the solution is (-2,8).
Answer :-
- loss = <em> </em><em>100</em><em>0</em><em>$</em><em> </em>
- 4000
Step by step explanation :-
1#
Profit on 3000 bags of white cement sold = 3000 × 8 = 24000
loss on 5000 bags of grey cement sold = 5000 × 5 = 25000
<u>Alternatively</u><u>:</u><u> </u>
- Net loss = ( 25000 - 24000 ) = 1000$
- profit/ loss = $ [3000 × 8 - 5000 × 5 ]
- $ [24000 - 25000]
- -1000$
<em>As</em><em> </em><em>the</em><em> </em><em>result</em><em> </em><em>of</em><em> </em><em>transaction</em><em> </em><em>is</em><em> </em><em>negative</em><em>/</em><em> </em><em>loss</em><em> </em>
2#
- Loss on the scale of 6400 grey bags = 6400 × 5 = 32,000
<em>In</em><em> </em><em>order</em><em> </em><em>to</em><em> </em><em>have</em><em> </em><em>no</em><em> </em><em>profit</em><em>, </em><em> </em><em>profit from the </em><em>Cello </em><em>white cement should be 32</em><em>0</em><em>0</em><em>0</em><em>.</em><em> </em>
- Number of white cement bags to be sold = 32000 / 8 = 4000
<em>4000 why cement bags and 6400</em><em> </em><em>grey</em><em> </em><em>cement</em><em> </em><em> </em><em>bags</em><em> </em><em>are sold in order to have no profit and </em><em>n</em><em>o</em><em> </em><em>loss </em>
<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>~</em>
C. 8.6 units because if you use the Pythagorean thereom and square the bottom side and the left side and add them, you get the square root of 74 which is 8.6023.... and you round it too 8.6