To find out the answer,we can test it out one by one:
The original expression: 6×(2+8)=60
A. 6x(8+2)= 6x10 = 60✅
B. (6×2)+8 = 24+8 = 34
C. (8+2)x6 = 10×6 = 60✅
D. 6x2÷6×8 =12÷6×8 = 2×8 = 16
As A. and C. equals to the original expression, the answer is A. and C.
3. Let a taco's cost be t and the cost of a glass of milk be m:t + m = 2.1, 2t + 3m = 5.15. This is choice D.
4. The only difference is that 4 has been added to the y-value, so the graph remains congruent, but it is moved up along the y-axis, which is choice H.
5. The total number of sandwiches sold is 500, so the fraction of ham-and-cheese sandwiches is 75/500 = 3/20. Since an entire circle is 360 degrees, the fraction for the ham-and-cheese sandwiches is (3/20)(360) = 54 degrees, which is choice C.
IV : 17 > 2 or 6 < 9......these are true....17 is greater then 2 and 6 is less then 9
I think the answer is the 2nd choice = 1 inch wide and 8 inches long because he's making a scale and it has to be simplified.
Hope this helped☺☺
Answer:
(a) v = 1536640/ m^2.
(b) (i) 1186 m/s.
(ii) 52.4g .
Step-by-step explanation:
(a) The equation is v = k / m^2 where k is the constant of variation.
When m = 49, v = 640 so 640 = k / 49^2
k = 640 * 49^2
= 1,536,640.
Therefore the relation is v = 1536640/ m^2.
(b) (i)
When m = 36g, the speed v = 1536640 / 36^2
= 1186 m/s.
(ii) When the speed is 560 m/s :-
560 = 1536640 / m^2
m^2 = 1536640 / 560
= 2744
mass m = √2744
= 52.4g
