Answer:
C and e
Step-by-step explanation:
the 50r represents the commision he receives for each refrigerator he sells, and the 250 is the base salary and it’s bigger than, >, because he needs to earn MORE than 900 and you get D by solving the inequality, 50r >900, r>15
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we can divide this shape into two parts
(1) Hemisphere:
we can see that
radius is 8
now, we can use formula for volume
(2) Cylinder:
radius is 8
height is 7
we can use formula
now, we can add them to find total volume
..............Answer
Correct answer: 6/5 or 1 and 1/5 or 1.2 (pick your favorite form)
This actually technically can't be answered without more information as all we know is that the point (250, 300) exist somewhere on this function describing royalties. However, it is safe to assume that James earns $0 when he is selling 0 books, so the point (0,0) also exists.
Using this information, the formula for slope (rate of change) is rise over run, more mathematically expressed m = (y_2 - y_1) / (x_2 - x_1)
In this case, m = (300 - 0) / (250 - 0) = 300/250 = 6/5 = 1.2
Answer:
18 parts of the 25% acid solution and 12 parts of the 50% acid solution
Step-by-step explanation:
(a) Let the system of equations be
(1) A × x + B × y = 0.4 × 30
and A + B = 30
where x = 25% acid solution and y = 50% acid solution
Simplifying, we get
A × 0.25 + B × 0.5 = 0.4 × 30 = 12
or (i)A + 2 × B = 48
and (ii) A + B = 30
b) See the attached graph
as the 25% acid solution is increasing the 50% acid solution also increases
c) From the equations
(i)A + 2 × B = 48
and (ii) A + B = 30
we get from equation (ii) A = 30 - B
Substituting for A in equation (i) we get
A + 2 × B = 48 ▶ 30 - B + 2 × B = 48
or 30 + B = 48 or B = 12
and A + B = 30 or A = 30 - B = 30 - 12 = 18
A = 18 and B = 12