Answer:
Rate = 6.56%
Step-by-step explanation:
Principal (P) = $5000
Interest (I) = $6312
Time (T) = 4 years
Rate (r) = ?
This question is involves simple interest and with the formula, we can easily plug in the values to find the rate.
S.I = P(1 + rt)
S.I = simple interest
P = principal
R = Rate
T = Time
6312 = 5000(1 + r*4)
6312 = 5000 + 5000*4r
6312 - 5000 = 20000r
1312 = 20000r
r = 1312 / 20000
r = 0.0656
Rate are calculated in percentage hence we'll multiply it by 100
R = 6.56%
Answer:
The area of the cube is 486 inches^2
Step-by-step explanation:
In this question, we are tasked with calculating the area of cube with side 9 inch.
Mathematically, the area can be calculated using the formula A = 6s^2
Now, what we need to do is to substitute 9 inches for s
Thus, A = 6 * 9^2
A = 6 * 81
A = 486 inches^2
Letter B I have done this before
Answer:
Step-by-step explanation:
Since she buys lunch for 15 days you do 12.35 times 15 which is $185.25
X-coordinate of vertex (or axis of symmetry) of a quadratic function <span><span>f<span>(x)</span></span>=a<span>x2</span>+bx+c</span><span> is given as:</span>
<span>x=−<span>b<span>2a</span></span>=−<span>b<span>12</span></span>=−2<span>b-2b = 6 --> <span>b=<span>6<span>−2</span></span>=−<span>3
</span></span><span>b = -3</span>
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