Answer:
2.5% and 2.5 · 10^-3, 0.25, 2/5, √5
Step-by-step explanation:
0.25, 2/5, 2.5 · 10^-3, 2.5%, √5
Now let's list them all in the same form, why not decimals.
0.25 = 0.25
2/5 = 4/10 = 40/100 = 0.4
2.5 · 10^-3 = 2.5 · 0.01 = 0.025
2.5% = 0.025
√5 ≅ 2.236
Answer:
Principle should be $2,667
Step-by-step explanation:
We need $3000 for a vacation to Europe in 3 years.
Using amount formula,
![A=P(1+r)^t](https://tex.z-dn.net/?f=A%3DP%281%2Br%29%5Et)
Where, P is principle (P=?)
A is amount (A=3000)
r is rate of interest (r=0.04)
t is time (t=3)
Substitute the values into formula and solve for P
![3000=P(1+0.04)^3](https://tex.z-dn.net/?f=3000%3DP%281%2B0.04%29%5E3)
![3000=P(1.04)^3](https://tex.z-dn.net/?f=3000%3DP%281.04%29%5E3)
![P=\frac{3000}{1.04^3}](https://tex.z-dn.net/?f=P%3D%5Cfrac%7B3000%7D%7B1.04%5E3%7D)
![P=2666.98](https://tex.z-dn.net/?f=P%3D2666.98)
![P\approx \$2667](https://tex.z-dn.net/?f=P%5Capprox%20%5C%242667)
Hence, Principle should be $2,667
Answer:
![xy=72](https://tex.z-dn.net/?f=xy%3D72)
Step-by-step explanation:
If x is inversely porportionaly to y, then for some constant k,
![x = \frac{k}{y}\\xy=k](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7Bk%7D%7By%7D%5C%5Cxy%3Dk)
Since y is 4 when x = 18, k is equal to 4*18=72, so the equation is:
![xy=72](https://tex.z-dn.net/?f=xy%3D72)
Answer:
6.0
Step-by-step explanation:
: (2.0+(2.0+2.0)) = 6.0
Answer:
1) 5.44, 2) 3.9
Step-by-step explanation:
1) a/b + 2b - a^2 when a = 1.4 and b = 0.2
plug in the values:
1.4/0.2 + 2(0.2) - (1.4)^2 = 7 + 0.4 - 1.96 = 5.44
2) a[b-2c]^3 - d/e when a = 2, b = -0.75, c = -1, d = 0, e = -12 5/7 (rewritten to -89/7 = 12.71)
again, plug in the values:
2[-0.75-2(-1)]^3 - 0/12.71 = 2[1.25]^3 - 0 = 2[1.95] = 3.9