Help on how to figure this out

Find the simple interest. $18,981 at 9% for 208 days

FrozenT [24]

Since the interest is simple, you don't have to compound it multiple times. You just need to divide the 208 days with 365days. The calculation would be:

interest= principal * number of year * rate
interest= $18,981 * 208/365 * 9%=$973.49

5 0

3 years ago

5 of 10<br> What is the decimal multiplier to increase by 2.8%

Verdich [7]

Answer:

1.028

Step-by-step explanation:

The original amount is 100%

Add 2.8% to 100% = 102.8%

Now divide by 100 to find the decimal multiplier

102.8 ÷ 100 = 1.028

hope this helps :)

4 0

3 years ago

Find the length of “b”, to the<br> nearest tenth, using the<br> Pythagorean Theorem.

Tresset [83]

Answer: b= 11.2

10^2 + b^2 = 15^2

100 + b^2 = 225

b^2 = 125

b= $\sqrt{125}$

b= 11.2

Step-by-step explanation:

3 0

3 years ago

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Consider the function f(x) = x² – 3x – 4 and complete parts (a) through (C). (a) Find f(a+h); f(a+h)-f(a) (b) Find (c) Find the

Artist 52 [7]

Answer:

(a)

$f(a+h)=a^{2} +2ah+h^{2} -3a-3h-4$

(b)

$f(a+h)-f(a)=2ah+h^{2} -3h$

(c)

$\frac{df(a+h)}{dx} \left \{ { \atop {a=7}} \right. =2h+11$

Step-by-step explanation:

(a)

Simply evaluate (a+h) in the function:

$f(a+h)=(a+h)^{2} -3(a+h)-4=a^{2} +2ah+h^{2} -3a-3h-4$

(b)

Evaluate (a) in the function:

$f(a)=a^{2} -3a-4$

Using the previous answers lets calculate f(a+h)-f(a)

$f(a+h)-f(a)=a^{2} +2ah+h^{2} -3a-3h-4-(a^{2} -3a-4)=2ah+h^{2} -3h$

(c) To find the rate of change of f(a+1) when a=7 we need to calculate its derivate at that point:

$\frac{df(a+h)}{dx} \left \{ { \atop {a=7}} \right. =2a+2h-3=2(7)+2h-3=2h+14-3=2h+11$

7 0

3 years ago

Anyone know the answer to this?

jeyben [28]

3x-5+19-x+2x
5x-x=14
4x=14

3 0

3 years ago

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