The formula for simple interest is I = prt, where I is the amount of interest, p is the principal invested, r is the rate as a decimal number and t is the amount of time. Substituting our given information we have
128 = p(0.016)(2) ----- 1.6% = 1.6/100 = 0.016
128 = p(0.032)
Divide both sides by 0.032:
128/0.032 = p(0.032)/0.032
4000 = p
He needs to invest $4000.

7 0

3 years ago

Simplify The Expression 2y - y + 4 + y y=3

Brut [27]

-0.5

Step-by-step explanation:

um bc it is the answer

7 0

2 years ago

Leo sold candy bars for a fundraiser. He spent $25 on a box of candy bars and sold them for $2 each. His profit (after earning b

kykrilka [37]

As given by the question

There are given that the $2c-$25=$69.

Now,

$\begin{gathered} $2c-$25=$69$ \\ $2c-$25+25=$69$+25 \\ 2c=$69$+25 \\ 2c=94 \\ c=\frac{94}{2} \\ c=47\text{ bars} \end{gathered}$

Hence, the correct answer is C.

4 0

11 months ago

Write an equation of the line that is perpendicular to y = 1/2

atroni [7]

Answer:

the equation of the line that is perpendicular to y = 1/2x + 3 and passes through the point (10, -5)

= -5 = -2x + 15

Step-by-step explanation:

Write an equation of the line that is perpendicular to y = 1/2x + 3 and passes through the point (10, -5).

Using the slope intercept equation,

y = mx +c

m = slope = 1/2

For two lines to be perpendicular, the product of their slopes is -1

Let the slope of the other line be m2

m1×m2 =-1

1/2×m2 = -1

m2 = -1/(1/2) = -2

Slope of line = -2

For points (10, -5), x = 10, y =-5

-5 = -2× 10 +c

-5 = -20+ c

c = -5+20= 15

the equation of the line that is perpendicular to y = 1/2x + 3 and passes through the point (10, -5)

-5 = -2x + 15

6 0

3 years ago