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PilotLPTM [1.2K]
3 years ago
13

What's the equation of the line perpendicular to y=-3/2x+4 through the point ( 2,-3)

Mathematics
1 answer:
Korvikt [17]3 years ago
6 0
Because it's perpendicular, you know that they must have the same slope, -3/2. So, just factor that and the point into the slope-point form to get

y = -3/2x


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Cooper invested $3,100 in an account paying an interest rate of 2%
Liula [17]

Answer:

Robert will have $481 more in his account than Cooper.

Step-by-step explanation:

Compound interest:

The compound interest formula is given by:

A(t) = P(1 + \frac{r}{n})^{nt}

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per year and t is the time in years for which the money is invested or borrowed.

Continuous compounding:

Similar to compound interest:

A(t) = P(1 + r)^t

Cooper:

Cooper invested $3,100 in an account paying an interest rate of 2% compounded quarterly. This means that P = 3100, r = 0.02, n = 4

After 12 years is A(12). So

A(t) = P(1 + \frac{r}{n})^{nt}

A(12) = 3100(1 + \frac{0.02}{4})^{4*12}

A(12) = 3938.5

Cooper will have $3938.5 in his account.

Robert:

Robert invested $3,100 in an account paying an interest rate of 3 % compounded continuously. So P = 3100, r = 0.03.

After 12 years.

A(t) = P(1 + r)^t

A(12) = 3100(1 + 0.03)^{12}

A(12) = 4419.9

Robert will have $4419.9 in his account.

How much more money would Robert have in his account than Cooper, to the nearest dollar?

4419.9 - 3938.5 = 481.4

To the nearest dollar, Robert will have $481 more in his account than Cooper.

3 0
3 years ago
1 Dentro de seis años tendré el doble de la edad que tenía hace cuatro años. ¿Qué edad tendré dentro de nueve años?
nexus9112 [7]

Answer:

23 años

Step-by-step explanation:

Para resolver la situación, consideremos que x es la edad de la persona. Sabemos que dentro de seis años esta tendrá el doble de la edad que tenía hace cuatro años. La edad dentro de 6 años se puede expresar como x+6 y esto será igual al doble de la edad que tenía hace cuatro años, lo que se puede expresar como 2(x-4). De acuerdo a esto:

x+6=2(x-4)

x+6=2x-8

6+8=2x-x

x=14

Ahora que sabemos que la edad de la persona es 14 años, le sumamos 9 y esto da como resultado 23 y esta es la edad que la persona tendrá en 9 años.

4 0
3 years ago
Could you give me an example of a linear equation with a variable on both sides of the equal sign? Please don't look one up. You
lisov135 [29]

Answer:

4x + 6 = x

5x + 8 = x

6 0
3 years ago
Read 2 more answers
Solve this equation: 2s + s + 12 = 132.<br> a. s = 9<br> B. s = –30<br> C. s = 120<br> D. s = 40
madam [21]
The equation given in the question is
2s + s + 12 = 132
3s + 12 = 132
3s = 132 - 12
3s = 120
s = 120/3
   = 40
From the above deduction we can see that the value of the unknown variable comes out to be exactly 40. This is possible because there is a single unknown variable and a single equation to get the value of the variable from. So the correct option among all the options given in the question is option "D".
8 0
3 years ago
Read 2 more answers
PLEASE HELP!!! solve the right triangle​
DIA [1.3K]

Answer:

UV = 4.5 (not rounded)

TV = 3√3

m∠U = 60˚

Step-by-step explanation:

UV = Use sin function since you’re finding the hypotenuse with a given angle and opposite side.

sin(30) = 9/UV

9sin(30) = UV

4.5 = UV

TV = Use Tangent function (opp. over adj.) since you’re finding the adjacent side with a given angle and opposite side.

tan(30) = 9/TV

9tan(30) = TV

3√3 = TV

m∠U = Sum of all interior angles of a triangle is 180˚:

90˚ + 30˚ = 120˚

180˚ - 120˚ = 60˚

Hope this helps :)

7 0
3 years ago
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