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3 years ago

12

What ever link you send me i will open and mark brainlest

1 answer:

nordsb [41]3 years ago

7 0

Answer:

ok

Princess_Anyla/nka8iza0q6lm8dm1

Step-by-step explanation:

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Cora got a $1200 loan for 2 years. She paid $90 in interest. What was her interest rate? (*hint: you will get a decimal as an an

bearhunter [10]

Answer:

To use the simple interest formula, I = Prt, we substitute in the values for ... Do you know that banks pay you to let them keep your money? ... The rate of interest is usually expressed as a percent per year, and is ... Yes, $90 is reasonable. ... Find the principal invested if $178 interest was earned in 2 years

Step-by-step explanation:

4 0

3 years ago

How to find the side length of a square

Tju [1.3M]

Add all sides together to find the length of each side

8 0

3 years ago

(x+5)²=81<br><br><br><br><br> need help quick

Vilka [71]

Square root each side
x-5=positive/negative 9
x=14, and -4

5 0

3 years ago

Solve the decay equation y' = -ky using the integrating factors method. Show work

Alex777 [14]

Answer:

$y=\frac{c}{e^{kx}}$

Step-by-step explanation:

$\frac{\mathrm{d} y}{\mathrm{d} x} =-ky$

$\frac{\mathrm{d} y}{\mathrm{d} x} +ky=0$

comparing with equation

$\frac{\mathrm{d} y}{\mathrm{d} x} + Py=Q(x)$

$I.F.= e^{\int P dx}$

$I.F.= e^{\int k dx}$

$I.F.= e^{kx}$

$y=\frac{1}{I.F.} ( \int {Q(x)} dx +c)$

$y=\frac{1}{e^{kx}} ( \int {0} dx +c)$

$y=\frac{c}{e^{kx}}$

7 0

4 years ago

On a farm there are three-legged-cows and chickens. There are total of 127 heads and 353 legs. How many three-legged-cows are on

olga nikolaevna [1]

Answer: There are 99 three-legged-cows and 28 chickens.

Step-by-step explanation:

Let x be the number of three-legged-cows and y be the number of chickens.

Number of legs in chicken = 2

The according to the question, we have the following equations :-

$\text{For heads }x+y=127------(1)\\\\\text{For legs }3x+2y=353------(2)$

Multiplying 2 to the equation (1), we get

$2x+2y=254--------(3)$

Now, subtract equation (3) from (2), we get

$x=353-254=99$

Put x= 99 in (1), we get

$99+y=127\\\\\Rightarrow\ y=127-99=28$

Hence, there are 99 three-legged-cows and 28 chickens.

6 0

3 years ago