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Dafna1 [17]
3 years ago
6

30 POINTS CAN SOMONE PLS ANSWER THIS :(((( read it then answer tyyy!!!

Mathematics
1 answer:
krek1111 [17]3 years ago
3 0

Answer:

the answer is A

Step-by-step explanation:

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Mia borrowed some money from her friend in order to help buy a new video game system. Mia agreed to pay back her friend $8 per w
never [62]

Answer:

L = 80 - 8t

Step-by-step explanation:

Given

Debt = \$80

Weekly\ Payment = \$8

Required

Write an equation to determine the payment at a given week

At week 1, she'd have paid $8

At week 2, $16

Week 3, $24

..

.

This leads to arithmetic progression (AP):

8, 16, 24.....

To further solve, we'll make use of AP formula

T_n = a + (n - 1)d

In this case;

t = n

d = 16 - 8 = 24 - 16 = 8

a = 8

So, the equation becomes

T_n = 8 + (t - 1) * 8

T_n = 8 + 8t - 8

Collect Like Terms

T_n = 8t + 8 - 8

T_n = 8t

The above represents the amount paid at a particular week;

Amount owed, L is then calculated as follows;

L + T_n = 80

L = 80 - T_n

L = 80 - 8t

7 0
4 years ago
Determine whether each first-order differential equation is separable, linear, both, or neither. 1. ????y????x+????xy=x2y2 2. y+
Mkey [24]

Answer:

a) Linear

b) Linear

c) Linear

d) Neither

See explanation below.

Step-by-step explanation:

a) \frac{dy}{dx} +e^x y = x^2 y^2

For this case the differential equation have the following general form:

y' +p(x) y = q(x) y^n

Where p(x) =e^x and q(x) = x^2 and since n>1 we can see that is a linear differential equation.

b) y + sin x = x^3 y'

We can rewrite the following equation on this way:

y' -\frac{1}{x^3} y= \frac{sin (x)}{x^3}

For this case the differential equation have the following general form:

y' +p(x) y = q(x) y^n

Where p(x) =-\frac{1}{x^3} and q(x) = \frac{sin(x)}{x^3} and since n=0 we can see that is a linear differential equation.

c) ln x -x^2 y =xy'

For this case we can write the differential equation on this way:

y' +xy = \frac{ln(x)}{x}

For this case the differential equation have the following general form:

y' +p(x) y = q(x) y^n

Where p(x) =x and q(x) = \frac{ln(x)}{x} and since n=0 we can see that is a linear differential equation.

d) \frac{dy}{dx} + cos y = tan x

For this case we can't express the differential equation in terms:

y' +p(x) y = q(x) y^n

So the is not linear, and since we can separate the variables in order to integrate is not separable. So then the answer for this one is neither.

4 0
3 years ago
Find the median and mean of the data set below:<br> 24,37,36,8,17,10
IgorLugansk [536]

Answer:

The Median is 15

The Mean is 22

5 0
3 years ago
Find the area of the triangle<br> The area is __yd^2
MAVERICK [17]

Answer:

area of triangle = 4.5*6/2 = 13.5 sq.yd.

Step-by-step explanation:

The area of a right triangle is half of the product of the sides adjacent to the right angle.

Here the sides adjacent to the right angle are 6 yd and 4.5 yd.

Therefore the

area of triangle = 4.5*6/2 = 13.5 sq.yd.

7 0
3 years ago
Write the standard form of the equation of each line given the slope and y-intereept.
Elena-2011 [213]

Answer:

5y + 15x = 25, 9x - y = -4

Step-by-step explanation:

The standard form is Ax + By = C. We can make this simple by first creating the slope intercept equations of both questions:

1.  y = (-3/5)x + 5

2. y = 9x + 4

For the first one, we must first get rid of the denominator by multiplying everything by 5, so we get 5y = -15x + 25, and then you can add 3x to both sides to arrive at your first standard eqn, 5y + 15x = 25.

For the second, all you need to do is swap the y and the 4, subtracting both y and 4 from each side, arriving at 9x - y = -4

6 0
3 years ago
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