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2 years ago

Please help with my math test it’s very easy

Mathematics

1 answer:

V125BC [204]2 years ago

4 0

Answer:No

Step-by-step explanation:

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What is the reciprocal of 14/19?

Afina-wow [57]

Answer:

1 5/14

Step-by-step explanation:

Flip it around: 19/14

Turn 19/14 into a mixed number which is:

1 5/14

3 0

2 years ago

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Rewrite the equation by completing the square <br> X^2+6x+9=0<br> (X+?)^2=?

Cerrena [4.2K]

Answer:

x^2 + 6x +9 = 0

(x+3)^2 = 0

(x+3)(x+3)= 0

Step-by-step explanation:

5 0

3 years ago

First-order linear differential equations

kkurt [141]

Answer:

$(1)\ logy\ =\ -sint\ +\ c$

$(2)\ log(y+\dfrac{1}{2})\ =\ t^2\ +\ c$

Step-by-step explanation:

1. Given differential equation is

$\dfrac{dy}{dt}+ycost = 0$

$=>\ \dfrac{dy}{dt}\ =\ -ycost$

$=>\ \dfrac{dy}{y}\ =\ -cost dt$

On integrating both sides, we will have

$\int{\dfrac{dy}{y}}\ =\ \int{-cost\ dt}$

$=>\ logy\ =\ -sint\ +\ c$

Hence, the solution of given differential equation can be given by

$logy\ =\ -sint\ +\ c.$

2. Given differential equation,

$\dfrac{dy}{dt}\ -\ 2ty\ =\ t$

$=>\ \dfrac{dy}{dt}\ =\ t\ +\ 2ty$

$=>\ \dfrac{dy}{dt}\ =\ 2t(y+\dfrac{1}{2})$

$=>\ \dfrac{dy}{(y+\dfrac{1}{2})}\ =\ 2t dt$

On integrating both sides, we will have

$\int{\dfrac{dy}{(y+\dfrac{1}{2})}}\ =\ \int{2t dt}$

$=>\ log(y+\dfrac{1}{2})\ =\ 2.\dfrac{t^2}{2}\ + c$

$=>\ log(y+\dfrac{1}{2})\ =\ t^2\ +\ c$

Hence, the solution of given differential equation is

$log(y+\dfrac{1}{2})\ =\ t^2\ +\ c$

8 0

3 years ago

5.3.73 Question Help

Tatiana [17]

Area of the triangle is 20x(x - 1) sq. in

Step-by-step explanation:

Step 1: Find the area of the triangle.

Height = 10x in and Base = 4(x - 1) in

Area = 1/2 × base × height

⇒ Area = 1/2 × 4(x - 1) × 10x

= 20x(x - 1) sq. in

6 0

3 years ago

6.25t=5 please help I need this to finish my assignments

vazorg [7]

Answer:

t=0.8

Step-by-step explanation:

5/6.25

4 0

2 years ago

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