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3 years ago

Help !!!See question in image.Please show workings .

Mathematics

1 answer:

user100 [1]3 years ago

3 0

Answer:

$\frac{dy}{dx}$ = 2x + 3

Step-by-step explanation:

The gradient function is the derivative $\frac{dy}{dx}$

Differentiate using the power rule

$\frac{d}{dx}$ (a $x^{n}$ ) = na $x^{n-1}$ and $\frac{d}{dx}$ ( constant ) = 0

Given

y = x² + 3x + 1, then

$\frac{dy}{dx}$ = 2 $x^{2-1}$ + 3 $x^{1-1}$ + 0 = 2x + 3 $x^{0}$ = 2x + 3 ← gradient function

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What is 2x +3y+6x+9y

shusha [124]

Combine like terms to get 2x + 6x which is 8x and 3y + 9y which is 12y so the simplified answer is 8x + 12y

7 0

4 years ago

What is the perimeter of rhombus WXYZ?

oksian1 [2.3K]

<u>Answer</u>:

The perimeter of rhombus WXYZ is $4 \sqrt{13}$

<u>Step-by-step explanation:</u>

Step 1 :Finding length of XY

Distance formula = $\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}$

here

$x_1$ = 5

$x_2$ =3

$y_1$ = -1

$y_2$ =2

XY = $\sqrt{(3-5)^2 +(2 -(-1))^2}$

XY = $\sqrt{(3-5)^2 +(2 +1))^2}$

XY = $\sqrt{(-2)^2 +(3))^2}$

XY = $\sqrt{4 +9}$

XY = $\sqrt{(13)}$

Step 2 :Finding length of YZ

Distance formula = $\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}$

here

$x_1$ = 3

$x_2$ =5

$y_1$ = 2

$y_2$ =5

YZ = $\sqrt{(5-3)^2 +(5-2)^2}$

YZ = $\sqrt{(2)^2 +(3)^2}$

YZ = $\sqrt{4 +9}$

YZ = $\sqrt{(13)}$

Step 3 : :Finding length of ZW

Distance formula = $\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}$

here

$x_1$ = 5

$x_2$ =7

$y_1$ = 5

$y_2$ =2

ZW = $\sqrt{(7-5)^2 +(5-2)^2}$

ZW = $\sqrt{(2)^2 +(3)^2}$

ZW = $\sqrt{4 +9}$

ZW = $\sqrt{(13)}$

Step 4 :Finding length of WX

Distance formula = $\sqrt{(x_2-x_1)^2 +(y_2-y_1)^2}$

here

$x_1$ = 7

$x_2$ =5

$y_1$ = 2

$y_2$ = -1

WX = $\sqrt{(7-5)^2 +((-1)-2)^2}$

WX = $\sqrt{(2)^2 +(-3)^2}$

WX = $\sqrt{4 +9}$

WX = $\sqrt{(13)}$

Step 5: finding the perimeter of the rhombus

Perimeter= 4 X side

=> $4 \times \sqrt{13}$

=> $4 \sqrt{13}$

5 0

3 years ago

Read 2 more answers

With step by step explanation please

Tatiana [17]

The awnser issss d!!!!!!!!

3 0

3 years ago

Jom!

andrey2020 [161]

Answer:

Step-by-step explanation:

5 0

3 years ago

You sell tickets for a fundraiser. You give half of the tickets to your sister to sell. You sell 25 of your half of the tickets

hodyreva [135]

Answer:

84 tickets

Step-by-step explanation:

So first off lets add the tickets we sold to the tickets we have left. Lets x equal the amount of tickets we started with before selling.

25+17=x

Add them up.

42=x

We started with 42 tickets. To find how many tickets we had before spiting the tickets. We need to multiply our tickets by 2 since we had half. Let y be this number

42*2=y

Multiply them up

84=y

We started with 84 tickets.

8 0

3 years ago

Help !!!See question in image.Please show workings .​​

Help !!!See question in image.Please show workings .