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4 years ago

What is 2x+13-5=7x-30

Mathematics

2 answers:

WARRIOR [948]4 years ago

6 0

X = 38/5. Plz plz plz give me brainiest answer I only need 4 more to rank up. If u do I will show my work.

kogti [31]4 years ago

3 0

Solve for x by simplifying both sides of the equation then isolating the variable.

x = 38/5

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Which of the coordinate points below will fall on a line where the constant of proportionality is 1/4? Select all that apply. A)

kompoz [17]

Answer:

A) (4,1) C) (12,3) D) (20,5)

Step-by-step explanation:

Required

Which has a constant of proportionality of 1/4

To solve this, we make use of:

$y = kx$

Where k is the constant of proportionality.

Solve for x

$k = y/x$

Testing the given options

A) (4,1)

$k = y/x$

$k =1/4$

B) (8,12)

$k = y/x$

$k =12/8$

$k =3/2$

C) (12,3)

$k = y/x$

$k = 3/12$

$k = 1/4$

D) (20,5)

$k = y/x$

$k = 5/20$

$k = 1/4$

E) (12,6)

$k = y/x$

$k =6/12$

$k =1/2$

4 0

3 years ago

"(b) use part (a) to find a power series for f(x) = 1 (4 + x)3 ."

Firdavs [7]

Assuming

$f(x)=\dfrac1{(4+x)^3}$

Recall that for $|x|$ ,

$\displaystyle\sum_{n\ge0}x^n=\frac1{1-x}$

Denote the above by $s(x)$ . Then

$s'(x)=\displaystyle\sum_{n\ge1}nx^{n-1}=\frac1{(1-x)^2}$
$s''(x)=\displaystyle\sum_{n\ge2}n(n-1)x^{n-2}=\frac2{(1-x)^3}$

Now,

$\dfrac1{(4+x)^3}=\dfrac1{4^3}\dfrac1{\left(1-\left(-\frac x4\right)\right)^3}=\dfrac1{2^7}\dfrac2{\left(1-\left(-\frac x4\right)\right)^3}$

which means we have

$f(x)=\dfrac1{2^7}s''(x)=\dfrac1{128}\displaystyle\sum_{n\ge2}n(n-1)\left(-\frac x4\right)^{n-2}$

which is valid for $\left|-\dfrac x4\right|$ , or $|x|$ .

4 0

3 years ago

Can someone please help me find find the area of the shaded region for 2 figures please? In the second figure it’s impossible to

Ainat [17]

Answer:

You CAN do it. triangle with the circle. find area of triangle first and subtract circle. (8*8)/2 = 32. minus circle. (2.5*pi^2) = 24.674011. so we have 32 - 24.7 (rounded) = 7.3 for triangle. as for the other? divide it into segments. we have a rectangle on bottom followed by 2 triangles on top of that rectangle. Recangle height is 2 * width. The width is 8 as we can see the top. 2*8= 16. plus the triangles. we know the triangle height is 6 minus the 2 from the rectangle height so 6-2=4 times the width which is the rectangle width minus the 6 from the middle divided by 2 because there are 2 triangles. 8-6=2/2 = 1. height * width = 4 divide by 2 = 2. that is the area of one triangle. but because there are 2 triangles multiply by 2. 2*2 = 4. 16+4=20 for the area of the second figure.

Step-by-step explanation:

6 0

4 years ago

HelP me plz i'll give brainliest or whatever

aivan3 [116]

The answer is d

explanation: its right in between 50 and 60 making it 55, and the picture is showing it as an angle.

3 0

4 years ago

WILL GIVE BRAINLIEST!!! Solve the equation cos(x)sin(7x)=cos(3x)sin(5x)

Sveta_85 [38]

Answer:

CACULATOR: shift solve= ---> x= π

Step-by-step explanation:

3 0

3 years ago

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