All categories

2 years ago

Please help me i dont kniw how to do this..

Mathematics

1 answer:

fenix001 [56]2 years ago

4 0

Answer: x=5

a+6=2-6

X-1-b-c. X-1-c-a. x-1-a-b
———- +. -———. +. ———-=3
a. b. c

x-1 a+2. x-1. b-2. x-1
—— + ——- + ——- +. ——- + ——- +
a. a. b b c

c-2
——=3
c

X-1 (1 + 1 + 1) + 3 - 2 ( 1 + 1 + 1) =3
- - - - - -
a. b. c. a. b. c

( 1 + 1 + 1) (x-1-2)=0
- - -
a. b. c

x-1=2

x-1=4

x=5

You might be interested in

Find the equation of this line. y= [?]x+[?]

DochEvi [55]

Answer:

$y=3x-4$

Step-by-step explanation:

Hi there!

Slope-intercept form: $y=mx+b$ where m is the slope and b is the y-intercept (the value of y when x=0)

1) Determine the slope (m)

$m=\displaystyle\frac{y_2-y_1}{x_2-x_1}$ where two points that fall on the line are $(x_1,y_1)$ and $(x_2,y_2)$

On the graph, two points are highlighted for us: (0,-4) and (2,2). Plug these into the formula:

$m=\displaystyle\frac{2-(-4)}{2-0}\\\\m=\displaystyle\frac{2+4}{2}\\\\m=\displaystyle\frac{6}{2}\\\\m=3$

Therefore, the slope of the line is 3. Plug this into $y=mx+b$ :

$y=3x+b$

2) Determine the y-intercept (b)

$y=3x+b$

Recall that the y-intercept occurs when x=0. Given the point (0,-4), the y-intercept is therefore -4. Plug this into $y=3x+b$ :

$y=3x+(-4)\\y=3x-4$

I hope this helps!

5 0

3 years ago

A car goes around a curve with a radius of 65 meters while traveling at 22 m/s. Calculate the car's centripetal

valentinak56 [21]

Answer:

7.4 m/ $s^{2}$ .

Step-by-step explanation:

When an object rotates around a fixed center in a circular path of radius R then centripetal force acts on the object ,

Centripetal acceleration equals

$\frac{v^{2} }{r}$ Where,

v is the velocity of the object rotating in circular motion

and r is the radius of the circle.

Here , r = 65 meters.

v = 22 m/s.

Thus centripetal acceleration equals $\frac{22^{2} }{65}$

= 7.44 m/ $s^{2}$ .

Thus option A is the best option i.e., 7.4 m/ $s^{2}$ .

8 0

4 years ago

Combine Radicals/Fractional Exponents

Crazy boy [7]

$\mathsf{Given :\;\;\dfrac{5x^{\dfrac{-3}{2}}y^{-2}}{\sqrt[3]{64x^3y^3}}}$

$\mathsf{\implies \dfrac{5x^{\dfrac{-3}{2}}y^{-2}}{\sqrt[3]{4^3x^3y^3}}}$

$\mathsf{\implies \dfrac{5x^{\dfrac{-3}{2}}y^{-2}}{\sqrt[3]{(4xy)^3}}}$

$\bigstar\;\;\textsf{We know that : \boxed{\mathsf{\sqrt[n]{a} = a^{\dfrac{1}{n}}}}}$

$\mathsf{\implies \dfrac{5x^{\dfrac{-3}{2}}y^{-2}}{{(4xy)^{\dfrac{3}{3}}}}}$

$\mathsf{\implies \dfrac{5x^{\dfrac{-3}{2}}y^{-2}}{{4xy}}}$

$\mathsf{\implies \left(\dfrac{5}{4}\right) \left(\dfrac{x^{\dfrac{-3}{2}}}{{x}}\right)\left(\dfrac{y^{-2}}{y}\right)}$

$\bigstar\;\;\textsf{We know that : \boxed{\dfrac{a^m}{a^n} = a^{m - n}}}}$

$\mathsf{\implies \left(\dfrac{5}{4}\right) x^{\left(\dfrac{-3}{2} - 1\right)}}y^{(-2 - 1)}}$

$\mathsf{\implies \left(\dfrac{5}{4}\right) x^{\left(\dfrac{-3 - 2}{2}\right)}}y^{-3}}$

$\mathsf{\implies \left(\dfrac{5}{4}\right) x^{\left(\dfrac{-5}{2}\right)}}y^{-3}}$

$\textsf{Comparing the above with $\mathbf{ax^by^c}$, We can notice that :}$

$\bigstar\;\;\mathsf{a = \dfrac{5}{4}}$

$\bigstar\;\;\mathsf{b = \dfrac{-5}{2}}$

$\bigstar\;\;\mathsf{c = -3}$

$\implies \mathsf{Product\;of\;a,\;b\;and\;c = \left(\dfrac{5}{4}\times \dfrac{-5}{2} \times -3\right)}$

$\implies \mathsf{Product\;of\;a,\;b\;and\;c = \dfrac{75}{8}}$

7 0

4 years ago

Identify the coefficient and exponent of these very large and very small numbers represented in scientific notation. Identify ho

vampirchik [111]

Answer:

a = 589 and b = 4

c = 521 and d = -7

Step-by-step explanation:

Here, we are to identify coefficient and exponent.

5,890,000 can be represented as 589 * 10,000

Thus we have 5,890,000 as 589 * 10^4

So a = 589 and b = 4

0.0000521 = 521 * 10^-7

so c = 521 and d = -7

6 1

3 years ago

Read 2 more answers

the length of a rectangle is 2 units less than a number, and the width is 4 units more than the length. which of the following e

cestrela7 [59]

L=n-2, W=4+L=n+2

A=LW, since L=n-2 and W=n+2 we have:

A=(n-2)(n+2) so it could be this expression or the expansion

A=n^2-4

4 0

4 years ago

Please help me i dont kniw how to do this..​

Please help me i dont kniw how to do this..