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NikAS [45]
3 years ago
9

What is the answer to this?! 2/3x−1/5x=x−1

Mathematics
2 answers:
oee [108]3 years ago
4 0

Answer: x = 15/8

Explanation: I used a calculator on a website.

andrezito [222]3 years ago
3 0

Answer:

15/8

Step-by-step explanation:

Hope this helps: )

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If all of the diagonals are drawn from a vertex of an octagon, how many triangles are formed?
Lynna [10]
There are 6, you'd think there would be 8 but the answer is actually 6. A diagonal is a line segment that connects to vertices, the two vertices chosen do not count when forming the triangle, two vertices that are adjacent to that chosen vertex are NOT included when forming the diagonal. It's confusing, but I hope this helps. If you have any follow up questions I'd love to answer them.
3 0
3 years ago
Read 2 more answers
PLS HELP ASAP ILL GIVE BRAINLKEST THANKS
Julli [10]

Answer:

D. (6,3)

Step-by-step explanation:

To the find which point can be located on the line you will have to find the point-slope form

The formula for point-slope form is y=mx+b

m is slope

b is y-intercept

Since we already know the slope we can just replace it:

y=1/2x+b

Now we need to find the y-intercept

We can do this by distributing them with (4,2)

As you remember in point the digits are in x and y

(x,y) so we can tell that 4 is x and 2 is y

Now we can substitute x with 4 and y with 2

2=1/2(4)+b

Multiply 1/2 and 4

which is 2

2=2+b

Thus b=0

So the slope intercept form is y=1/2x

Now we can substitute the other points:

For (5,2):

2=5/2

Which is incorrect since 2 does not equal 5/2

For (2,3):

3=1/2(2)

Which is

3=1

Which is incorrect since 3 does not equal 1

For (3,4)

4=1/2(3)

Which is

4=3/2

Which is incorrect since 4 does not equal 3/2

For (6,3)

3=1/2(6)

Which is

3=3

Which is correct since 3 does equal to 3

Hope this helps!

8 0
2 years ago
Which is true about the volume or surface area of these prisms?
r-ruslan [8.4K]
<span>A.


The surface area of A is greater than the surface area of B.</span>
6 0
3 years ago
1. Drag and drop an answer to each box to correctly complete the derivation of a formula for the area of a sector of a circle.
N76 [4]

Answer:-

Central angle , Ф/2π , A = Ф/2 r²

The ratio is 1/3 , V = 1/3 Bh

The equation of the circle in standard form is (x - 4)² + (k - 1)² = 25

Step-by-step explanation:

* Lets revise the rules of the area of the sector of a circle

- The area of the sector which has a central angle Ф° is

  (Ф°/360°) × πr², where 360° is the measure of the circle and r is

  the radius of the circle

- The area of the sector which has a central angle Ф radians is

  (1/2) r²Ф

* Lets complete the missing in the 1st picture

- The ratio of the sector's area A to the circle's area is equal to the

  ratio of the <u>central angle</u> to the measure of a full rotation of the circle

- A full rotation of a circle is 2π. This proportion can written as

 A/πr² = <u>Ф/2π</u>

<em>- </em>Multiply both sides by πr² to get <u>A = Ф/2 r²</u> where Ф is the measure

 of the central angle and r is the radius of the circle

* Lets revise the rules of the volume of the prism and the volume

 of the pyramid, where they have the same base and height

- The volume of the prism = area of the base × its height

- The volume of the pyramid = 1/3 × area of the base × its height

- From them the ratio of the volume of the pyramid to the volume

 of the prism is <u>1/3</u>

- The formula of the volume of the prism is V = Bh, where B is the

  area of the base and h is the height, the formula of the volume

  of the pyramid is <u>V = 1/3 Bh</u>

<u></u>

* Lets revise the standard form of the equation of a circle with

 center (h , k) and radius r

- The equation is: (x - h)² + (y - k)² = r²

∴ x² - 2hx + h² + y² - 2ky + k² - r² = 0

∵ x² - 8x + y² - 2y - 8 = 0

- Lets equate the two equation

∴ x² - 2hx + h² + y² - 2ky + k² - r² = x² - 8x + y² - 2y - 8 = 0

∵ -2h = -8 ⇒ ÷ -2

∴ h = 4

∵ -2k = -2 ⇒ ÷ -2

∴ k = 1

∵ h² + k² - r² = -8

∴ (4)² + (1)² - r² = -8

∴ 16 + 1 - r² = -8

∴ 17 - r² = -8 ⇒ subtract 17 from both sides

∴ -r² = -15 × -1

∴ r² = 25

* Substitute the values of h , k , r in the equation of the standard

 form of the circle

∴ (x - 4)² + (k - 1)² = 25

* The equation of the circle in standard form is <u>(x - 4)² + (k - 1)² = 25</u>

<u></u>

8 0
3 years ago
ANSWER FAST AND CORRECTLY AND I'LL MARK BRAINLIEST!!!!!!!
juin [17]

Answer: Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama Joe Mama

Step-by-step explanation:

3 0
3 years ago
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