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WINSTONCH [101]
3 years ago
12

Help me with my math **50 pts** I mark brainliest**

Mathematics
1 answer:
s2008m [1.1K]3 years ago
8 0

Answer:

2)

2x + 6x + 8 = 32

collect like terms

8x + 8 = 32

move the constant to the right hand side and change its sign.

8x = 32 - 8

Subtract the numbers

8x = 24

Divide both sides of the equation by 8

x = 3

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Let V be the volume of the solid obtained by rotating about the y-axis the region bounded y = 25x and y = x2 25 . Find V by slic
vesna_86 [32]

Answer:

volume\ = \pi \frac{625^2}{6}

Step-by-step explanation:

See the attached figure.

y₁ = 25x  and  y₂ =x²

The intersection between y₁ and y₂

25x = x²

x² - 25x = 0

x(x-25) = 0

x = 0 or x =25

y = 0 or y =25² = 625

The points of intersection (0,0) and (25,625)

To find the volume of the solid obtained by rotating about the y-axis the region bounded by y₁ and y₂

y₁ = 25x ⇒ x₁ = y/25 ⇒ x₁² = y²/625

y₂ =x² ⇒ x₂ = √y ⇒ x₂² = y

v = ∫A(y) dy = π ∫ (x₂² - x₁²) dy

∴ V =

\pi \int\limits^{625}_0 {y-\frac{y^2}{625} } \, dy  =\pi( \frac{y^2}{2} -\frac{y^3}{3*625} ) =\pi (\frac{625^2}{2} -\frac{625^3}{3*625}) =\pi ( \frac{625^2}{2}-\frac{625^2}{3}) =\pi \frac{625^2}{6}

8 0
3 years ago
Solve for X<br> A. 2.25<br> B. 19<br> C. 12<br> D. 22
Vilka [71]

Answer:

19

Step-by-step explanation:

Tangent Chord Angle = 1/2 Intercepted Arc

67 = 1/2 ( 4x+58)

Distribute

67 = 2x+29

Subtract 29 from each side

67-29 = 2x+29-29

38 = 2x

Divide by 2

38/2 = 2x/2

19 =x

4 0
2 years ago
Can anyone help? please
san4es73 [151]

Answer:

Step-by-step explanation:

72

6 0
2 years ago
Heidi is driving 200 miles. She has finished 80% of the drive. How many miles is 80% of Heidi's drive.
algol [13]

Answer:

160 miles

Step-by-step explanation:

200 * 0.8 is 160

3 0
3 years ago
Read 2 more answers
Please answer the problem and show your work.Thank you.
Vinvika [58]

Answer:

8. m=6

9.  x=2; Alyssa is incorrect because she subtracted 8 from 16 when in reality she should have divided 16 by 8 to get 2. The real solution is 2 because 8 times 2 is equal to 16.

Step-by-step explanation:

Question 8:

2m-6=m

-2m    -2m     (subtract 2m from both sides)

<u>-6</u>=<u>-m</u>  

-       -     (divide both sides by the negative)

m=6

Question 9:

<u>8x</u>=<u>16  </u>              (divide both sides of the equation by 8)

8     8

x=2

8 0
1 year ago
Read 2 more answers
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