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2 years ago

What is the answer to 18.9=2.1x

Mathematics

1 answer:

Contact [7]2 years ago

8 0

9 to find the answer divide 2.1 by 18.9 in which you'll get 9 = x

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Round to the nearest thousand.Find the estimated answer 9526 -5329=

BaLLatris [955]

Answer:

4000

Step-by-step explanation:

9526-5326=4197

When rounded off gives 4000

8 0

2 years ago

Evaluate 8 - 4.7y - x when y= -1 and x= 2.

Marat540 [252]

Substitute in the values for y and x into the equation.

so..

8 - 4.7(-1) - (2) solve the equation
8 + 4.7 -2
12.7 - 2
10.7

4 0

3 years ago

Read 2 more answers

Need help on 41-44 please

Anika [276]

44-41=3 hope it help think so

4 0

3 years ago

Write and evaluate the definite integral that represents the volume of the solid formed by revolving the region about the x-axis

guapka [62]

Answer: V = $\frac{64}{3}\pi$

Step-by-step explanation: A solid formed by revolving the region about the x-axis can be considered to have a thin vertical strip with thickness Δx and height y = f(x). The strip creates a circular disk with volume:

V = $\pi. y^{2}.$ Δx

Using the Disc Method, it is possible to calculate all the volume of these strips, giving the volume of the revolved solid:

V = $\int\limits^a_b {\pi. y^{2} } \, dx$

Then, for the region generated by y = - x + 4:

V = $\int\limits^4_0 {\pi.(-x+4)^{2} } \, dx$

V = $\pi.\int\limits^4_0 {(x^{2}-8x+16)} \, dx$

V = $\pi.(\frac{x^{3}}{3}-4x^{2}+16x )$

V = $\pi.(\frac{4^{3}}{3}-4.4^{2}+16.4 - 0 )$

V = $\frac{64}{3}.\pi$

The volume of the revolved region is V = $\frac{64}{3}.\pi$

8 0

2 years ago

Help please!!!

Tanya [424]

Sin C = AB / AC
We have AC. We need to calculate AB

ABC is a right triangle. Therefore, AC² = AB²+BC²
82² = AB ² + 80² => AB² = 82² - 80²
AB = 18

Sin C = 18/82 = 9/41

Good luck

4 0

2 years ago

Read 2 more answers