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k0ka [10]
3 years ago
9

HELP! XD

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
4 0
9*4.25=  38.25  square inches.
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How many minutes are there in 12.5 hours?
neonofarm [45]

Answer:

750 minutes

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
OK I need help the answer is c but I didn't understand the teacher explanation pls help me
serg [7]
9 - 6 + 4 - 8/3 ..,
geometric series a(n) = a1r^(n-1)

r = a(n+1)/a(n)
-6/9 = -2/3
4/-6 = -2/3
-8/3/4 = -2/3
so r = -2/3 and a1 = 9

Sn = a1(1-r^n)/(1-r) = 9(1-(-2/3)^n)/(1-(-2/3))
n is infinite Sn = 9/(5/3) = 27/5
7 0
3 years ago
What is the diameter of a hemisphere with a volume of 257 m^3
Alex73 [517]

Answer:

9.9

Step-by-step explanation:

\text{Volume of Hemisphere}\text{:}

Volume of Hemisphere:

\,\,257

257

\text{Volume of Sphere}\text{:}

Volume of Sphere:

\,\,514

514

Double volume of hemisphere to get volume of the entire sphere

\text{Volume of a Sphere:}

Volume of a Sphere:

V=\frac{4}{3}\pi r^3

V=

3

4

​

πr

3

514=

514=

\,\,\left(\frac{4}{3}\pi\right) r^3

(

3

4

​

π)r

3

514=

514=

\,\,(4.1887902)r^3

(4.1887902)r

3

Evaluate 4/3pi in calc

\frac{514}{4.1887902}=

4.1887902

514

​

=

\,\,\frac{(4.1887902)r^3}{4.1887902}

4.1887902

(4.1887902)r

3

​

Evaluate \frac{4}{3}\pi

3

4

​

π in calc

122.7084611=

122.7084611=

\,\,r^3

r

3

\sqrt[3]{122.7084611}=

3

 

122.7084611

​

=

\,\,\sqrt[3]{r^3}

3

 

r

3

​

Cube root both sides

4.9692575=

4.9692575=

\,\,r

r

\text{Then the diameter equals }9.938515

Then the diameter equals 9.938515

diameter is radius times 2

\text{Final Answer:}

Final Answer:

d\approx 9.9\text{ m}

d≈9.9 m

Round to nearest tenth

4 0
3 years ago
Find the greatest common factor of 12 w' and 8w
Anton [14]

Answer:4w

Step-by-step explanation:

To find the greatest common factors of 12w and 8w

Using product of prime factor we get

12w=2×2×3×w

8w=2×2×2×w

Common factors

=2×2×w

=4w

7 0
3 years ago
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50 POINTS STUCK
hram777 [196]

Answer:

C. 62.8 units

Step-by-step explanation:

Use distance formula or Pythagorean theorem.  

Pythagorean-

6^2+8^2= radius^2

100= radius^2

10= radius

radius= r

Use circumference formula.

C=2pir

C=2pi10

C=62.83

7 0
3 years ago
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