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astra-53 [7]
2 years ago
6

Find the volume of the sphere. Round your answer to the nearest tenth.

Mathematics
1 answer:
scoundrel [369]2 years ago
7 0

Answer:

20

Step-by-step explanation:

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What is the value of the expression 4 × (2a − 1) if a = 3?
dlinn [17]

Answer:

20

Step-by-step explanation:

4 * (2a − 1)

Let a=3

4 * (2*3 − 1)

Simplify inside the parentheses first

4 * (6 − 1)

4 * (5)

20

4 0
3 years ago
Lucy drove 200 miles using 9 gallons of gas. At this rate, how many gallons of gas would she need to drive 420 miles
Aneli [31]

Answer:

18.9

Step-by-step explanation:

if 200miles = 9gallons

then 420miles = ?

note:if more less divide and if less more divide.

so it is 420/200×9=18.9

8 0
3 years ago
Isabel put $4,000 into a saving account that pays interest monthly at a simple-interest rate of 2.5% per year. If she takes the
never [62]

9514 1404 393

Answer:

  $49.98

Step-by-step explanation:

The interest credited to Isabel's account each month is ...

  I = Prt

  I = $4000·(0.025)(1/12) = $8.33

If she withdraws that amount each month, the original balance is restored, and she will earn the same amount the next month.

Isabel's total earnings in 6 months will be ...

  $8.33 · 6 = $49.98

4 0
3 years ago
3. + (-2) + (-24 )
OleMash [197]

Answer:

\huge{ \boxed{ \bold{ \sf{ - 26}}}}

<h3>☄ Question : Simplify</h3>
  • \sf{ + ( - 2) + ( - 24)}
<h3>☄ Step - by - step explanation : </h3>
  • \sf{ + ( - 2) + ( - 24)}

Remember : \sf{( + ) \times ( - ) = ( - )}

\dashrightarrow{ \sf{ - 2 - 24}}

Remember : The negative integers are always added but posses the negative ( - ) sign.

\dashrightarrow{ \boxed{ \sf{ - 26}}}

--------------------------------------------------------------

<h3>† Remember :</h3>

✒ Sign rules of addition and subtraction of integers :

  • The positive integers are always added but posses the positive ( + ) sign.
  • The negative integers are always added but posses the negative ( - ) sign.
  • The negative and positive integers are always subtracted but posses the sign of the bigger integer.

✒ Sign rules of multiplication and division :

  • \sf{( + ) \times ( + ) = ( + )}
  • \sf{( + ) \times ( - ) = ( - )}
  • \sf{(  -  ) \times ( + ) = ( - ) }
  • \sf{( - )  \times ( - ) = ( + ) }

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Hope I helped!

Have a wonderful time ! ツ

4 0
3 years ago
How do I solve: x &gt; 0 &lt; y + z?
Tresset [83]
I'm tempted to separate this inequality into two parts:

x > 0 and 0 < y + z.

x > 0 includes all of the 3-dimensional solid to the right of the plane x = 0.

If 0 < y + z, then  -y < z, or z > -y.  z = -y is the equation of a plane that is good for all x (x doesn't matter here).  Draw the plane (thru the origin) that satisfies z = -y.  Then 0 < y + z denotes the portion of the 3-d solid BELOW the plane z = -y.

Best to draw this in 3-d and to shade the portions of the solid centered at (0, 0, 0) that satisfy both x > 0 and 0 < y + z.
6 0
3 years ago
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