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Diano4ka-milaya [45]
3 years ago
10

What is 2 2/15 - 1 2/3= I ended up with 2 3/21 Really need help with this!

Mathematics
1 answer:
QveST [7]3 years ago
5 0

Answer:

2 \frac{2}{15}  - 1 \frac{2}{3}

=  \frac{32}{15}  -  \frac{5}{3}

=  \frac{32 \times 1 - 5 \times 5}{15}

= \frac{32 - 25}{15}

=  \frac{7}{15}

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Find the sum of the geometric series given a1=2, r=−3, and n=8.
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Answer:

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Step-by-step explanation:

Summation:

{ \bf{sum =  \frac{a( {r}^{n }-1 )}{r - 1} }} \\  \\ { \tt{sum =  \frac{2( { { - 3}^{8 } -1)} }{ - 3 - 1} }} \\ { \tt{ =  \frac{13120}{-4} }} \\  = -3280

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3 years ago
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86 m

Step-by-step explanation:

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How many solutions does this equation have?
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5 0
3 years ago
What is the Volume of the square pyramid? (Round to the nearest tenth as needed)
goldenfox [79]

Answer:

5229 mm³

Step-by-step explanation:

Volume of square pyramid

\sf \boxed{Volume \ of \ the \ square \ pyramid = \dfrac{1}{3}*b^2*H}

      b = base length = 25 mm

       H = height

         We have to find 'H' using Pythagorean theorem,

              slant height (hypotenuse) = 28 mm

                                                  leg₁ = base length  ÷ 2 = 25÷2 = 12.5

                                                  leg₂ = H

     H² + (12.5)² = 28²

                  H²   = 784 - 156.25

                         = 627.75

                   \sf H = \sqrt{627.75}

                 H = 25.01 mm

          \sf  \text{Volume of square pyramid =$\dfrac{1}{3}*25*25*25.1$ }

                                                     = 5229 mm³

                                                     

       

\sf \boxed{\text{Volume of square pyramid = \dfrac{1}{3}*25*25*28}}

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2 years ago
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