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Elza [17]
3 years ago
12

Multiply by 3, then subtract 4.

Mathematics
1 answer:
Otrada [13]3 years ago
4 0

Answer:

what number do you want to "Multiply by 3, then subtract 4."

Example:

(12 x 3) - 4

36 - 4 = 32

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Can someone help me with this?​
Anna35 [415]

Answer:

Let 'a' be the first term, 'r' be the common ratio and 'n' be the number of terms

Series = 2+6+18.......= 2+2•3¹+ 2•3².......= 728

Now,

Sum =  \frac{a( {r}^{n} - 1) }{(r - 1)}   \\

So,

\frac{a( {r}^{n} - 1)}{(r - 1)}  = 728 \\  \frac{2( {3}^{n} - 1) }{(3 - 1)}  = 728 \\  \frac{2( {3}^{n} - 1) }{2}  = 728 \\  {3}^{n}  - 1 = 728 \\ {3}^{n}=728+1\\ {3}^{n}  = 729 \\  {3}^{n}  =  {3}^{6}  \\ \boxed{ n = 6}

Therefore, number of terms is 6

  • 6 is the right answer.
3 0
2 years ago
Plzz help this is due today
notka56 [123]
1.C 2. No 3.A hope this help
7 0
3 years ago
Greg plays baseball at a field where the baseball diamond is a square with each side of the square measuring 90 feet. If the bas
tiny-mole [99]

Answer:

The diagonal of a square with 90 ft. per side is 127.28 which should be rounded down to 127 and the throw from 2nd to 3rd is 90 ft totaling 217 ft

5 0
2 years ago
A ramp 17 1/2 feet in length rises to a loading platform that is 3 1/2 feet off the ground. Find the angle that the ramp makes w
faltersainse [42]

Answer:

The angle that the ramp makes with the ground is 11.54°

Step-by-step explanation:

From the image attached, we can see that the length of 17 1/2 ft corresponds to the hypotenuse in a right triangle, the length of 3 1/2 ft corresponds to the opposite side.

We can use the fact that the sin(θ) = \frac{Opposite}{Hypotenuse} to find the angle that the ramp makes with the ground.

sin(\theta)=\frac{3.5}{17.5}

The angle is equal to

\theta = sin^{-1}(\frac{3.5}{17.5} )\\\theta = 11.54\°

3 0
3 years ago
What is the hypotenuse of a right triangle that has legs measuring 6 cm and 8 cm?
ankoles [38]
C=10cm

Have a great day, I hope this helps.

8 0
3 years ago
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