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Vikentia [17]
3 years ago
13

) Evaluate the expression 6n² – 15 when n=5 6n to the second power minus 15 = 6 ( blank) to second power minus 15

Mathematics
2 answers:
Anton [14]3 years ago
6 0
I got n=5,-5 I’m hoping this helps.
This is a calculator(in the photo)

irga5000 [103]3 years ago
5 0
I think um um...kanshjeksjansvs 5x = 25
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8 0
4 years ago
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Basile [38]

Answer:

x = 9

Step-by-step explanation:

The big triangle is similar to smaller one so we can use the side lengths' proportion to find x:

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4 0
3 years ago
)) How many solutions does this equation have?<br> 12 + 4t - 14t = -13t - 18
Orlov [11]

Answer:

t = -10

Step-by-step explanation:

Ok so,

12 - 10t = -13t -18

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12 - 12 + 3t = -18 - 12

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t = -10

hope this helps! have a good day!

7 0
3 years ago
How long will it take for a $2000 investment to grow to $3178 at an annual rate of 8.6%, compounded semiannually? Assume that no
masha68 [24]

Answer:

n = 1

Step-by-step explanation:

Due to it being compounded semiannually, the total amount after n years should be 2000[1+(.086/2)]^2n = 3178.    (A = p(1+r/n)^nt)

Hence, solving this equation:

(1+0.43)^2n = 3178/2000

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7 0
3 years ago
Gary drank
Scrat [10]

Answer:

1 7/15

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4/5 = 12/15

2/3 = 10/15

12/15 + 10/15 = 22/15 or 1 7/15

6 0
3 years ago
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