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3 years ago

Which equation shows the value of -2/5 - -9/15

Mathematics

1 answer:

Alika [10]3 years ago

6 0

Answer:

D) 3/15

Step-by-step explanation:

(-2/5) - (-9/15) = (-6/15) - (-9/15) = (-6/15) + (9/15) = 3/15

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How do you find vertical, horizontal and oblique asymptotes for f(x) = (5x-15 )/ (2x 14)?

Andrei [34K]

For vertical asymptotes, find the values which make the function indetermine in this case x=-7,so this is the only vertical asymptote.
For horizontal asymptotes, find the limit when x tends to infinity:
=(5x/x-15/x)/(2x/x+14/x) = 5/2, this is the horizontal asymptote y=5/2
For obliques, you have to meet the degree of the numerator is exactly a greater degree than the denominator, in this case they are the same degree so no oblique asymptote.

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3 years ago

The _____ in scientific notation tells you how many places to move the decimal point.

victus00 [196]

The exponent tells you how many places to move.

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3 years ago

35 points What is an approximate average rate of change of the graph from x = 8 to x = 13

Ghella [55]

Rate of change is -2 because you can do rise over run to find the constant rate of change, and since you are going down you have a negative slope.

4 0

3 years ago

Helpppppppppppppppppp

Brilliant_brown [7]

Answer:

Option A; the tournament did begin with 128 teams

Step-by-step explanation:

We can see that this equation is represented by compound interest, in other words an exponential function, either being exponential growth or exponential decay;

f ( x ) = a + ( b )^x, where a ⇒ start value, b ⇒ constant, x ⇒ ( almost always considered ) time, but in this case rounds

Option A; The equation is given to be t ( x ) = 128 * ( 1/2 )^x. Given by the above, 128 should represent the start value, hinting that the tournament did indeed begin with 128 teams

Option B; As the rounds increase the number of teams approach 128. Now mind you 128 is the start value, not the end value, which would mean that this statement is false

Option C; The tournament began with 1/2 teams. Theoretically that would not be possible, but besides that the tournament began with 128 teams, only differed by 1/2 times as much every round. This statement is thus false

Option D; This situation actually represents exponential decay. If each round the number of teams differed by 1/2 times as much, the number of teams remaining is less than before, and thus this models exponential decay, not growth ( statement is false )

Answer : Option A; the tournament did begin with 128 teams

4 0

3 years ago

Frank deposits 5350.00 in a savings account. The account pays an annual Interest rate of 1%. Ile makes no other deposits or with

9966 [12]

Answer:

If the account paid a monthly interest instead of annual, the answer would be $162.12

Step-by-step explanation:

<h3>PS: THIS ISN'T THE ANSWER TO THIS QUESTION BECAUSE IT STATED 'ANNUAL INTEREST' BUT I USED MONTHLY INTEREST INSTEAD. HOPE THIS HELPS SOMEONE ELSE THOUGH.</h3><h3>FIRST MONTH</h3>

Original value is $5350.00

Percentage increase(interest gained) is 1%

Total value after 1st month is equal to the Original Value + The interest

$5350.00 x 0.01 (0.01 = 1/100 = 1%) = $53.50

Do not try and do this altogether as you will get the answer wrong. Instead calculate month by month.

At the end of the first month, he has ($5350.00 + $53.50) = $5403.50

<h3>SECOND MONTH</h3>

Original Value is $5403.50

Percentage increase(interest gained) is still 1%

Total value after the 2nd month is equal to the Original Value+The interest

$5403.50 x 0.01 = $54.035

ALWAYS round off to the nearest cent before continuing.

At the end of the second month, he has ($5403.50 + $54.04) = $5457.54

<h3>THIRD MONTH</h3>

Original Value is $5457.54

Percentage increase(interest gained) is 1%

Total value after the 3rd month is equal to the Original Value + The interest

$5457.54 x 0.01 = $54.5754 = $54.58

When rounding off, if the number is 5 or higher, add 1 to the digit before it.

At the end of the third month, he has ($5457.54 + $54.58) = $5512.12

The question asks, how much interest did his money earn. If you calculated like how I did above, picking the interest should be easy.

Simply add, the first month's interest, to the second month's interest, to the third month's interest.

$53.50 + $54.04 + $54.58 = $162.12

6 0

3 years ago