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2 years ago

Evaluate the function. f(x) = -4x2 + 5x Find f(6)

Mathematics

2 answers:

erastovalidia [21]2 years ago

7 0

Answer:

f(6) = -114

Step-by-step explanation:

f(x) = -4x² + 5x

f(6) = -4(6)² + 5(6)

f(6) = -4(36) + 30

f(6) = -114 + 30

f(6) = -114

frez [133]2 years ago

6 0

Answer:

-114

Step-by-step explanation:

to evaluate the function f(x) to find f(6) means to substitute x by 6

f(x) = -4x² +5x

f(6) = -4*6² +5*6

f(6) = -144 + 30

f(6) = -114

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Convert Fraction to Decimal.

kipiarov [429]

Answer:

39/50

Step-by-step explanation:

Rewrite the decimal number as a fraction with 1 in the denominator

0.78=0.781

Multiply to remove 2 decimal places. Here, you multiply top and bottom by 102 = 100

0.781×100100=78100

Find the Greatest Common Factor (GCF) of 78 and 100, if it exists, and reduce the fraction by dividing both numerator and denominator by GCF = 2,

78÷2100÷2=3950

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In conclusion,

0.78=3950

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bulgar [2K]

Step-by-step explanation:

2+6x= -10 + 11(x + 4)

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Find the sumofthe geometrical progression of five terms, of which the first term is 7 and the multiplier is 7.Verify that the su

777dan777 [17]

Answer:

The sum of first five term of GP is 19607.

Step-by-step explanation:

We are given the following in the question:

A geometric progression with 7 as the first term and 7 as the common ration.

$a, ar, ar^2,...\\a = 7\\r = 7$

$7, 7^2, 7^3, 7^4...$

Sum of n terms in a geometric progression:

$S_n = \displaystyle\frac{a(r^n - 1)}{(r-1)}$

For sum of five terms, we put n= 5, a = 7, r = 7

$S_5 = \displaystyle\frac{7(7^5 - 1)}{(7-1)}\\\\S_5 = 19607$

The sum of first five term of GP is 19607.

Verification:

$2801\times 7 = 19607$

Thus, the sum is equal to product of 2801 and 7.

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3 years ago