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Lemur [1.5K]
3 years ago
13

3/4x^2+8x+20=0 factor

Mathematics
1 answer:
elena-s [515]3 years ago
6 0

\frac{3}{4}  {x}^{2}  + 8x + 20 = 0
multiplied by 4
3 {x}^{2}  + 32x + 80 = 0 \\ (3x + 20)(x + 4) = 0 \\ so \: x =  -  \frac{20}{3}  \: or \: x =  - 4
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Given the function h(x) = x2 – 7x + 6, determine the average rate of change of
guapka [62]

Step-by-step explanation:

the average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.

so,

(h(7) - (h(3)) / (7 - 3)

h(7) = 7² - 7×7 + 6 = 49 - 49 + 6 = 6

h(3) = 3² - 7×3 + 6 = 9 - 21 + 6 = -6

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the average change rate in that interval is 3 (or fully 3/1).

4 0
3 years ago
The price of a cycle is reduced by 25 per cent. The new price is reduced by a further 20 per cent.Find the single reduction the
Evgen [1.6K]

Answer:

40%  . The single reduction together is 40%.

Step-by-step explanation:

Let the bicycle cost is   x before reduced price.

First 25% is reduced  and again 20% further reduced.

Let the single reduction is y% if the two reduction together are equal.

Solution,

Case .1

reduction cost=x\times 25%%

=x\times 25/100

=x/4

The cost of bicycle after reduction of 25% is

=x-x/4=3x/4

cost of reduction further reduction of 20%      =3x/4\times 20%

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=3x/20

The new cost of bicycle is further reduction of 20% is

=3x/4-3x/20

=\left ( 15x-3x \right )/20

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Case.2

if single reduction is done new cost of cycle is equal

x-x\times y%=3x/5

x\left ( 1-y/100 \right )=3x/5

\left ( 100-y \right )/100=3/5

100-y=60

y=40%

single reduction of a cycle is 40%

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3 years ago
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3 years ago
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Alenkinab [10]

Answer:

C (-6,10) - A)x^7-0.1/4

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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