3 years ago

What are the solutions of the equation

2 answers:

7 0

X²+4x+4=25
x²+4x+4-25=0
x²+7x-3x-21=0
x(x+7)-3(x+7)=0
(x+7)×(x-3)=0
x+7=0
x-3=0

x=-7
x=3

so your answer is x=-7 x=3

TEA [102]3 years ago

5 0

The solutions will be:
X = -7
And
X = 3

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P(x)equals=R(x)minus−C(x). Given R(x)equals=59 x minus 0.3 x squared59x−0.3x2 and Upper C left parenthesis x right parenthesi

Deffense [45]

Answer:

$P(x)=-0.3x^2+56x-14$

Step-by-step explanation:

The given functions are

$R(x)=59x-0.3x^2$

$C(x)=3x+14$

It is given that

$P(x)=R(x)-C(x)$

Substitute the values of given functions in the above equation.

$P(x)=59x-0.3x^2-(3x+14)$

$P(x)=59x-0.3x^2-3x-14$

Combine like terms.

$P(x)=-0.3x^2+(59x-3x)-14$

$P(x)=-0.3x^2+56x-14$

Therefore, the required function is $P(x)=-0.3x^2+56x-14$ .

4 0

3 years ago

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velikii [3]

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5 0

3 years ago

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a car uses 9.5 L petrol per 100km a) determine the rate in km/L b) how far can the car travel with 47,5L petrol c) how many litr

Lana71 [14]

Step-by-step explanation:

a) determine the rate in km/L

==> 9.5 L/100km = 10.526316 km/L

b) how far can the car travel with 475L petrol

==> 0.210526315789473km/l

c) how many litres of petrol do they need to travel 350 km

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Liters per 100 km (l/100km)0.29

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6 0

2 years ago

A bag has 5 red marbles, 4 blue marbles, 8 green marbles, and 3 yellow

kozerog [31]

Answer:

40% of the total marbles are green.

Step-by-step explanation:

Percentage: Green marbles/Total marbles

=> 8/5 + 4 + 8 + 3
=> 8/20

Percentage formula: $\frac{a}{b} (100)$

=> 8/20 x 100
=> 8 x 5
=> 40

Hence, 40% of the total marbles are green.

Hoped this helped.

$BrainiacUser1357$

7 0

3 years ago

What would I have to do here? Somebody please help me! (Look at the bottom problem not the top)

Zinaida [17]

Alright, let's do this! If $25 is one fifth of how much the game system cost then, multiply 25 times 5. And you should get your answer.
I hope this helps.

8 0

3 years ago