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4 years ago

Hello there can you please help me posted picture of question

Mathematics

2 answers:

Stolb23 [73]4 years ago

7 0

5x^2+2x-3=0
We can use the quadratic formula:
ax^2+bx+c=0; a=5, b=2, c=-3
x=[-b+-sqrt(b^2-4ac)]/(2a)
x=[-(2)+-sqrt((2)^2-4(5)(-3))]/[2(5)]
x=[-2+-sqrt(4+60)]/10
x=[-2+-sqrt(64)]/10
x=(-2+-8)/10
Two solutions:
x1=(-2-8)/10→x1=(-10)/10→x1=-1
x2=(-2+8)/10→x2=6/10→x2=3/5

Answer: x=-1 and x=3/5

Answer: Options D. x=-1 and F. x=3/5

AVprozaik [17]4 years ago

5 0

Using quadratic formula;
LET:
a=5, b=2, c=-3

x=[-b+-sqrt(b^2-4ac)]/(2a)x=[-(2)+-sqrt((2)^2-4(5)(-3))]/[2(5)]x=[-2+-sqrt(64)]/10x=(-2+-8)/10
x1=-1x2=3/5

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3 years ago

Tell whether the angles are adjacent or vertical. Then find the value of x.

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Answer:

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Step-by-step explanation:

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3 years ago

If the math club collected 17,604 points and gave away 36 shirts, how many points were collected if 82 shirts were given away?

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3 years ago

A car rental agency has 150 cars. The owner finds that at a price of $48 per day, he can rent all the cars. For each $2 increase

hram777 [196]

Given that for each $2 increase in price, the demand is less and 4 fewer cars are rented.

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Also, given that for each car that is rented, there are routine maintenance costs of $5 per day, then the total cost of renting cars is given by
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Profit is given by revenue - cost.
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3 years ago

If the length of a rectangle is a two-digit number with identical digits and the width is 1/10 the length and the perimeter is 2

Oksanka [162]

If the length of a rectangle is a two-digit number with identical digits and the width is 1/10 the length and the perimeter is 2 times the area of the rectangle, what is the the length and the width

Solution:

Let the length of rectangle=x

Width of rectangle=x/10

Perimeter is 2(Length+Width)

= 2(x+x/10)

Area of Rectangle= Length* Width=x*x/10

As, Perimeter=2(Area)

So,2(x+x/10)=2(x*x/10)

Multiplying the equation with 10, we get,

2(10x+x)=2x²

Adding Like terms, 10x+x=11x

2(11x)=2x^2

22x=2x²

2x²-22x=0

2x(x-11)=0

By Zero Product property, either x=0

or, x-11=0

or, x=11

So, Width=x/10=11/10=1.1

Checking:

So, Perimeter=2(Length +Width)=2(11+1.1)=2*(12.1)=24.2

Area=Length*Width=11*1.1=12.1

Hence, Perimeter= 2 Area

As,24.2=2*12.1=24.2

So, Perimeter=2 Area

So, Answer:Length of Rectangle=11 units

Width of Rectangle=1.1 units

7 0

3 years ago

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