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zhenek [66]
3 years ago
7

Find the value for b. 3x^2– X – 10 = 0 Entor the correct answer

Mathematics
2 answers:
ser-zykov [4K]3 years ago
5 0

Answer:

X=2, X= -5/3

Step-by-step explanation:

let's solve your equation step-by-step

3x^2-x-10=0

step 1: factor left side of equation.

(3x+5)(x-2)=0

step 2: set factors equal to 0.

3x+5=0  or x-2=0

x= -5/3 or x=2

Veseljchak [2.6K]3 years ago
4 0

b=-1

.............................

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Apply the appropriate mathematical operation to solve this fulcrum problem.
ale4655 [162]
<h2>Hello!</h2>

The answer is:

The second distance (distance_{2}) is equal to 7.5 feet.

<h2>Why?</h2>

Since we are given two forces acting at distance, torque will be created. We are given two forces and one distance, so, to calculate the other distance required to balance the system (solve this fulcrum problem), we need to write the following equation:

Torque_{1}=Torque_{2}

Where,

Torque=F*Distance

We are given,

Force_{1}=Weight_{1}=150lb\\Force_{2}=Weight_{2}=30lb\\distance_{1}=15ft\\

So, substituting and calculating, we have:

Torque_{1}=Torque_{2}

Weight_{1}*distance_{1}=Weight_{2}*distance_{2}

150lb*15ft=300lb*distance_{2}

distance_{2}=\frac{150lb*15ft}{300lb}=7.5ft

Hence, the second distance (distance_{2}) is equal to 7.5 feet.

It's a logical solution since the second force is twice the first force and it means that the second distance must be equal to half the first distance in order to maintain the equilibrium condition.

Have a nice day!

8 0
3 years ago
Please help with the tennis court one.
solniwko [45]
We have two sides of length 'w'. They are the vertical sides.

We also have two sides of length '2w+6' which are the horizontal sides.

So we have these four sides
side1 = w
side2 = 2w+6
side3 = w
side4 = 2w+6

Let's add up those four sides to get
Perimeter = (side1)+(side2)+(side3)+(side4)
Perimeter = (w)+(2w+6)+(w)+(2w+6)
Perimeter = w+2w+6+w+2w+6
Perimeter = 6w+12

------------------------

Since the perimeter is given to be 228, and we found the perimeter expression to be 6w+12, this must mean that the two are equal

So, 6w+12 = 228

Let's solve for w

6w+12 = 228
6w+12-12 = 228-12
6w = 216
6w/6 = 216/6
w = 36

------------------------

Now that we know that w = 36, we can find the dimensions of this rectangle

The vertical sides are simply w, so the vertical sides are 36 feet each. I simply replaced w with 36.

The horizontal sides are a bit more complicated. The expression we have is 2w+6 or 2*w+6. Let's replace w with 36 and use PEMDAS to evaluate

2*w+6 = 2*36+6 = 78

------------------------------------------
------------------------------------------

Answers are...
Length = 78 feet
Width = 36 feet
(the length is the horizontal component, the width is the vertical)
5 0
4 years ago
Write x^3-11x^2 in standard form
Vika [28.1K]

Answer:

The answer is x^3 - 11x^2

Step-by-step explanation:

Write in standard form.

Hoped this helped!

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Answer:

b is the correct answer

Step-by-step explanation:

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