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3 years ago

What is x -2(4x-3)=-12-14x

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

4 0

Answer:

x= -17/8

Step-by-step explanation:

1 step: take care of the parentheses ( multiply -2 to what is on parentheses)

so x -8x +6 =-12-14x

2 step : move all number with x to the left side

x-8x +14x = -12 -6

7x = -18

x = -18/7

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3 years ago

Harlene tosses two number cubes. If a sum of 8 or 12 comes up, she gets 9 points. If not, she loses 2 points. What is the expect

Amanda [17]

P(8 or 12) = 1/6
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3 years ago

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How do I solve this?Farmer Ed has 1500 meters of fencing, and wants to enclose a rectangular plot that borders on a river. If fa

Dafna1 [17]

We need to find the maximum (Vertex of the function)

Let:

L = Length = 1500 - 2x

W = Width = x

The area is given by:

$\begin{gathered} A=W\cdot L \\ A=x(1500-2x) \\ A=1500x-2x^2 \\ A(x)=1500x-2x^2 \end{gathered}$

We can find the maximum using the following formula:

$\begin{gathered} xm=-\frac{b}{2a} \\ where \\ a=-2 \\ b=1500 \\ so\colon \\ xm=-\frac{(1500)}{2(-2)}=\frac{1500}{4}=375 \end{gathered}$

Evaluate the area for the value we found previously:

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1 year ago

Find the area of the parallelogram

slava [35]

Answer:

A = 864 cm

Step-by-step explanation:

Since the parallelogram looks like a trapezoid, I'm going to use that area formula.

The area of a trapezoid can be found with A = (a + b) h/2. So, substitute in the given values. A = (9 x 24) 8/2. A = 216 x 8/2. A = 864.

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3 years ago

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wariber [46]

Step-by-step explanation:

the small and the large triangles are similar triangles.

they have the same angles. and the corresponding sides correlate to each other with the same ratio for every pair of sides.

so,

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= (2x + 8) / (7x + 4)

(7x + 4)×28 = (2x + 8)×82

196x + 112 = 164x + 656

32x = 544

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3 years ago