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3 years ago

Find the value of x. A. 11 B. 10 C. 9 D. 14

Mathematics

1 answer:

velikii [3]3 years ago

8 0

Use proportionalitie of sides so because this line with length 2x-8 is a midle segment line what mean that

2x-8 1
------- = --- => 2x -8 = 10 so 2x = 18 so x = 18/2 so x = 9
20 2

and so choice C. is right sure

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Camilias as backyard is in the shape of a rectangle and has a length of 16.5 feet. It costs her $976 to fence in the yard. If fe

Bumek [7]

Answer:

14 feet

Step-by-step explanation:

To calculate the width of the patio, we will use the formula of the perimeter, in the case of the rectangle it has the formula of:

p = 2 * l + 2 * w

Now we know that the total fencing value is $ 976 and that per foot is $ 16

that is, we can calculate the value of the perimeter, like this:

976/16 = 61

We know that the perimeter is 61 feet and that the length is 16.5, therefore it only remains to replace:

61 = 16.5 * 2 + 2 * w

solving for w:

w = (61 - 33) / 2

w = 14

which means that the width of the patio is 14 feet.

8 0

2 years ago

The lines 6y+2=12x+4 and 4y+12=2x-8 are: a) parallel.

KatRina [158]

d) neither parallel or perpendicular

3 0

2 years ago

Five times your quiz score q

N76 [4]

the answer would be 5 x q

5 0

3 years ago

Prove that the value of the expression does not depend on the variable x:

Leviafan [203]

Answer:

See below

Step-by-step explanation:

If an expression is not dependent on x, it simplified form must not contain x. To show that this is the case for (a) and (b) we need to simplify them and assess:

(a)

$(x-5)(x+8)-(x+4)(x-1)=\\=x^2-5x+8x-40-x^2-4x+x+4=-36$

Indeed, does not depend on x!

And (b)

$x^4-(x^2-1)(x^2+1)=x^4-x^4+x^2-x^2+1=1$

Again, does not depend on x.

8 0

2 years ago

Which graph is the correct one?

cestrela7 [59]

Answer:

The upper graph

Step-by-step explanation:

We have two quadratic function here

$y=-x^{2} +3x+5\\y=x^{2} +2x\\$

If we perform the function f(x) + g(x), which is nothing more than the sum of the two functions, we obtain a linear function, since the quadratic terms are eliminated by themselves

$5x+5$

3 0

2 years ago