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3 years ago

Which value of x would make FG II BC? 1 3 6 9

Mathematics

2 answers:

Veseljchak [2.6K]3 years ago

7 0

x - 1 x + 1
------ = --------------
x + 3 x + 6

if x = 9
8/ 12 = 10/15

12 (10) = 8(15)
120 = 120

so
answer is 9 (last choice)

ehidna [41]3 years ago

6 0

Answer: The value of x is 9.

Explanation:

It is given that FG || BC.

If a transversal line intersect two parallel lines then the corresponding angles are same. There in triangle ACB and AGF,

$\angle GFA=\angle CBA$

$\angle AGF=\angle ACB$

Angle A is common is both triangles.

$\frac{FA}{BA}= \frac{GA}{CA}$

$\frac{x+1}{(x+1)+(x+6)}= \frac{x-1}{(x-1)+(x+3)}$

$\frac{x+1}{(2x+7}= \frac{x-1}{(2x+2)}$

$(x+1)(2x+2)=(x-1)(2x+7)$

$2x^2+4x+2=2x^2+5x-7$

$4x+2=5x-7$

$x=9$

Therefore, the value of x is 9.

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Fantom [35]

Answer:

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Step-by-step explanation:

Original Equation;

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There are two negative number so you add them and when you add them it would still be negative. And you would have to add them because when there are two negative numbers without any other sign you will have to add so it's going to be;

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This is the final answer!!!

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Hello!

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3 years ago

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JulsSmile [24]

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D - It is impossible to make a judgment with the given information.

Step-by-step explanation:

The fact that 1200 births were randomly selected and only 599 of such picks are girls does not give enough information on whether the birth is significantly high, low or neither. We must have other information to test for significance of the births proportion.

All we know is that;

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3 years ago

I am very stuck with this

Bingel [31]

Answer:

see explanation

Step-by-step explanation:

To multiply the vector by a scalar, multiply each of the elements by the scalar.

To add 3 vectors add the corresponding elements of each vector

2a + 3b + 4c

= 2 $\left[\begin{array}{ccc}2\\3\\\end{array}\right]$ + 3 $\left[\begin{array}{ccc}-4\\1\\\end{array}\right]$ + 4 $\left[\begin{array}{ccc}3\\2\\\end{array}\right]$

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3 years ago