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3 years ago

I would like to know what is the value of z

Mathematics

1 answer:

Brrunno [24]3 years ago

3 0

From the chord theorem we know that:

$\overline{TW}\cdot\overline{UW}=\overline{CW}\cdot\overline{VW}$

so:

$\overline{TW}\cdot\overline{UW}=\overline{CW}\cdot\overline{VW}\\\\3\cdot\overline{UW}=x\cdot6\\\\3\cdot(\overline{TU}-\overline{TW})=x\cdot6\\\\
3\cdot(x+7-3)=x\cdot6\\\\3\cdot(x+4)=x\cdot6\\\\3x+12=6x\\\\12=6x-3x\\\\3x=12\qquad|\div3\\\\\boxed{x=4}$

Answer C.

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The size of Texas is approximately 270000 square miles this ever represented approximately 41% of the size of Alaska approximate

Tanzania [10]

Let's set up the problem. First, we know Texas is 270,000 square miles, and this is 41% the size of Alaska.
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3 years ago

Which equation does the graph of the systems of equations solve? It's a quadratic graph opening down and quadratic graph opening

vodka [1.7K]

Answer:

D. $-x^{2} -2x+3=2x^{2} -8x+3$

Step-by-step explanation:

We are given that,

The graph of the system of equations is a 'quadratic graph opening down and a quadratic graph opening up'.

This means that one quadratic equation will have leading co-efficient positive and other will have leading co-efficient negative.

So, we get that options A and B are discarded.

Further it is provided that the graph intersect at ( 0,3 ) and ( 2,-5 ).

This means that the pair of points must satisfy the given system of equations.

So, according to the options:

C. $-x^{2} -2x+3=2x^{2} -8x-3$

Putting x = 0, gives 3 = -3, which is not possible.

So, option C is dicarded.

D. $-x^{2} -2x+3=2x^{2} -8x+3$

Putting x = 0 gives 3 = 3 and x = 2 gives -5 = -5.

Hence, the graph of the given system solves the equation $-x^{2} -2x+3=2x^{2} -8x+3$ .

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3 years ago

Which expression has the greater value? Justify your answer. −8 + 3 −8 × 3

barxatty [35]

Did u mean -8+3= and -8x3= cuz if so then it’s -8+3=-5 and -8x3=-24 so it would be -8+3

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3 years ago

Five dozen cds were bought for $90 a peddlar sold them at 5 for $12 calculate his profit.

valina [46]

If 12 dozen were bought for $90 that means each CD was bought at the price of $0.66

If he sold all 60 of the CD's for 5 for $12, he'd make $144.

Subtract the income by the original buying price to find his profit. $144 - $90

The peddler made $54 profit.

5 0

3 years ago

Read 2 more answers

Is 11/50 and 0.22 equivalent?

ozzi

11/50=1.1/5=0.22

They are indeed equivalent.

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3 years ago