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Nady [450]
3 years ago
5

In the figure below, Z is the center of the circle. Suppose that OR=4, ST= 4, UZ= 6, and VZ=4x-6. Find the following.

Mathematics
1 answer:
Ann [662]3 years ago
3 0

Answer:

x = 3 units

SV = 2 units

Step-by-step explanation:

In\odot Z QR and ST are chords such that:

QR = ST = 4

That is both the chords are equal in measure.

Equal chords are at equal distance from the center of the circle. Therefore,

VZ = UZ

4x - 6 = 6

4x = 6 + 6

4x = 12

x = 12/4

x = 3 units

Since, perpendicular dropped from the center of the circle bisects the chord.

\therefore SV = \frac{1}{2} ST

\therefore SV = \frac{1}{2} \times 4

\therefore SV = 2\: units

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Oksanka [162]

Answer:

P=1,000(1.4)^t

Step-by-step explanation:

we know that

The equation of a exponential growth function is equal to

P=a(1+r)^t

where

P is the population

t is the time in years

a is the initial value

r is the rate of change

<u><em>Looking at the table</em></u>

For t=0

The value of P=1,000

so

substitute the value of the ordered pair (0,1,000) in the exponential equation

1,000=a(1+r)^0\\a=1,000

The initial value is a=1,000

substitute

P=1,000(1+r)^t

For t=1

The value of P=1,400

so

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6 0
3 years ago
Help please i need it asap
Reptile [31]

Answer:

∠ZVW= 45

∠ZWV = 31

x=1

Step-by-step explanation:

Properties of a Parallelogram ( including diagonals )

Diagonals of a parallelogram bisect each other.

The diagonals are cut into two equal parts

Opposite angles are congruent

Given this information we need to find x, ∠ZVW and ∠ ZWV

First lets find x

Like stated previously diagonals cut each other into two equal parts

That being said segment WZ ≅ segment ZY

Knowing this we create an equation

2z-1=1

step 1 add 1 to each side

-1 + 1 cancels out

1 + 1 = 2

now we have 2x = 2

step 2 divide each side by 2

2x/2=x

2/2=1

we're left with x = 1

Now lets find ∠ZVW

∠ZVW and ∠ZXY happen to be opposite angles ( opposite angles are congruent )

This means that because ∠ZXY = 45 ∠ZVW also = 45

Now lets find ∠ZWV

∠ZWV and ∠XYZ happen to be opposite angles ( like stated previously, opposite angles are congruent)

So because ∠XYZ = 31 ∠ZWV also = 31

3 0
3 years ago
A pleasure boat sets out for a cruise on a river, sailing upstream 24 miles and then turning around and returning to port. The t
sineoko [7]

Answer:

V(w)  = 26  miles/hour

Step-by-step explanation:

Let  

V(bu)  upstream boat speed         V(w) water speed

Speed upstream

V(bu)  =  24 /144       ⇒   V(b)  =   0,167  miles/min

V(bd)  =  24/40        V(bd)  =  0,6   miles/min

V(bd) =  V(b)  + V(w)

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V(w)  = 0,433 miles/min

or equivalent in miles /hour

V(w)  = 25.98 miles/hour

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4 0
4 years ago
1.33 sin 25.0Á = 1.50 sin _<br> I need this simplified tonight please :(
Drupady [299]
1.33sin(25) = 1.5sin(∅)
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4 years ago
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liq [111]

Answer:

The width is 10 and the length is 14.

Step-by-step explanation:

To draw this conclusion, first use the equation<em> A = lw = 140 .</em>

Remember the length is six less than twice the width, in other words, the length equals 2 time the width minus 6:<em> l = 2w - 6 </em>

Now you want to substitute numbers in:

140 = (2w - 6)(w)

140 = 2w^2 - 6w

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Factorable by inspection!

(w - 10)(w + 7) = 0

w = 10  

<em>w = -7 (nonsense - ignore) </em>

I = 14

6 0
3 years ago
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