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jeyben [28]
3 years ago
14

What is BC if AC= 12, DC= 4 and EC=9

Mathematics
1 answer:
nikitadnepr [17]3 years ago
5 0
The complete question in the attached figure

we know that
B<span>ased on the secant theorem
AC*BC=EC*DC
so
BC=[EC*DC]/AC
AC=12
DC=4
EC=9
</span>BC=[9*4]/12------> BC=36/12------> BC=3
<span>
the answer is
BC=3</span>

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50 POINTS! a shirt that normally costs $30 id on sale for $21.75. What percent of the regular price is the sale price
77julia77 [94]

Answer:

72.5%

Step-by-step explanation:

The fraction is $21.75/$30 = 0.725.

To make this a percentage, multiply by 100%:

... 0.725 × 100% = 72.5%

_____

We assume the question is correct as written: "<u>of</u> the regular price." The answer is the complement of this, 27.5%, if the wording is supposed to be "<u>off</u> the regular price."

7 0
3 years ago
What is the value of x?
ser-zykov [4K]

Answer:

14

Step-by-step explanation:

Hypotenuse^2=base^2+perp^2

50^2=base^2+48^2

2500-2304=base^2

Base^2=196

Taking sq root

Base=14

6 0
3 years ago
Let f(x) = - 10x + 9 and g(x) = x2 + 12 <br>Find f( - 4)/g( - 4)​
Reptile [31]

Answer:

\frac{49}{28}

Step-by-step explanation:

Evaluate g(- 4) and f(- 4) by substituting x = - 4 into g(x) and f(x), that is

f(- 4) = - 10(- 4) + 9 = 40 + 9 = 49

g(- 4) = (- 4)² + 12 = 16 + 12 = 28

Then

\frac{f(-4)}{g(-4)} = \frac{49}{28} = \frac{7}{4}

7 0
3 years ago
George and Carmen went on a bicycle trip. They took a bus to their starting point and then biked the rest. They traveled 350 kil
wlad13 [49]
Total distance covered by <span>George and Carmen
</span>x + y = 350
And they biked 80 kilometers more than they bussed
<span>80 + y = x </span>
Putting the value of x=80 + y in <span>x + y = 350:
</span>We get:
<span>80 + y + y = 350 </span>
<span>2y = 270 </span>
<span>y = 135 km</span>

<span>Substituting y = 135 in x + y = 350 </span>
<span>x + 135 = 350</span>
<span>x = 215 km </span>

Thus George and Carmen biked for 215 km and bussed for 135 km.
4 0
3 years ago
What function is the inverse of the exponential function y = (1.5)x?
vagabundo [1.1K]

Correct question is;

What function is the inverse of the exponential function y = 1.5^(x)?

Answer:

y = log_1.5_x

Step-by-step explanation:

The inverse of exponential functions is usually written in form of logarithm.

For example inverse of y = p^(x) will be written as; y = log_p_(x)

Similarly applying this same pattern to our exponential function y = 1.5^(x), we have the inverse as;

y = log_1.5_x

6 0
2 years ago
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