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Hunter-Best [27]
3 years ago
12

X = ? ? ? ? ? ? ? ? ?

Mathematics
2 answers:
Mashcka [7]3 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

Two secants drawn to a circle from an external point, then

The product of the measures of the external part and the whole of one secant is equal to the product of the external part and the whole of the other secant.

Thus

x × 12 = 4 × 9

12x = 36 ( divide both sides by 12 )

x = 3

natita [175]3 years ago
4 0

Answer:

7

Step-by-step explanation:

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What is the solution to the inequality?<br> <br> 10x + 18 &lt; -2
padilas [110]
Let's solve your inequality step-by-step.

<span><span><span>10x</span>+18</span><<span>−2

</span></span>Step 1: Subtract 18 from both sides.

<span><span><span><span>10x</span>+18</span>−18</span><<span><span>−2</span>−18

</span></span><span><span>10x</span><<span>−20

</span></span>Step 2: Divide both sides by 10.

<span><span><span>10x/</span>10</span><<span><span>−20/</span>10

</span></span><span>x<<span>−2

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<span>x<<span>−<span>2</span></span></span>
4 0
3 years ago
To discourage guessing on the multiple-choice exam a professor assigned 4 points for a correct answer, -4 points for an incorrec
Zanzabum

Answer:

35

Step-by-step explanation:

4 x 15 = 60

-4 x 5 = - 20

-1 x 5 = -5

60 - 20 - 5 = 35

8 0
3 years ago
Read 2 more answers
the population P (t) of a culture of bacteria is given by P (t) =-1710t +92,000t+10,000, where t is the time in hours since the
Akimi4 [234]

The question might have some mistake since there are 2 multiplier of t. I found a similar question as follows:

The population P(t) of a culture of bacteria is given by P(t) = –1710t^2+ 92,000t + 10,000, where t is the time in hours since the culture was started. Determine the time at which the population is at a maximum. Round to the nearest hour.

Answer:

27 hours

Step-by-step explanation:

Equation of population P(t) = –1710t^2+ 92,000t + 10,000

Find the derivative of the function to find the critical value

dP/dt = -2(1710)t + 92000

         = -3420t + 92000

Find the critical value by equating dP/dt = 0

-3420t + 92000 = 0

92000 = 3420t

t = 92000/3420 = 26.90

Check if it really have max value through 2nd derivative

d(dP)/dt^2 = -3420

2nd derivative is negative, hence it has maximum value

So, the time when it is maximum is 26.9 or 27 hours

5 0
3 years ago
Pls help fast I am dumb and I need to go to 2 competitions today!!!
aliina [53]

Answer:0.25

Step-by-step explanation:

Just type it in a calculator

3 0
3 years ago
Read 2 more answers
Can you simpilfy the expression of: 6x-8y-5x+3y<br><br>Answer in comments
Romashka-Z-Leto [24]

Answer:

Hey there. Ur answer is x-5y

Step-by-step explanation:

5 0
2 years ago
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