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Vsevolod [243]
2 years ago
13

5 1 6X-58 х = 19 х = 19 30

Mathematics
1 answer:
Ulleksa [173]2 years ago
6 0

Answer:

nope i dont understand

Step-by-step explanation:

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The size of an insect population doubles every week. If there are 25 insects initially present, how many insects will there be i
Nata [24]

Answer:

tence there will be 6,00 insects abter 8 weeks.

Step-by-step explanation:

8 0
2 years ago
The altitude of a triangle is increasing at a rate of 1 cm/min while the area of the triangle is increasing at a rate of 2 cm^2/
VARVARA [1.3K]

Answer:

The base is decreasing at 2 cm/min.

Step-by-step explanation:

The area (A) of a triangle is given by:

A = \frac{1}{2}bh   (1)

Where:

b: is the base

h: is the altitude = 10 cm

If we take the derivative of equation (1) as a function of time we have:

\frac{dA}{dt} = \frac{1}{2}(\frac{db}{dt}h + \frac{dh}{dt}b)

We can find the base by solving equation (1) for b:

b = \frac{2A}{h} = \frac{2*120 cm^{2}}{10 cm} = 24 cm

Now, having that dh/dt = 1 cm/min, dA/dt = 2 cm²/min we can find db/dt:

2 cm^{2}/min = \frac{1}{2}(\frac{db}{dt}*10 cm + 1 cm/min*24 cm)

\frac{db}{dt} = \frac{2*2 cm^{2}/min - 1 cm/min*24 cm}{10 cm} = -2 cm/min    

         

Therefore, the base is decreasing at 2 cm/min.

               

I hope it helps you!  

7 0
2 years ago
At the craft store, Mark bought a bag of blue and brown marbles. The bag contained 20 marbles, and 30% of them were blue. How ma
kykrilka [37]

Answer:

6 blue marbles

Step-by-step explanation:

20 marbles * .30 are blue = blue marbles

20 * .30 = 6 blue marbles

5 0
3 years ago
You roll 2 six-sided dice. What is the probability of rolling a sum that is less
lubasha [3.4K]
The probability is 3/6 or 0.5 or 1/2.
8 0
2 years ago
What is the answer for this 8k−5(−5k+3)
Helen [10]

Answer:

33k-15

Step-by-step explanation:

8k−5(−5k+3)

8k+25k-15 because -5(-5) equals=25. Two negatives equal a positive.

-5(3)= -15

So the equation changes to 8k+25k-15.

Combine like terms, and you get:

33k-15

Hope this helps, have a good day. c;

6 0
2 years ago
Read 2 more answers
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