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lukranit [14]
3 years ago
13

The length of the track at talladega superspeedway is 2.66 miles. If the race is 188 laps long , how many kilometers do the driv

ers cover in 1 race ? Please help
Mathematics
1 answer:
Bess [88]3 years ago
5 0

Answer:

Step-by-step explanation:

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78+22=22+78<br> (16+4)+11=(11+4)+16<br> (12+8)+9=(9+8)+12
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3 years ago
If N is the population of the colony and t is the time in​ days, express N as a function of t. Consider Upper N 0 is the origina
lesya [120]

Answer:

(a)N(t)=Noe^{kt}

(b)5,832 Mosquitoes

(c)5 days

Step-by-step explanation:

(a)Given an original amount N_o at t=0. The population of the colony with a growth rate k \neq 0, where k is a constant is given as:

N(t)=Noe^{kt}

(b)If N_o=1000 and the population after 1 day, N(1)=1800

Then, from our model:

N(1)=1800

1800=1000e^{k}\\$Divide both sides by 1000\\e^{k}=1.8\\$Take the natural logarithm of both sides\\k=ln(1.8)

Therefore, our model is:

N(t)=1000e^{t*ln(1.8)}\\N(t)=1000\cdot1.8^t

In 3 days time

N(3)=1000\cdot1.8^3=5832

The population of mosquitoes in 3 days time will be approximately 5832.

(c)If the population N(t)=20,000,we want to determine how many days it takes to attain that value.

From our model

N(t)=1000\cdot1.8^t\\20000=1000\cdot1.8^t\\$Divide both sides by 1000\\20=1.8^t\\$Convert to logarithm form\\Log_{1.8}20=t\\\frac{Log 20}{Log 1.8}=t\\ t=5.097\approx 5\; days

In approximately 5 days, the population of mosquitoes will be 20,000.

7 0
3 years ago
Read 2 more answers
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x^2-25=0\\&#10;x^2=25\\&#10;x=\sqrt{25}\\ x=-5 \vee x=5

or

x^2-25=0\\&#10;(x+5)(x-5)=0\\&#10;x=-5 \vee x=5&#10;
7 0
4 years ago
What are the steps for using a compass and straight edge to construct a square
Korvikt [17]
1. Use a straightedge to draw line m and label a point on the line as point F

2. Construct a line perpendicular to line m through point F. Label a point on this line as point G.

3. With the compass open to the desired side length of the square, place the compass point on point F and draw an arc on line m and an arc on FG←→ . Label the points of intersection as points H and K.

4. Without changing the compass width, place the compass point on point H and draw an arc in the interior of ∠HFK.

5. Keeping the same compass width, place the compass on point K and draw an arc in the interior of ∠HFK to intersect the previously drawn arc. Label the point of intersection as point J.

6. Use the straightedge to draw JH¯¯¯¯¯ and JK¯¯¯¯¯.
5 0
3 years ago
Which logarithmic equation is equivalent to 3^2 = 9?
slavikrds [6]
The law of logarithms is 
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3 years ago
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