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ziro4ka [17]
3 years ago
8

Plz help me with 7-12 I really need it asap

Mathematics
1 answer:
lukranit [14]3 years ago
6 0
There is number 12 that’s the only one I’m going to do

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Solve for the value of m.
ArbitrLikvidat [17]

Answer:

6°

Step-by-step explanation:

8m + 4° + 38° = 90°{ being complementary angles}

8m + 42° = 90°

8m = 90° - 42°

8m = 48°

m = 48° /8

m = 6°

Hope it will help :)

6 0
3 years ago
Read 2 more answers
Cant fully understand, help would be appreciated lol​
Ksenya-84 [330]
90+ 38 +x = 180
128 +x = 180
X= 52, y= 137

Hope this helps!
5 0
4 years ago
If f(x) = 5x, what is f-1(x)?
Triss [41]

Answer:

y = \frac{x}{5}

Step-by-step explanation:

I am going to assume that by "f-1(x)" you mean f(x)^{-1}, which makes this an inverse function problem. To find the inverse of a function, simply swap x and y, then solve for y.

x = 5y\\y = \frac{x}{5}

3 0
2 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
3х – 5y= 27<br>х +4y = -8 <br>Solve the system of equations.​
Doss [256]
3x - 5y = 27
-3x -12y = 24

-17y = 51
/-17 /-17
y = 3

x + 4(3) = -8
x + 12 = -8
-12 -12
x = -20

(-20, 3)
5 0
3 years ago
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