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3 years ago

Fill in the blank with a variable term so that the given value of the variable will make the equation true.

Mathematics

1 answer:

netineya [11]3 years ago

6 0

Answer:

a. x + 4 = 12; x = 8

b. 2x + 4 = 12; x = 4

Step-by-step explanation:

a. for x = 8; let unknown be k

k + 4 = 12

k = 12 - 4 = 8

k/x = 8/8 = 1 which is the coefficient of x

therefore x + 4 = 12 when x = 8 is correct

b. for x = 4

k + 4 = 12

k = 8

k/x = 8/4 = 2 which is the coefficient of x

therefore 2x + 4 = 12 when x = 4 is correct

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When a breeding group of animals is introduced into a restricted area such as a wildlife reserve, the population can be expected

jasenka [17]

Answer:

A. Initially, there were 12 deer.

B. N(10) corresponds to the amount of deer after 10 years since the herd was introducted on the reserve.

C. After 15 years, there will be 410 deer.

D. The deer population incresed by 30 specimens.

Step-by-step explanation:

$N=\frac{12.36}{0.03+0.55^t}$

The amount of deer that were initally in the reserve corresponds to the value of N when t=0

$N=\frac{12.36}{0.33+0.55^0}$

$N=\frac{12.36}{0.03+1} =\frac{12.36}{1.03} = 12$

A. Initially, there were 12 deer.

B. $N(10)=\frac{12.36}{0.03 + 0.55^t} =\frac{12.36}{0.03 + 0.0025}=\frac{12.36}{y}=380$

B. N(10) corresponds to the amount of deer after 10 years since the herd was introducted on the reserve.

C. $N(15)=\frac{12.36}{0.03+0.55^15}=\frac{12.36}{0.03 + 0.00013}=\frac{12.36}{0.03013}= 410$

C. After 15 years, there will be 410 deer.

D. The variation on the amount of deer from the 10th year to the 15th year is given by the next expression:

ΔN=N(15)-N(10)

ΔN=410 deer - 380 deer

ΔN= 30 deer.

D. The deer population incresed by 30 specimens.

8 0

2 years ago

The graph shows the function f(x) = 2* What is the value of xwhen f(x) = 8?

soldi70 [24.7K]

Answer:

x=3

Step-by-step explanation:

f(x) = 2^x

Let f(x) =8

8 = 2^x

Rewriting 8 as 2^3

2^3 = 2^x

The bases are the same so the exponents are the same

3=x

3 0

2 years ago

Read 2 more answers

How many feet are in 40 inches

Solnce55 [7]

Answer:

3.33

Step-by-step explanation:

4 0

3 years ago

Solve for w p=1.2w/h^2

andreyandreev [35.5K]

Solve for w:
p = (1.2 w)/h^2
(1.2 w)/h^2 = (6 w)/(5 h^2):
p = (6 w)/(5 h^2)
p = (6 w)/(5 h^2) is equivalent to (6 w)/(5 h^2) = p:
(6 w)/(5 h^2) = p
Multiply both sides by (5 h^2)/6:
Answer: w = (5 h^2 p)/6

6 0

2 years ago

Item 14

andreyandreev [35.5K]

Your collection's mean answers

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median - 1929.5

range - 15

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Would really appreciate a brainliest!!

8 0

2 years ago