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3 years ago

Which one is a function ? a b c d ?

Mathematics

2 answers:

Olin [163]3 years ago

5 0

Answer:

Step-by-step explanation:

A function is a relation in which each y-value has a unique x-value. This means that in a function x-values should never repeat. In both A and C one x-value repeats, meaning they cannot be functions. However, in table B x-values don't repeat, only y-values which is allowed by the definition of function.

zmey [24]3 years ago

4 0

Answer:

Step-by-step explanation:

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A car bought for $13,000 depreciates at a rate of 15% per year. Use an exponential function to find the value of the car after 5

anygoal [31]

Answer:

$ 11093

Explanation:

Recall that the formula for compound interest is:

A = P ( 1 + r/ n ) n ( t )

−−−−−−−−−−−−−−−−−−−−−−

where:

A = future value

P = principal (starting) amount

r = annual interest rate, expressed as a decimal

n = number of times the interest is compounded in a year

t = number of years compound interest occurs for

1 . Start by substituting your known values into the formula. Note that the annual interest rate is − 0.15 since the car depreciates (becomes lower in value) each year.

A = 25000 ( 1 + − 0.15 1 ) 1 ( 5 )

2 . Solve for A .

A = 25000 ( 0.85 ) )5

A = 11092.63

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

A ≈ $ 11093 a

−−−−−−−−−−−−−−−

3 0

2 years ago

Read 2 more answers

Gabrielle's age is three times Mikhail's age. The sum of their ages is 20. What is Mikhail's age?

PtichkaEL [24]

Answer:

Mikhail is 5 years old

Step-by-step explanation:

Represent each member with a variable.

X= Gabrille

Y=Mikhail

X+Y=20 (sum of their ages is 20)

X=3y (Gabrille is 3 times Mikhails age)

Substitute 3Y into the first equation (simultaneous equation)

. 3y+y=20

. 4y=20 (divide both sides by 4)

y=5

To check your answer.

X+5=20

X=20-5

X=15

15 is 5 times 3.

4 0

2 years ago

Read 2 more answers

Which of the following are characteristics of the graph of the absolute value parent function?

lora16 [44]

The graph of an absolute value parent function is a pair of rays in quadrant 1 & 2, as shown in the graph.

The absolute value function is

f(x) = |x| or y = |x|

We also know that the absolute function can be wriiten as

y = |x|

=> y = x or y = -x

Comparing with y = mx + c

We get

m = 1 or m=-1 and c = 0

c = 0 implies that the line passes through the origin.

Hence the slopes shall be -1, 1 & the line passes through the origin.

Option A, B & D are the right answers.

7 0

3 years ago

Read 2 more answers

Nadine walked 1⁄4 of a mile, Janet walked 3⁄8 of a mile, and Perry walked 5⁄6 of a mile. Who walked the farthest? How much farth

nydimaria [60]

To compare, we will change all to the same denominators:

$\text {Nadine =} \dfrac{1}{4} = \dfrac{6}{24} \text { miles}$

$\text {Janet =} \dfrac{3}{8} = \dfrac{9}{24} \text { miles}$

$\text {Perry =} \dfrac{5}{6} = \dfrac{20}{24} \text { miles}$

Perry walked the furthest.

$\dfrac{20}{24} - \dfrac{6}{24} = \dfrac{14}{24} = \dfrac{7}{12}$

Perry walked 7/12 miles more than Nadine.

8 0

3 years ago

Read 2 more answers

How much will $5000 be worth in 5 years if it is compounded continuously at 3% interest.

mash [69]

Answer:

The final balance is $5,796.37.

The total compound interest is $796.37.

Step-by-step explanation:

3 0

3 years ago