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Nezavi [6.7K]
2 years ago
14

Identifying functions

Mathematics
1 answer:
Gelneren [198K]2 years ago
5 0

Answer:

If all possible vertical lines will only cross the relation in one place, then the relation is a function. This works because if a vertical line crosses a relation in more than one place it means that there must be two y values corresponding to one x value in that relation.

Step-by-step explanation:

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Sally invests £8000 in a savings account. The account pays 2.8% compound interest per year work out the value of her investment
Alborosie

Answer: the value of her investment after 4 years is £8934.3

Step-by-step explanation:

The formula for determining compound interest is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount invested.

t represents the duration of the investment in years.

From the information given,

P = 8000

r = 2.8% = 2.8/100 = 0.028

n = 1 because it was compounded once in a year.

t = 4 years

Therefore,

A = 8000(1+0.028/1)^1 × 4

A = 8000(1+0.028)^4

A = 8000(1.028)^4

A = £8934.3 to the the nearest penny

6 0
3 years ago
I have a question what is perimeter cuz I forgot what it was hi hi hi hi hi
andre [41]

Answer: Perimeter is when u add all around

Example: The perimeter of a square is 4,5,3,7

Add: 4+5+3+7 get 19

The perimeter will be 19

4 0
3 years ago
Read 2 more answers
The price of a technology stock has dropped to $9.64 today. Yesterday's price was $9.75. Find the percentage decrease. Round you
Ket [755]

Answer:

1.1%

Step-by-step explanation:

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7 0
2 years ago
Proportions - if 1 subscription costs $21, how much is 28 subscriptions?
Len [333]
1 subscription = $21
28 subscriptions = x
You know 1 subscription is $21
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28 subscriptions cost $588
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21x = y
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6 0
3 years ago
Given: Circle O; Angle A intercepts Arc B C D ; Angle D intercepts Arc B C Prove: Angle A is-congruent-to Angle D Circle O is sh
meriva

Answer:

A. Inscribed angles theorem

Step-by-step explanation:

A.inscribed angles theorem

B.third corollary to the inscribed angles theorem

C.central angle of a triangle has the same measure as its intercepted arc.

D.Angle formed by a tangent and a chord is half the measure of the intercepted arc.

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3 years ago
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