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choli [55]
3 years ago
6

A disc has a diameter of 21 cm while a mini disc has a diameter of 14cm. Write the ratio of the mini disc diameter to the disc d

iameter.
Mathematics
1 answer:
Serjik [45]3 years ago
4 0

Answer:

mini disc diameter:disc diameter

14cm:21cm = 7:10.5 = 3.5:5.25 = 1:1.5

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Brian invests £600 into his bank account. He receives 3.2% per year compound interest. How much will Brian have after 6 years? G
Ivahew [28]

Answer:

Step-by-step explanation:

We would apply the formula for determining compound interest which 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 deposited

From the information given,

P = £600

r = 3.2% = 3.2/100 = 0.32

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

t = 6 years

Therefore,.

A = 600(1 + 0.032/1)^1 × 6

A = 600(1.032)^6

A = £724.82

8 0
3 years ago
Question attached - Interest question
lara31 [8.8K]
A) Sue
2300(1+2.4%)^3
= 2469.606195

2469.606195-2300
=£169.6061952

Bill
1800(1+3.4%)^3
=1989.913147

1989.913147-1800
=189.9131472

b) Bill
4 0
3 years ago
Read 2 more answers
What is the result of subtracting the polynomial (x²+3x) from the polynomial (-2x + 4x² + 5) ? A 3x² - x -5 B -3x²+x +5 C 3x² -
USPshnik [31]

Answer:

C

Step-by-step explanation:

We need to first rewrite the equation the proper way.

(-2x+4x²+5)-(x²+3x)

We need to distribute the negative thought the 2nd set of parenthesis.

-2x+4x²+5-x²-3x

combine the same terms

3x²-5x+5

4 0
3 years ago
What’s the answer, I will mark brainless
Oliga [24]

Answer:

68x

Step-by-step explanation:

you first of all find the area

1/2b×h=

1/2x×34

1/2×1/34x

68x

3 0
2 years ago
Nikki has an Apple iTunes gift card with a credit of $20. She spends $20 downloading music and games. Write an ADDITION equation
Amanda [17]

Answer:

Ill answer this and hope you meant subtraction if not, this is wrong.

20 - 20 = 0

Step-by-step explanation:

Well, you can't write an addition problem for subtraction which is the only thing happening in that situation, because Nikki is only losing money.

6 0
3 years ago
Read 2 more answers
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