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Zielflug [23.3K]
3 years ago
6

Decrease $18 by 40% help

Mathematics
2 answers:
lesya692 [45]3 years ago
6 0

Answer:

$10.80

Step-by-step explanation:

First, you need to find 40% of $18.

0.40 × $18 = $7.20

Next in order to get the value of $18 decreased by %40, you need to subtract this value from $18.

$18 - $7.20 = $10.80

amm18123 years ago
4 0

Answer:f -55 percent

Step-by-step explanation:

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Answer:

30 cm²

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = \frac{1}{2} bh ( b is the base and h the height )

Here b = 6 and h = 10 , thus

A = \frac{1}{2} × 6 × 10 = 3 × 10 = 30 cm²

and 7² = 7 × 7 = 49

5 0
3 years ago
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Write 121 raised to the one-half power equals 11 as a logarithmic function
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a^b=c translates to log_a(c)=b
so
121^\frac{1}{2}=11 translates to log_{121}(11)=\frac{1}{2}
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2 years ago
Karl has $400 in a savings account. The interest rate is 10%, compounded annually. Which type of model best fits this situation?
n200080 [17]

Answer:

He prolly only got like 300 some left

Step-by-step explanation:


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The answer is attached.

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3 years ago
A bus driver pays all tolls, using only nickels and dimes, by throwing one coin at a time into the mechanical toll collector.
lutik1710 [3]

Answer: a) An = An-1 + An-2

b) 55ways

Step-by-step explanation:

a) a nickel is 5 cents and a dime is 10cent so a multiple of 5 cents is the possible way to pay the tolls in both choices.

Let An represents the number of possible ways the driver can pay a toll of 5n cents, so that

An = 5n cents

Case 1: Using a nickel for payment which is 5 cents, the number of ways given as;

An-1 = 5( n-1)

Case 2: using a dime which is two 5 cents, the number of ways is given as;

An-2 = 5(n-2)

Summing up the number of ways, we have

An = An-1 + An-2

From the relation,

If n= 0, Ao= 1

n =1, A1= 1

b) 45 cents paid in multiples of 5cents will give us 9 ways(A9)

From the relation, we have that

Ao = 1

A1 = 1

An =An-1 + An-2

Ao = 1

A1 = 1

A2 = A1+Ao = 1+1= 2

A3 = A2 + A1 = 3

A4 = A3+A2=5

A5=A4+A3=8

A6=A5+A4=13

A7 =A6+A5 = 21

A8= A7+A6= 34

A9= A8+A7= 55

So there are 55ways to pay 45cents.

4 0
2 years ago
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