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vivado [14]
3 years ago
13

Phone numbers in Italy are in the format AB-CDDD-XXXX and have the following conditions · A can be any number 3-9 · B can be any

number 4-9 · C can be any number 5-9 · D can be any number 1-7 · X can be any number 0-9 How many total phone numbers can the Italians have? Question 4 options: 720,300,000 phone numbers 823,200,000 phone numbers 102,900,000 phone numbers 16,800,000 phone numbers
Mathematics
1 answer:
amm18123 years ago
8 0

Answer:

Hey there!

A: 7

B: 6

C: 5

D: 7

X: 10

7x6x5x7x7x7x10x10x10=720,300,000

Let me know if this helps :)

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Solve each proportion 3/39= y/13
Sphinxa [80]

Answer:

y = 1

Step-by-step explanation:

\frac{3}{39}  =  \frac{y}{13}

Cross multiply

39 = 39y

Divide by 39

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6 0
2 years ago
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The axis of symmetry for the graph of the function f start bracket x end bracket equals one-quarter x square plus b x plus 10 is
zimovet [89]

The value of b is -3.

<h3>What is axis of symmetry?</h3>

Axis of symmetry is a line that divides an object into two halves,thereby creation a mirror like reflection of either side of the object.

Now the given function is,

f(x) = 1/4 x^2 bx + 10

and axis of symmetry is at x = 6

Now the quadratic function in standard form is given as,

f(x) = a x^2 bx + c

By comprison we get,

a = 1/4

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Since axis of symmetry is a vertical line

x = -b/2a

Therefore,

6 = -b/2*(1/4)

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More about axis of symmetry :

brainly.com/question/3514150

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3 0
2 years ago
What is the area of the figure?
aniked [119]
See attached picture:

7 0
3 years ago
The following function represents the value of a house, in dollars, after x years: f(x) = 242,000(1.04)x What does 1.04 represen
zmey [24]
The number 1.04 represents the rate at which the house appreciates, or increases in its price annually.

As according to the values of an exponential equation, which is represented by this: y=ab^x, the a value represents the original price, the b value represents the rate of growth/decay (if growth, you add 1 to the rate, if decay, you subtract the rate from 1), and x represents the amount of times it decays or grows.

As according to the function <span> f(x) = 242,000(1.04)^x, 242,000 is the original price and 1.04 is the rate of growth since 1 has been added to the the 4% annual growth.</span>
5 0
3 years ago
Given log5 3=0.6826 and log5 8=1.2920, evaluate the expressions<br><br> Please help!?
gulaghasi [49]

Answer:

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b) 1.3906

Step-by-step explanation:

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b) log5 75/8 = log5 75 - log5 8 = log5 3×25 - log5 8=

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3 0
2 years ago
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