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3 years ago

Area codes are the first three digits of a 10-digit telephone number. The first digit of an area code cannot be 0 or 1.

Mathematics

1 answer:

astra-53 [7]3 years ago

7 0

Answer:A

Step-by-step explanation:because the numbers can be allowed to be repeated

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Which of the following options is an equivalent function to f(x) = 4(3)2x?

Nataliya [291]

Answer: Option D is correct .

Step-by-step explanation:

Since we have given that

$f(x)=4(3)2x$

$f(x)=24x$

In option D,

$f(x)=4(6x)\\\\f(x)=24x$

Otherwise ,

In all other options , there is no other function whose value comes out to be 24x.

Like , in option b,

$f(x)=4(9)=36x$

which is not equivalent to

$f(x)=4(3)2x$

Hence, option D is correct.

5 0

3 years ago

Read 2 more answers

2r2 + 3s3 − r2 + 4t2 − r2 if r = −2, s = −3, and t = 5.

Elza [17]

First, simplify the expression $2r^2 + 3s^3 - r^2 + 4t^2 - r^2.$ Here you have three terms with $r^2,$ group them in the following way:

$2r^2 + 3s^3 - r^2 + 4t^2 - r^2=2r^2-r^2-r^2+3s^3+4t^2=(2r^2-r^2-r^2)+3s^3+4t^2=$

$=r^2(2-1-1)+3s^3+4t^2=3s^3+4t^2.$

Then substitute s=-3 and t=5:

$3s^3+4t^2=3\cdot (-3)^3+4\cdot 5^2=3\cdot (-27)+4\cdot 25=-81+100=19.$

Answer: 19.

3 0

3 years ago

Read 2 more answers

9. Factorize: 6x2 - 19x + 14.

Stella [2.4K]

Answer:

Step-by-step explanation:

Here, we want to factor the given polynomial

We have this as;

6x^2 - 19x + 14

= 6x^2 -12x-7x + 14

= 6x(x-2) -7(x-2)

= (6x-7)(x-2)

6x^2-19x + 14 = (6x-7)(x-2)

4 0

3 years ago

In a class, 1/7 of the time is spent on Mathematics, 2/21 on English and 1/14 on games. What fraction of the time is spent on AL

likoan [24]

Answer:

5/21

Step-by-step explanation:

1/7 + 2/21 = ?

lcd of 7 and 21 is 21 so;

( 2/21 x 1/1) + 1/7 x 3/3) = 5/21

3 0

2 years ago

Please see the question

Bingel [31]

Step-by-step explanation:

I hope you are 100% clear.

3 0

3 years ago