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3 years ago

How many numbers are between 200 and 400 that begin or end with 3 explain how you got it please

2 answers:

4 0

Alright, all numbers that are in the 300 start with a 3, that's 100 numbers

hold a sec, it said 'or' not 'and', so we have to exclude those that start and end with a 3, like 303 and 313. that is 10 of them

in every hundred, there are 10 numbers that end with a 3 (the ones like 3,13,23,33,43,53,63,73,83,93)

so from 200 to 300, there are 10 of those
from 300 to 400 there are 10, wait we said 'or' so nope

100-10+10
so 100 numbers
if you are allowed to include numbers that start and end with 3 (like 303), then there are 120 numbers

GuDViN [60]3 years ago

3 0

Removed. I made a mistake haha and someone made the correct one :)

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OLEGan [10]

3wx^2

The third choice is the answer.

Answer :C

7 0

3 years ago

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Jenny works in a picture framing shop. She has a function f(x) equals X +2 that find the size of a square frame, given a picture

Iteru [2.4K]

Given:

The function for size of a square frame is

$f(x)=x+2$

where, x is the side length of the picture.

The function for the price in dollars for the frame is

$p(x)=3x$

To find:

The single function for the price of a picture with an edge length of x.

Solution:

We know that, for a picture with an edge length of x.

Size of a square frame = f(x)

Price in dollars for the frame = p(x)

Single function for the price of a picture with an edge length of x is

$(p\circ f)(x)=p(f(x))$

$(p\circ f)(x)=p(x+2)$ $[\because f(x)=x+2]$

$(p\circ f)(x)=3(x+2)$ $[\because p(x)=3x]$

Let the name of this function is c(x). So,

$c(x)=3(x+2)$

Therefore, the required function is $c(x)=3(x+2)$ .

8 0

3 years ago

The sum of the following algebraic expression 2x + 15, 7-8x and 3x - 41 is 30 find the value of x..

Ksju [112]

$\\ \tt \longmapsto2x + 15 + 7 - 8x + 3x - 41 = 30 \\ \\ \tt \longmapsto 2x - 8x + 3x + 15 + 7 - 41 = 30 \\ \\ \tt \longmapsto - 3x - 19 = 30 \\ \\ \tt \longmapsto 3x + 19 = - 30 \\ \\ \tt \longmapsto 3x = - 30 -19 \\ \\ \tt \longmapsto 3x = - 49 \\ \\ \tt \longmapsto x = - \frac{49}{3}$

3 0

3 years ago

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Can someone please help me <br>I need 7 and 8

exis [7]

Answer:

7.irrational

8.integer ,whole number ,rational number

Step-by-step explanation:

7. that dash line on top of decimal shows that its keeps repeating

8. -18/6 = -3

4 0

3 years ago

**PLEASE HELP**

Sav [38]

Your answer would be "D", because when finding the GCF of a term, you want to take the most out of it. Following the procedure of D, finding the greatest shared factor of 10 and 15 and the greatest shared power between exponent 2 and exponent 3, would allow you to find the GCF.

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3 years ago