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andre [41]
3 years ago
5

How do you write the algebraic notation when the scale factor is 3 ​

Mathematics
1 answer:
Alja [10]3 years ago
3 0

Answer:

(x,y) = (3x,3y)

Step-by-step explanation:

You might be interested in
The digit that makes 39,9?8 divisible by 9 is
Luden [163]

Answer:

?=7

Step-by-step explanation:

Here is a cool trick that I believe only works with 9.

Add the numbers, 3+9+9+8+x= divisible by 9.

3+9+9+7+8 is 36 which is the only number divisible by 9.

5 0
3 years ago
What is the least common denominator of the four fractions listed below 20 7/10, 20 3/4, 18 9/10, 20 18/25
Feliz [49]
So what you do is see all the denomenators and factor them (denomenaotrs are the bottom numbres)

10,4,10,25
10=2 times 5
4=2 times 2
10=2 times 5
25=5 times 5
we need to include all of them so we need at leas two 2's, and two 5's
2 times 2 times 5 times 5=100
leact common denomator is 100
7 0
3 years ago
PLS HELP SHOW ALL YOUR WORKING OUT BRAINLIEST! WILL BE GIVEN :D
aliina [53]

Answer:

(a) Five

(b) Thirteenth

Step-by-step explanation:

We have the mean is 12.6 and

that 11 occurs 4 times, 12 occurs 7 times, 13 occurs 9 times, and 14 occurs f times.

How many children are there in all (that is the sum of the frequencies).

4+7+9+f

20+f

Alright so the mean could be found by doing:

\frac{4(11)+7(12)+9(13)+f(14)}{20+f}

But we are given this is also equal to: 12.6.

So we have

\frac{4(11)+7(12)+9(13)+f(14)}{20+f}=12.6

I'm going to simplify what I can on top.

\frac{245+14f}{20+f}=12.6

I'm going to write 12.6 as \frac{12.6}{1} because I want to cross multiply:

\frac{245+14f}{20+f}=\frac{12.6}{1}

(245+14f)(1)=12.6(20+f)

Distribute:

245+14f=252+12.6f

Subtract 12.6f on both sides:

245+1.4f=252

Subtract 245 on both sides:

1.4f=7

Divide both sides by 1.4:

f=5

There are five 14 years old.

(b) I would say 13 is good age to represent this bunch.

The means was 12.6 which when rounded is 13.

The mode is 13 because it is the most occurring

The median is also 13. Why? If you list out the data 13 will be the middle number. Or you could say there are 25 kids and if I divide it by 2, I get 12.5.  This means you only need to count to the 13th kid with the ages in order to tell with the median is.

There are 4 eleven yr olds.

There are 7 twelve yr olds.  That is 11 kids so far.

So the median has to be included in the 9 thirteenth yr olds.

3 0
3 years ago
PICKING BRAINIEST<br> which equation could be used to solve for the length of XY?
liq [111]
The answer is in my attachment

5 1
3 years ago
Read 2 more answers
Please help, test due in 1 hour! I will give brainliest! :)
Aleksandr-060686 [28]

Answer:

Rectangle + half circle ?

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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