By inspection, LMNO is similar to PQRS.
For similar figures, corresponding sides are proportional, therefore

LM/PQ=MN/QR
Substituting values
4/2=6/c
Cross-multiply
4c=6*2=12
c=12/4=3

6 0

3 years ago

Marie 2,480 windows Marie washed 4 times as many windows as Elizabeth Elizabeth washed the same number of windows each day over

vlada-n [284]

Answer:

Elizabeth washes 99 windows each day.

Step-by-step explanation:

Given:

Total number of windows (N) = 2480

Marie washes windows = 4 times Elizabeth washes.

Elizabeth washes same number of windows for 5 days.

Let the number of windows washed by Elizabeth each day = 'x'.

Therefore, over the 5 days, the windows washed by Elizabeth = $5x$

Now, as per question:

Marie washes windows = 4 times Elizabeth washes.

So, number of windows washed by Marie = $4(5x)=20x$

Now, total number of windows = Windows washed by Marie + Windows washed by Elizabeth

So,

$2480=20x+5x\\\\2480=25x\\\\x=\frac{2480}{25}\approx99$

Therefore, Elizabeth washes 99 windows each day.

7 0

3 years ago

What is the expression in exponential form and value of -10x-10

mamaluj [8]

It's very important to use the symbol " ^ " here to denote exponentiation.

You probably meant "-10x^(-10), which would be "-10 times x to the minus tenth power."

If you want the value, you could do the following:

-10 1
------------------ = - ---------- = - 10^(-9).
10^10 10^9

7 0

3 years ago