A is your answer

We can cross multiply using x/70=30%/100

Solving it we get:
100x=2100 (70 times 30)
x=21

So we get a, 21 as your answer.

I hope this helped!

8 0

4 years ago

Read 2 more answers

Please help me with this IXL

denis-greek [22]

Step-by-step explanation:

Calculate the the total number of the boxes. We can calculate it by counting number of the rows and the number of the columns and then multiplying it.

Total number of rows = 10

Total number of columns = 10

Total boxes = 100

Shaded boxes = 72

We calculate %age by,

=> Selected boxes/Total boxes x 100

=> 72/100 x 100

=> 72%

Hope it helps :)

6 0

3 years ago

Log10 (x - 9) + log10 x = 1

Delicious77 [7]

Answer:

$\boxed{ \: \boxed{ x = 10} \: is \: applicable}$

Step-by-step explanation:

$if \: the \: question \: is \to \\ \boxed{log_{10}(x - 9) + log_{10}(x)= 1} \\ then \: the \: value \: of \: \boxed{ x }\: can \: be \: gotten \: by \to\\ log_{10} \{ x( x - 9)\} = 1 \\ log_{10}( {x}^{2} - 9x) = 1 \\ {10}^{1} = {x}^{2} - 9x \\ {x}^{2} - 9x = 10 \\ {x}^{2} - 9x - 10 = 0 \\ {x}^{2} + x - 10x - 10 = 0 \\ x( x + 1) - 10(x + 1) = 0 \\ (x + 1)(x - 10) = 0 \\ \boxed{\boxed{ x + 1 = 0 }\: or \: \boxed{ x - 10 = 0}} \\ \boxed{\boxed{ x = - 1 }\: or \: \boxed{ x = 10}}$

♨Rage♨

7 0

3 years ago

During a​ sale, a dress decreased in price from ​$90 to ​$72. What was the percent of​ decrease?

During a sale, a dress decreased in price from $90 to $72. What was the percent of decrease?