2 years ago

How many circular tiles are needed for pattern 20

Mathematics

1 answer:

Pepsi [2]2 years ago

8 0

What pattern are you talk about

You might be interested in

Elmer has a collection of 300 fossils. Of those, 21% are fossilized snail shells. How many fossilized snail shells does Elmer ha

kakasveta [241]

Use the percent proportion

21 x
—— = ——
100 300

to solve :
21 x 300 = 6300
6300 ÷ 100 = 63

Answer = 63 of Elmer’s shells are fossilized snail shells :)

4 0

3 years ago

Need help solving this 10x+32

Usimov [2.4K]

10x+32=0
10x=-32
x=-32/10 or -3.2 or -16/5

8 0

3 years ago

The table shows the concentration of a reactant in the reaction mixture over a period of time.

saveliy_v [14]

<h3>Option C</h3><h3>The average rate of the reaction over the entire course of the reaction is: $2.0 \times 10^{-3}$ </h3>

<em><u>Solution:</u></em>

Average rate is the ratio of concentration change to the time taken for the change

$Average\ rate = \frac{ \triangle c }{\triangle t }$

The concentration of the reactants changes 1.8 M to 0.6 M

here, the time interval given is 0 to 580 sec

Therefore,

$Average\ rate = \frac{1.8-0.6}{580} \\\\Average\ rate = \frac{1.2}{580} \\\\Average\ rate \approx 2.0 \times 10^{-3}$

Thus option C is correct

5 0

3 years ago

On a map the scale is 1 inch = 125 miles. What is the actual distance between two cities if the map distance is 4 inches?

iragen [17]

The distance between the two cities is 500 miles. Since each inch represents 125 miles, you multiply 4*125 to get 500 miles.

7 0

3 years ago

I need help please help me :(

zalisa [80]

EXPLANATION:
10 - ( 3 + 2*2 ) + 4
=> 10 - ( 3 + 4 ) + 4
=> 10 - 7 + 4
=> 3 + 4
=> 7

ANSWER: A. 7

Hope it helps u!

6 0

3 years ago