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3 years ago

Could someone help me with this, please?

Mathematics

2 answers:

oee [108]3 years ago

5 0

Answer:

1cm/year

Step-by-step explanation:

laila [671]3 years ago

5 0

Answer:

830 years ago

Step-by-step explanation:

I know that I might be wrong, but I divided 3,320 by 4 cm a year to find out how many years it took for the Atlantic Ocean to seperate Canada from Ireland. I really hope this helps!

Have a good day!

P.S: Sorry that I'm really late to this question, but I hope that it can help other people!

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I need help.can someone plz tell me the answer to this plz.

timofeeve [1]

Answer:

Step-by-step explanation:

The scale proportion is listed.

You need to cross multiply to get your answer, so 15 must be on top and x must be on the bottom.

7 0

3 years ago

Cassandra went to a baseball game and observed that Red Sox fans were sitting in groups of 20, while Yankees fans were sitting i

SVEN [57.7K]

Zero! Who could possibly a Red Sox Fan when the Yankees are in town? Let them mourn the loss of the Babe forever!

Now you have a group of 20 and a group of 15. What you are being asked is what is the smallest number that you could find that can be divided evenly by 15 and 20? Is it 20 * 15=300 or is it something smaller.

The way to solve this is to write out the factors of 15 and 20.

15 = 3*5

20 = 2 * 2 * 5

So the smallest number is

one 3

two 2s

one 5 Don't count these 5s twice.

LCM = 3 * 2 * 2 * 5

LCM = 60.

The smallest group she could see of Yankee Fans and Red Sox Fans is 60 if they both must be equal.

Answer 60 Red Sox Fans.

6 0

3 years ago

What is (f + g)(x)?<br>f(x) = -4x<br>g(x) = x² - 4

kondaur [170]

-4x+x^2-4
x^2-4x-4, is the answer

7 0

3 years ago

Ed is planning daily walking workouts on the same distance of 12 km in the morning and in the evening. Usually he is walking at

dezoksy [38]

Answer:

5 km/h

Step-by-step explanation:

Let x km/h be Ed's rate in the evening, then x+1 km/h is his rate in the morning. It takes him

$\dfrac{12}{x+1}$ hours in the morning to pass 12 km;
$\dfrac{12}{x}$ hours in the evening to pass 12 km.

In total, it takes him 5 hours 24 minutes ( $5\dfrac{24}{60}=5.4$ hours), then

$\dfrac{12}{x+1}+\dfrac{12}{x}=5.4.$

Solve this equation:

$\dfrac{12x+12(x+1)}{(x+1)x}=5.4,\\ \\12x+12x+12=5.4x^2+5.4x,\\ \\5.4x^2 -18.6x-12=0,\\ \\54x^2-186x-120=0,\\ \\9x^2 -31x-20=0,\\ \\D=(-31)^2-4\cdot 9\cdot (-20)=1,681=41^2,\\ \\x_{1,2}=\dfrac{-(-31)\pm\sqrt{41^2}}{2\cdot 9}=\dfrac{31\pm41}{18}=-\dfrac{5}{9},\ 4\ km/h.$

Ed's rate cannot be negative, thus x=4 km/h. His morning rate is x+1=5 km/h.

3 0

4 years ago

NEED THIS ANSWERED ASAP!

Karo-lina-s [1.5K]

<h2>PART A</h2><h3>5-Number-Summary:</h3>

Town A: 3, 4.5, 6, 9, 20

--------------------------

Minimum: 3

Quartile Q1: 4.5

Median: 6

Quartile Q3: 9

Maximum: 20

Town B: 3, 4, 6, 8.5, 9

---------------------------

Minimum: 3

Quartile Q1: 4

Median: 6

Quartile Q3: 8.5

Maximum: 9

---------------------------------------------------------------

<h3>Interquartile Range:</h3>

(Median of each set)

6 <em>(town A)</em> - 6 <em>(town B)</em> = 0

Are they symmetric?

<em>No, I believe not,</em> they don't align center in the same way, according to the pictures I've attached. The one with a short box is Town A, the bigger box is Town B.

5 0

3 years ago