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2 years ago

Please help a girl out!! really confused

Mathematics

1 answer:

Flura [38]2 years ago

5 0

Answer:14

Step-by-step explanation:To find the mean first add everything together and that will give you 84 then divide the total amount with the total amount of number which is 6 and your answer is 14.

Step one:20+18+16+15+12+3=84 Step two:find the total amount of numbers which is 6. Step three:divide 84÷6=14

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The lung capacity of the blue whale is 5100L. Convert this volume into gallons. Express your answer to two significant figures a

Vedmedyk [2.9K]

By definition, we have that the conversion of a US gallon to liters is given by:
1 liter = 3.78541 gallons
Therefore, we can apply the following rule of three:
1 liter ---------------------> 3.78541 gallons
5100 liters --------------> x
Clearing x we have:
$x = (5100) * (3.78541)

x = 19305.591$
two significant figures:
$x = 19000
$
Answer:
The lung capacity of the blue whale is:
$x = 19000 gallons$

8 0

3 years ago

Solve the system of linear equations by substitution.<br><br> y = 2x + 8<br> y = -2x

posledela

Answer:

(- 2, 4 )

Step-by-step explanation:

y = 2x + 8 → (1)

y = - 2x → (2)

substitute y = 2x + 8 into (2)

2x + 8 = - 2x ( add 2x to both sides )

4x + 8 = 0 ( subtract 8 from both sides )

4x = - 8 ( divide both sides by 4 )

x = - 2

substitute x = - 2 into (2)

y = - 2(- 2) = 4

solution is (- 2, 4 )

6 0

2 years ago

Read 2 more answers

What's the answer I really need help

daser333 [38]

Link to the question hope this helps

7 0

3 years ago

For which inequality is {x | x R, x > 6} the solution set?

CaHeK987 [17]

Answer:

Step-by-step explanation:

<em>B: 2X + 12 > 3</em>

2x > -9

x> -9/2

<em>C: 2X - 5 > 7</em>

2x > 12

x > 6

<em>D: 2x - 6 > 24</em>

2x > 30

x > 15

Hope this helps ^-^

6 0

2 years ago

What solution is 2x+6=6+2x?

Reptile [31]

Answer:

Step-by-step explanation:

2x + 6 = 6 + 2x

4 + 6 = 6 + 4

10 = 10

8 0

2 years ago