4 years ago

How do I work this out?

Mathematics

1 answer:

aniked [119]4 years ago

4 0

I do not like these type of math homework questions ask someone else.

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PLZ HELP ME BY THE END OF THE DAY

nlexa [21]

$3x^{2} +1=28$

Step 1 : subtract 1 from both sides

$3x^{2} =27$

Step 2 : Divide both sides by 3

$\frac{\frac{3x^{2} }{3} }{\frac{27}{3} }$

$x^{2} = 9$

Step 3 : Find the square root of 9

$\sqrt{9} = 3$

x= (-3,3)

remember negative × negative = positive

6 0

4 years ago

1, 1, 4, 7, 8, 8, 8, 11, 15<br> What is the mode of this list of numbers?<br><br> answer asap!!!!

wlad13 [49]

Answer:

Step-by-step explanation:

its eight...........................

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3 years ago

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A coastline recedes at a rate of 3cm per year. How much of the coastline dissappears after 4 years?

Damm [24]

Answer:

12 cm of coastline

Step-by-step explanation:

Multiply the years (factor) by the receding amount, 3cm, (constant) BAM answer.

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3 years ago

1 At the post office 55% of the packages ship as priority mail. If 160 packages are

ziro4ka [17]

Answer:

Step-by-step explanation:

45% did not get shiped so 160*.45=72

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3 years ago

15-x=2(x+3) I need this solved and show me how you solved it

Sunny_sXe [5.5K]

15 - x = 2(x + 3)
15 - x = 2x + 6
15 = 3x + 6
9 = 3x
3 = x
x = 3

4 0

4 years ago