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mamaluj [8]
4 years ago
11

Plzzzzzzzzzzz helpppppppppppppp

Mathematics
1 answer:
Crank4 years ago
5 0
Look at the fact that there are 45 marbles first. There is no clue just how many blues there might be. but there should not be as many as 18. The only way you can solve this is with a proportion. You can also ask yourself if Jon draws 45 instead of 60 times, how many marbles will he draw.

18/60 = x / 45 Cross multiply
18*45 = 60*x
810 = 60x
810 / 60 = x
x = 13.5

He can't draw 1/2 a marble. The answer is either 13 or 14 depending on what you have been told about rounding. Statistically I would pick 13 because it is  a conservative choice.
You might be interested in
help solve the equation justin has 5.50 more than eva emma has $10 dollars less than justin how much does if they have if the ha
frez [133]
In solving this type of problem always look for the person you don't have any information about in this case  it's Eve therefore Eve is X, Justin has $7.50 more than Eve, therefore 
X+$7.50 is Justin and Emma has $12 less than Justin, therefore subtract $12 from Justin X+$7.50-$12, since the total amount is $63 add all the numbers and equal them to $63.
x+7+x+7.5-12+ x=63
3x+3=63
3x=60
x=20
Plug in the x for each person
therefore Eve=$20
Justin=$20+$7.50= $27.50
Emma has $12 less than Justin therefore $15.50
Add all the money and it equals $63
5 0
3 years ago
Help me I forgot everything from last year
irakobra [83]

Answer:

17/24

Step-by-step explanation:

With unlike denominators find the Least Common Denominator (LCD)

LCD = 24

Multiplying numerators and denominators to get the LCD in all fraction denominators

= 2×4/6×4 + 3×3/8×3

Then rewriting the equation with the equivalent fractions

= 8/24 + 9/24

With like denominators we can operate on just the numerators

= 8/24 + 9/24

= 17/24

3 0
3 years ago
Lim as x approaches pi/4:
lozanna [386]
\lim_{x \to  \pi /4}  \frac{tan x - 1}{x- \pi /4}  =  \frac{0}{0}
With L` Hospital`s Rule ( ( tan x ) ` = 1/ cos^2 x ) :
\lim_{x \to  \pi /4}  \frac{1}{cos ^{2} x} =  \\ = \frac{1}{cos ^{2} ( \pi /4)}  = \\  \frac{1}{1/2}   =  2


5 0
4 years ago
I'm so fricking boreddddddddddddddddddd.
Alexeev081 [22]

Answer:

mee tooo

Step-by-step explanation:

lol ;)

8 0
3 years ago
Read 2 more answers
Find (a) PQ to the nearest tenth and (b) the coordinates of the midpoint of PQ.
Alex787 [66]

Answer:

midpoint is y2+y1/2, x2+x1/2 therefore 3+1/2,-6+-4/2,4/2,-10/2 and the answer is (2,-5 )

8 0
3 years ago
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