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belka [17]
4 years ago
9

In Erica's class of 40 students, 45% of the students report that Art is their favorite subject. How many student

Mathematics
1 answer:
erica [24]4 years ago
3 0

45% of 40 is 18.

Hope this helps!

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A calendar reseller purchases calendars for $5 each and applies a 14.50% markup on selling price. What is the selling price of e
max2010maxim [7]

Answer:

$7.25

Step-by-step explanation:

I'm pretty sure I'm correct. Hope this helps and have a nice day!

7 0
3 years ago
2 factors that add to 6 but multiply to 60
hodyreva [135]

Answer:

The short answer is there isn’t.

Start by writing each of these as an expression:

x * y = 60

x + y = 7

Next, solve each for the same variable; in this case, y:

(x * y) / x = 60 / x

.: y = 60 / x

(x + y) - x = 7 - x

.: y = 7 - x

Next, replace y of the second expression to the first

y = 60 / x & y = 7 - x

.: 7 - x = 60 / x

Now, solve for x:

(7 - x) * x = (60 / x) * x

.: x * 7 - x^2 = 60

This is quadratic, so write it in the form of ax2 + bx + x = 0

(-1)x^2 + (7)x + (-60) = 0

.: a = -1, b = 7, c = -60

Finally solve for b:

x = (-b +- sqrt(b^2 - 4*a*c)) / 2a

.: x = (-7 +- sqrt(7^2 - 4*-1*-60)) / (2 * -1)

.: x = (-7 +- sqrt(49 - 240)) / -2

.: x = (-7 +- sqrt(-191)) / -2

The square root of a negative value is imaginary and thus there’s no real answer to this problem.

8 0
3 years ago
105.6 liters per hour to liters per minute
Jlenok [28]

Answer:

1.76 liters per minute.

Step-by-step explanation:

The answer is 1.76 because 105.6 divided by 60 is 1.76

P.S Can I have brainliest?

8 0
3 years ago
Read 2 more answers
5) Add the product of 6 and 4 to the difference of 7 and 3
MA_775_DIABLO [31]
The product of 6 and 4 is 24. The difference of 7 and 3 is 4.
Therefore, 24+4 = 28.
6 0
3 years ago
Read 2 more answers
HELPPP MEE ALGEBRAA IMAGE BELOW
Julli [10]

Answer:

f(x)=0 or 8 I'm honestly not sure which but I know one of these is right

Step-by-step explanation:

subtract x^2-2x from both sides -x^2+8x=0

factor left side of the equation x(-x+8)=0

set factors equal to zero

x=0   or    x=-x+8=0

x=0   or    x=8

HOPE THIS HELPS!!! :)

4 0
3 years ago
Read 2 more answers
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