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densk [106]
3 years ago
14

Cookies are on sale! Today each cookie costs $0.75 less than the normal price. Right now if you buy 7 of them it will only cost

you $2.80.Write an equation to determine the normal price of each cookie with (c).
I REALLY NEED HELP PLEASE
Mathematics
1 answer:
lina2011 [118]3 years ago
6 0

today's price is c - 0.75

7(c - 0.75) = 2.8

c - 0.75 = 0.4

c = 1.15

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Answer:

21\frac{3}{4}

Step-by-step explanation:

Step 1: Add the numbers.

20.25 can also be expressed as 20\frac{1}{4}, because \frac{2025}{100} = \frac{81}{4} = 20\frac{1}{4}. So if we add 20\frac{1}{4} and 11, we would get 31\frac{1}{4}

Step 2: Solve

31\frac{1}{4} -9\frac{1}{2}

  • Subtract the whole numbers

31-9=21

  • Combine the fractions

This means addition. Also, since our denominators are not the same value, we have to find the LCM (Least Common Denominator): What do 2 and 4 have in common that they can divide themselves by? 4. We know this because 2 divided by 4 is 2, and 4 divided by 4 is 1, so they can both divide themselves by 4.

\frac{5}{4}-\frac{1}{2}

LCM

\frac{5}{4}-\frac{2}{4} =\frac{3}{4}

Therefore, the simplified expression to this is 21\frac{3}{4}.

Learn more: brainly.com/question/403991

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3 years ago
How to find the missing side of this triangle
Aleksandr [31]

Answer

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I hope it helps

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Julio tested the point (4, –2) to see whether it is a solution to this system of equations. –3x – 2y = –8, y = 2x – 5 His work i
kolezko [41]

if it is solution point (4, –2) must satisfy both equations
(1) –3x – 2y = –8-->-3*4-2*(-2)=-8
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(2)  y = 2x – 5
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the point  (4, –2) is not solution of the system of equations
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gizmo_the_mogwai [7]

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Answer:

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Step-by-step explanation:

The y-intercept is h(0). When x=0, the exponential term evaluates to 1, so the y-intercept is the multiplier of the exponential term.

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The product of 25 and an unknown number is subtracted from 36. The result is -114.
svetlana [45]
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