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GenaCL600 [577]
3 years ago
8

Michelle bought 12 cookies for $2.70. At that rate, how much would it cost her to buy 20 cookies?

Mathematics
1 answer:
ANEK [815]3 years ago
7 0

Answer:

12 : $2.70

20 : x

then 12x = 20(2.70)

12x = 54

x = $4.50

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-65/64 as a mixed number
Gre4nikov [31]

-1  1/64

Hope that helps!!

3 0
3 years ago
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(x+1)(2x-4)(1/x+1) = (x+1)(2x-4)(1-5/2x-4)
Sunny_sXe [5.5K]

Solution:

(x+1)(2x-4)(\frac{1}{x}+1)=(x+1)(2x-4)(1-\frac{5}{2x}-4)\\(x+1)(2x-4)(\frac{1}{x}+1)-(x+1)(2x-4)(1-\frac{5}{2x}-4) = 0\\(x+1)(2x-4)(\frac{1}{x}+1-(1-\frac{5}{2x}-4))=0\\(x+1)(2x-4)(\frac{1}{x}+1-(-3\frac{5}{2x}))=0\\(x+1)(2x-4)(\frac{1}{x}+1+3+\frac{5}{2x})=0\\(x+1)(2x-4)(\frac{1}{x}+4+\frac{5}{2x})=0\\(x+1)(2x-4)(\frac{5x^{2}+8x+2}{2x} )=0\\

x+1=0\\x=-1\\\\2x-4=0\\x=2\\\\\frac{5x^{2}+8x+2}{2x}=0\\x=\frac{-4+\sqrt[]{6}}{5}\\x=\frac{-4-\sqrt[]{6}}{5}

Answer:

x=-1\\x=2\\x=\frac{-4+\sqrt[]{6}}{5}\\x=\frac{-4-\sqrt[]{6}}{5}

<em>Hope this was helpful.</em>

8 0
3 years ago
(SAT Prep) An airplane has leveled off (is flying horizontally) at an altitude 12000 feet. When the airplane is at point P its p
serious [3.7K]

Answer:

m∠PRT = 114°

m∠T = 37°

m∠RPT = 29°

Step-by-step explanation:

This question is incomplete (without a picture) ; here is the picture attached.

In this picture, an airplane is at an altitude 12000 feet.

When the plane is at the point P, pilot can observe two towns at R and T in front of plane.

We have to find the measure of ∠PRT, ∠T and ∠RPT.

Form the figure attached segment PS is parallel to RT and PR is a transverse.

We know that internal angles formed on one side of the parallel lines by a transverse are supplementary.

Therefore, x + 66 = 180

x = 180 - 66 = 114°

∠PRT = x = 114°

m∠RPT = m∠SPR - m∠SPT

             = 66 - 37

             = 29°

Since m∠PRT + m∠T + m∠RPT = 180°

114 + ∠T + 29 = 180

143 + ∠T = 180

∠T = 180 - 143

∠T = 37°

8 0
3 years ago
Read 2 more answers
A line passes through the points(-9,9) and has a slope of 2/3​
Anni [7]
ANSWER

y = 2/3x + 15

Explanation:

Equation used: y - y1 = m( x - x1 )

y - 9 = 2/3 ( x - -9 )

y - 9 = 2/3x + 6 ( distribution )

y - 9 = 2/3x + 6 ( add 9 to 6 )

y = 2/3x + 15
4 0
3 years ago
What are the greatest numbers : 4, -8, 4, 8, 7, -3, -9, 2, 6, 1, -5, 5, -2, 0.
myrzilka [38]

Answer:

Step-by-step explanation:

I would say 8 is the greatest number

the order from least to greatest

-9,-8,-5,-3,-2,0,1,2,4,4,5,6,7,8

7 0
3 years ago
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