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sweet-ann [11.9K]
3 years ago
15

Kim works 4 hours more each day than jill does, and jack works 2 hours less each day

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
6 0
Where's the rest of the question
marusya05 [52]3 years ago
4 0

Answer:

The answer is 2(x+3)=3 * 2(x-1)-2x

Step-by-step explanation:

full question:

Kim works 3 hours more each day than Jill does, and Jack works 1 hour less each day than Jill does. Over 2 days, the number of hours Kim works is equal to the difference of 3 times the number of hours Jack works and the number of hours Jill works. How many hours does each person work each day? Let x be the number of hours Jill works in one day.

 2(x+3)=3 * 2(x-1)-2x

2(x+3)=6(x-1)-2x

2x+6=4x-6

2x+6-6=4x-6-6

2x=4x-12

-2x=-12

-2x/-2=-12/-2

x=6

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If the angles are represented in degrees, find both angles: sin(x+7)=cos(4x+8)
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Answer:

m\angle 1 = 22\degree

m\angle 2 = 68\degree

Step-by-step explanation:

\sin(x + 7) =  \cos(4x + 8) \\  \sin(x + 7) =  \sin \{90  - (4x + 8) \} \\  \{ \because \cos \theta =  \sin(90 \degree -  \theta)  \}\\  \therefore \: (x + 7) = 90 - (4x + 8) \\ x + 7 + 4x + 8 = 90 \\ 5x = 90 - 15 \\ 5x = 75 \\ x =  \frac{75}{5}  \\ x = 15

(x + 7)° = (15 + 7)° = 22°

(4x + 8)° = (4*15 + 8)° = (60 + 8)° = 68°

m\angle 1 = 22\degree

m\angle 2 = 68\degree

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3 years ago
A proportional relationship between the number of pounds of potatoes
shepuryov [24]

Answer:

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Step-by-step explanation:

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3 years ago
Put the following equation of a line into slope-intercept form, simplifying all
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y = mx + b
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4 0
3 years ago
Suppose a seventh graders birthday is today, and she is 12 years old. How old was she 3 1/2 years ago? Write an equation, and us
german

Answer:

he age of girl 3 \frac{1}{2} years ago is 8.5 years  .

Step-by-step explanation:

Given as :

The present age of seventh grader girl = 12 years

Let The age of her 3 \frac{1}{2} years ago = x years

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<u>Now, According to question</u>

The age of girl 3.5 years ago = 12 - 3.5

Or,  The age of girl 3.5 years ago = 8.5 years

Hence The age of girl 3 \frac{1}{2} years ago is 8.5 years  . Answer

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