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g100num [7]
3 years ago
9

Each week your parents give you $5.25 for doing chores. After saving your money for 12 weeks, you spend $13.45. How much money d

o you have left?
Mathematics
1 answer:
Fittoniya [83]3 years ago
5 0
$5.25 times 12 = $63. $63-$13.45= $49.55
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Show that <br>sinx/1+cosx=tanx/2​
hammer [34]

Answer:

See proof below

Step-by-step explanation:

show that

sinx/1+cosx=tanx/2​

From LHS

sinx/1+cosx

According to half angle

sinx = 2sinx/2 cosx/2

cosx = cos²x/2 - sin²x/2

cosx = cos²x/2 - (1- cos²x/2)

cosx = 2cos²x/2 - 1

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Substitute into the expression;

sinx/1+cosx

= (2sinx/2 cosx/2)/2cos²x/2

= sinx.2/cos x/2

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PolarNik [594]
She bought 2 1/4 more blue ribbon.

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Decimals to fractions 3/4=?
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3 years ago
A radio controlled car travels 27 km and 28.5 minutes what is the speed of the car​
olya-2409 [2.1K]

Answer:

56.842 km/hr

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Step-by-step explanation:

speed = distance / time

let's assume your teacher wants it in km/ hr

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in meters/second:

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we can multiply both sides of the first equation by 28.5 to get

28.5 minutes = 1710 seconds

27 km = ? meters

1 km = 1000 meters

we can multiply both sides of the second equation by 27 to get

27km = 27000 meters

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3 0
2 years ago
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