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vagabundo [1.1K]
3 years ago
13

Last year, the textbook for a statistics class was $144. This year the textbook for the same class is $168. Determine the increa

se in price.
Mathematics
1 answer:
labwork [276]3 years ago
4 0

Answer:

there is an increase of 24 dollars.

Step-by-step explanation:

fist why? there are probably more students so they would need more books so what you would do is get  168-144 and get 24 dollars more of increase. I hope this is what it was asking. Hope you have a good day!

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62.50 or 0.625

Step-by-step explanation:

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Prove the following identity :<br>Sin α . Cos α .<br> Tan α =  (1 – Cos<br> α)  (1 + Cos<br> α)
Umnica [9.8K]
Let's work on the left side first. And remember that
the<u> tangent</u> is the same as <u>sin/cos</u>.

sin(a) cos(a) tan(a)

Substitute for the tangent:

[ sin(a) cos(a) ] [ sin(a)/cos(a) ]

Cancel the cos(a) from the top and bottom, and you're left with

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4 0
3 years ago
Read 2 more answers
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Step-by-step explanation:

4 0
3 years ago
3. Define a variable, write an equation, and solve the problem. Carla began a
faust18 [17]

Answer:

Carla has been running 7 miles each day for 13 days.

Step-by-step explanation:

Carla ran 3 miles on her first day, 5 miles on her second day and then 7 miles each day onward.

Let the number of days she ran 7 miles each day = x

Total distance run by Carla = 3 + 5 + 7(x)

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Equation representing her total run will be,

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7x = 99 - 8

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x = \frac{91}{7}

x = 13 days

Therefore, Carla has been running 7 miles each day for 13 days.

3 0
3 years ago
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