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3 years ago

Given cos A = .25 find angle A in degrees. Round your answer to the nearest hundredth.

Mathematics

1 answer:

Oksana_A [137]3 years ago

8 0

For this you need to use the reverse cosine function
Cos^-1 (.25)
75.6

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0 ) Dan bought 7 new baseball trading cards to add to his collection. The next

harina [27]

Dan started with 69 cards

Step-by-step explanation:

Let x be the initial number of cards

Then

According to "Dan bought 7 new baseball trading cards to add to his collection"

$x+7$

The next day his dog ate half of his collection.

$\frac{1}{2}(x+7)$

There are now only 38 cards left.

$\frac{1}{2} (x+7) = 38$

Multiplying both sides by 2

$x+ 7 = 38*2\\x+7 = 76$

Subtracting 7 from both sides

$x+7-7 = 76-7\\x = 69$

Hence,

Dan started with 69 cards

Keywords: Linear equation, word problems

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

3(12-8)/2*5-4 simplify or evaluate the following expressions

vekshin1

Answer:

Step-by-step explanation:

12-8=4

3(4)=12

12/2=6

6*5=30

30-4

4 0

3 years ago

1 point

s2008m [1.1K]

Answer:

i do not know

Step-by-step explanation:

6 0

3 years ago

Simplify the following expression:<br> 4x - 3y + 2z - 3x - y + 3z = ?

nordsb [41]

Add all the like terms together so 4x-3x is x or 1x -3y-y is -4y 2z+3z is 5z so put them all together it's x-4y+5z

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3 years ago

1/8 divided by 2/7=?

Sliva [168]

1/112 or 0.008929 hope that helps

7 0

3 years ago

Read 2 more answers