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Ainat [17]
3 years ago
15

Joan says that the expression

Mathematics
1 answer:
Gemiola [76]3 years ago
3 0

Answer:

Yes, Joan is correct

Explanation

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Find the value of each variable and the measure of each angle.
ANTONII [103]

Answer:

x = 14

Step-by-step explanation:

The angles with the measures (x+12) and (3x-16) are vertical, which makes their measures equal.

x+12 = 3x-16

On both sides, subtract 3x and subtract 12 to get this.

-2x = -28

Divide by -2.

x = 14

5 0
3 years ago
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There are 2 pens for every 9 pencils. There is a total of 16 pens in the classroom. How many pencils are in the classroom? *
Serggg [28]
I would say that it is 81. I hoped this helped and the steps are first what is 16 divided by 2 is 9 then you do 9 times 9 witch is 81.
3 0
3 years ago
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The expression cos^-1 (3/5) has an infinite number of values.. True or False.
Pavel [41]

Answer:

The given statement:

The expression cos^-1 (3/5) has an infinite number of values is a true statement.

Step-by-step explanation:

We are given a expression as:

\arccos (\dfrac{3}{5})

Let us equate this expression to be equal to some angle theta(θ)

i.e.

Let

\arccos (\dfrac{3}{5})=\theta\\\\\cos \theta=\dfrac{3}{5}

As we know that the limit point of the cosine  function is [-1,1]

i.e. it takes the value between -1 to 1 and including them infinite number of times.

Also,

-1< 3/5 <1

This means that the cosine function takes this value infinite number of times.

That is there exist a infinite number of theta(θ) for which:

\cos \theta=\dfrac{3}{5}

i.e. the expression:

\arccos (\dfrac{3}{5}) has infinite number of values.

6 0
3 years ago
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Quick Interest Rate Math help please !! :0
lara [203]
Answer : r = 4$


hope this helps
8 0
3 years ago
What is the answer<br> for this
horrorfan [7]

Answer: 2.5 // 2 1/2

Step-by-step explanation:

1/2 + 1/2 = 1

3/4 + 3/4 = 6/4 = 1 1/2

1 + 1 1/2 = 2 1/2

2 1/2 = 2.5

6 0
3 years ago
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