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Alona [7]
3 years ago
6

Twice the difference of a number and three is negative two. Find the number

Mathematics
1 answer:
lianna [129]3 years ago
8 0
<h3>Answer:</h3>

x=2

<h3>Explanation:</h3>

Represent the sentence mathematically. 2(x-3)=-2

Distribute. 2x+(2*-3)=2x-6=-2

Add 6 on both sides. 2x=-2+6=4

Divide both sides by 2. x=2

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If an item is marked up 15% and the new cost is 155.25 what was the original price
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(1-0.15)=0.85
0.85 (155.25)=131.962
    estimated answer
131.962 is about $132.00
4 0
3 years ago
Find x. <br><br> _______________
devlian [24]

Answer:

16

Step-by-step explanation:

If you have any questions about the way I solved it, don't hesitate to ask

7 0
3 years ago
Is the function even or odd?
sweet [91]

Answer:

f(\theta)=\cos(\theta) is an even function.

Step-by-step explanation:

Recall when it means when a function is even or odd. An even function has the following property:

f(-x)=f(x)

And an odd function has the following property:

f(-x)=-f(x)

So, let's test some values for cos(x).

Let's use π/3:

f(\pi/3)=\cos(\pi/3)

From the unit circle, was can see that this is 1/2 (refer to the x-coordinate).

Now, let's find -π/3. This is the same as 5π/3. Thus:

f(-\pi/3)=\cos(-\pi/3)

And again from the unit circle, we can see that this is 1/2.

Therefore, despite the negative, the function outputs the same value.

Cosine is an even function.

Notes:

Cosine is an even function and sine is an odd function. It's helpful to remember these as they can help you solve some trig problems!

6 0
3 years ago
A turtle can walk 1/12 of a kilometer in an hour. The turtle is 1/5 of a kilometer away from a pond. At this speed how long will
Cloud [144]

Answer:

2.4 hours

Step-by-step explanation:

Get common denominators -

1/12 x 5/5 = 5/60

1/5 x 12/12 = 12/60

The turtle walks ata 5/60 a kilometer an hour.

divide remaining time by 5/60

(12/60) / (5/60) = 2.4 hours

4 0
3 years ago
Read 2 more answers
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Answer:

375+215 is greater than or equal to p

Step-by-step explanation:

quick maths

8 0
3 years ago
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