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REY [17]
3 years ago
10

Need a quick answer please

Mathematics
1 answer:
Over [174]3 years ago
5 0

Answer:

39

Step-by-step explanation:

6x-15+3x+6=90

Simplify: 9x-9=90

9x=99

x=11

3(11)+6

33+6

<H= 39

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Tcecarenko [31]
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2 years ago
What is the solution to 39/45 - 2/3
julia-pushkina [17]

Answer:

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Step-by-step explanation:

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2 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
The difference between a number and 8
stich3 [128]

Answer:

n-8

Step-by-step explanation:

The difference between a number and 8

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Let the number be n

n-8

3 0
3 years ago
Sally had 10 peaches left at are roadside fruit stand. she went to the Orchard and picked more peaches to stock up at the stand
Diano4ka-milaya [45]

Answer:73-10

Step-by-step explanation:

8 0
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