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Hatshy [7]
3 years ago
10

0.7x-1.4=-3.5 what is the value if x

Mathematics
2 answers:
solong [7]3 years ago
8 0

Answer:

x = -3

Step-by-step explanation:

Step 1: Add 1.4 to both sides.

0.7x − 1.4 + 1.4 = −3.5 + 1.4

0.7x = −2.1

Step 2: Divide both sides by 0.7.

0.7x/0.7 = −2.1/0.7

x= −3

Hope this helps

kherson [118]3 years ago
3 0

Answer:

x= -3

Step-by-step explanation:

add 1.4 on both sides giving you

0.7x/0.7 = -2.1/0.7 and 0.7x cancels out leaving you with -2.1 divided by 0.7

when you divide you Get  -3

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How many solutions does 2x+4y=8 have
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Infinitely many solutions

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6 0
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(20 points)Solve the equation cos x = sin (x + 22)
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Answer:

\bold{x = 34^\circ}

Step-by-step explanation:

Given:

cos x = sin (x + 22^\circ)

To solve:

The given equation.

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sin(90^\circ-\theta )=cos\theta

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cos(90^\circ-\theta )=sin\theta

We can apply above property to solve for x as per given equation.

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Changing cosx to sine form:

cosx=sin(90^\circ-x)

cosx=sin(90^\circ-x) = sin(x+22^\circ)

\therefore 90^\circ-x=x+22^\circ\\\Rightarrow 90^\circ-22^\circ=x+x\\\Rightarrow 2x=68^\circ\\\Rightarrow \bold{x = 34^\circ}

So, solution to the equation cos x = sin (x + 22^\circ) is:

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7 0
3 years ago
If you spend $10.35 total (t) purchasing songs online for $1.15 each, how many songs did you buy (s) if you followed the equatio
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4 0
3 years ago
Read 2 more answers
Need helppppp I’m stuckkkk
Galina-37 [17]

Answer:

b) 94

Step-by-step explanation:

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Then Subtract 86 from 180 to find "?"

180-86=94

I hope this helps!

6 0
3 years ago
Read 2 more answers
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