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2 years ago

72 divided by negative 9

Mathematics

2 answers:

Nataly [62]2 years ago

3 0

72 divided by negative 9 is -8

RSB [31]2 years ago

3 0

Answer:

-8

Step-by-step explanation:

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mrs_skeptik [129]

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3 years ago

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Please help. It’s not “yes, corresponding angles converse”

mr Goodwill [35]

Answer:

Yes,Corresponding Angles

Step-by-step explanation:

any pair of angles each of which is on the same side of one of two lines cut by a transversal and on the same side of the transversal.

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3 years ago

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P= 40 + 0.15(40)<br> = 40 +

lyudmila [28]

Answer:

Step-by-step explanation:

p=40+0.15(40)

=40+6

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3 years ago

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If sin(x) = 5/13, and x is in quadrant 1, then tan(x/2) equals what?

Rufina [12.5K]

$x$ is in quadrant I, so $0$ , which means $0$ , so $\dfrac x2$ belongs to the same quadrant.

Now,

$\tan^2\dfrac x2=\dfrac{\sin^2\frac x2}{\cos^2\frac x2}=\dfrac{\frac{1-\cos x}2}{\frac{1+\cos x}2}=\dfrac{1-\cos x}{1+\cos x}$

Since $\sin x=\dfrac5{13}$ , it follows that

$\cos^2x=1-\sin^2x\implies \cos x=\pm\sqrt{1-\left(\dfrac5{13}\right)^2}=\pm\dfrac{12}{13}$

Since $x$ belongs to the first quadrant, you take the positive root ( $\cos x>0$ for $x$ in quadrant I). Then

$\tan\dfrac x2=\pm\sqrt{\dfrac{1-\frac{12}{13}}{1+\frac{12}{13}}}$

$\tan x$ is also positive for $x$ in quadrant I, so you take the positive root again. You're left with

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3 years ago

What is 4(x-7)=2(x+3)?

hram777 [196]

Answer:

Isolate the variable by dividing each side by factors that don't contain the variable.

4(x−7)=2(x+3)

Simplify both sides of the equation.

4(x−7)=2(x+3)

4x+−28=2x+6

4x−28=2x+6

Subtract 2x from both sides.

4x−28−2x=2x+6−2x

x−28=6

Add 28 to both sides.

2x−28+28=6+28

2x=34

Divide both sides by 2.

2x/2 = 34/2

x = 17

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3 years ago

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