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Savatey [412]
3 years ago
11

Fifteen more than half a number is 9.

Mathematics
2 answers:
AURORKA [14]3 years ago
6 0

Answer:

15 + x/2 = 9 -> x=-12 (simplified)

Step-by-step explanation:

15 + x/2 = 9

15 more (add) x/2 (half a number) = (is) 9

7nadin3 [17]3 years ago
4 0

Answer:

-12

Step-by-step explanation:

-12/2 = -6

-6+15 = 9

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6 0
2 years ago
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A car is traveling down a highway at a constant speed, described by the equation LaTeX: d=65td=65t, where represents the distanc
maks197457 [2]

Answer: The car travels 97.5 miles in 1.5 hour.

Step-by-step explanation:

Given: A car is traveling down a highway at a constant speed, described by the equation , described by the equation d=65t, where represents the distance, in miles, that the car travels at this speed in<em> t</em> hours.

To find : Number of miles car travel in 1.5 hour.

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That means , the car travels 97.5 miles in 1.5 hour.

7 0
3 years ago
If sin ⁡x=725, and 0 ∠ x ∠ pi/2, what is the tan (x - pi/4)
krok68 [10]

Tan(x-\frac{\pi }{4}) = \frac{-17}{31}

<u>Step-by-step explanation:</u>

Here we have ,  sin ⁡x=7/25( given sin x = 725 which is not possible ) , 0 . Let's find tan (x - pi/4):

⇒ Tanx = \frac{sinx}{cosx}

⇒ Tanx = \frac{sinx}{\sqrt{1-(sinx)^{2}}}

⇒ Tanx = \frac{\frac{7}{25}}{\sqrt{1-(\frac{7}{25})^{2}}}

⇒ Tanx = {\frac{7}{25}}{\sqrt{(\frac{625}{625-49})^{}}}

⇒ Tanx = {\frac{7}{25}}(\frac{25}{24} )

⇒ Tanx = {\frac{7}{24}}

Now , Tan(x-\frac{\pi }{4}) = \frac{Tanx - Tan(\frac{\pi }{4} )}{1+ Tanx(Tan(\frac{\pi }{4} )}

⇒ Tan(x-\frac{\pi }{4}) = \frac{Tanx -1}{1+ Tanx(1)}

⇒ Tan(x-\frac{\pi }{4}) = \frac{\frac{7}{24}  -1}{1+\frac{7}{24} }

⇒ Tan(x-\frac{\pi }{4}) = \frac{\frac{7-24}{24} }{\frac{7+24}{24} }

⇒ Tan(x-\frac{\pi }{4}) = \frac{-17}{24} (\frac{24}{31} )

⇒ Tan(x-\frac{\pi }{4}) = \frac{-17}{31}

7 0
3 years ago
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