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3 years ago

HEEELLPP is just one question!

Mathematics

1 answer:

defon3 years ago

3 0

Answer:

65°

Step-by-step explanation:

The missing angle is x°

tan x° = $\frac{opposite }{adjacent }$

tan x°= $\frac{850}{400}$

tan x° = 2.125

using a calculator:

tan^(-1)(2.125) =64.79 ≈65°

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-1 = -(x - 8)<br> What is x?

valentinak56 [21]

Answer:

Step-by-step explanation:

Step 1: Distribute

-1=-x+8

Step 2: Put terms on one side

-1=-x+8

-8 -8

__ __

-9 0

Step 3: Make "x" positive

-9=-x

*-1 *-1

__ __

9 x

9=x

Hope this helps!

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3 years ago

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Find the x and y intercepts<br> 6y = 3x - 24<br> x-intercept is I<br> y-intercept is

Elena L [17]

Answer:

x=2y+8

y= $\frac{1}{2}$ x-4

Step-by-step explanation:

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3 years ago

hi i have a question. A high speed submarine descended to a depth of 183.75 miles below sea level. The submarine descended 24.5

Irina-Kira [14]

Answer:

Step-by-step explanation:

183.75/ 24.5= m

7.5=m

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3 years ago

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The height of the tunnel at the center is 35ft, and the vertical clearance must be 21 ft at a point of 8ft from the center. Find

Zinaida [17]

Answer:

y=-0.215x^2+35

Step by Step:

Let, $h=0$ , $k=35$ , $x=8$ , $y=21$

We know that, the general equation of the parabola.

$y-k = a(x-h)^2$

$\Rightarrow y=a(x-h)^2+k .........(i)$

Substitute the value of $h, k, x, y$ in equation $(i)$ and find the value of $a.$

$21=a(8-0)^2+35$

$\Rightarrow 21=a\times 8^2+35$

$\Rightarrow 21=64a+35$

$\Rightarrow 64a=21-35$

$\Rightarrow 64a=-14$

$\Rightarrow a=\frac{-14}{65}$

$\Rightarrow a=-0.215$

Hence, the equation of the parabola is:

$y=-0.215x^2+35$

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3 years ago

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You need to make the bottom fraction a common multiple !!

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