3 years ago

Need help please!!!!!!!!

Mathematics

1 answer:

Sergeu [11.5K]3 years ago

3 0

Answer:

x=2 & x=-8 (C)

Step-by-step explanation:

Seperate into two equations:

x+3= -5

x+3= 5

Solve both equations by subtracting 3 from both sides

You should get the answers of x=2 and x= -8

Hope this helps!

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A UFO is coming in to pick up some test subjects. Their elevation above the ground is 60,000 feet. Their laser sights tell them

charle [14.2K]

Answer:

41.83°

Step-by-step explanation:

It is given that :

The vertical distance of the UFO from the ground = 60,000 feet

The diagonal distance of the landing area to the UFO = 90,000 feet

In order to find the angle of depression, we have to use the trigonometric ratios, i.e.,

$\sin \ \theta = \frac{\text{perpendicular distance}}{\text{hypotenus}}$

$\sin \ \theta = \frac{60,000}{90,000}$

$\sin \ \theta = \frac{2}{3}$

$\sin \ \theta = 0.667$

∴ $\theta = \sin^{-1 }(0.667)$

= 41.83°

3 0

3 years ago

Use substitution to solve the system. x=3y-8 3x-4y=-9

nadya68 [22]

x=3y-8
3x-4y=-9

We are told that:
x=3y-8

So replace x in 3x-4y=-9 with x=3y-8 like so:
3(3y-8)-4y=-9

Start by distributing the 3:
$(3)(3y)+(3)(-8)+-4y=-9$
Now you have:
$9y+-24+-4y=-9
$
Combine like terms, now you have:
$5y-24=-9
$
add 24 to both sides
$5y-24+24=-9+24
$
Now you have:
$5y=15$
Divide both sides by 5 to get:
y=3

Now that you know y=3 plug it into:
x=3y-8
x=3(3)-8
x=1

Final answer:
(1,3)

5 0

3 years ago

Read 2 more answers

Help.........................................................

Andreas93 [3]

Answer:

C and D have the same slope of 1

8 0

3 years ago

PLEASE HELP 50 POINTS

klemol [59]

I think it is the last one or the first one if I'm wrong I'm sorry