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vaieri [72.5K]
2 years ago
13

Please help and explain these two problesm -2a + 4 (a - b ) + 5bx + 3 + 5 (x - 3)

Mathematics
1 answer:
Alenkinab [10]2 years ago
4 0
Just use the distributing property and combine like terms. There isn’t a definite answer since it is an expression.

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A tree casts a shadow 31 feet long when the angle of
Blababa [14]

Answer:

x=24.2198542

ROUND IF NEEDED

Step-by-step explanation:

We are trying to find the height of the tree or the vertical side

We are given

  • The angle of elevation or the angle at the ground ,38
  • The horizontal length, 31.

Since we have a side that is adjacent to that angle and we are trying find backside that us opposite of that angle

we are going to use tangent

\tan(x)  =  \frac{opp}{adj}

plug 38 in for x or theta, x for opp side and 31 for adjacent side

\tan(38)  =  \frac{x}{31}

Multiply 31 by both sides to find x

x=24.2198542

ROUND IF NEEDED.

3 0
3 years ago
What is the factored form of 9x^2-16
Scilla [17]

Answer:

Hey! The answer to you're question is (3x+4)  (3x+4)

Step-by-step explanation:

The best way of how to solve this problem is break it up.

If you know how to square root, that would come in handy!

The square root of 9 is 3! The square root of 16 is 4.

The ^2 is just telling you that there are two variables and you would need to split them.    :0

(a square root is 2 of the same numbers that equal something, like 6x6=36 ect.)

so 9x^2-16

     3x+4

     3x+4

Therefore!!!!!!  (3x+4) x (3x+4)

Dont feel bad for not asking :) we all get stuck sometimes, have a good rest of you're night sweetie!

7 0
3 years ago
Find the slope and the y-intercept of the line.<br><br> y=1/3x<br><br> slope:?<br> y-intercept:?
jekas [21]

Answer:

slope: 1/3; y-intercept: 0

Step-by-step explanation:

using the equation y = mx + b we can find the slope and y-intercept

the slope is m and the y-intercept is b

in this case m is 1/3

there is no b so the y-intercept is 0

6 0
3 years ago
What is the equation of the line that passes through the point (6, -6) and has a slope of -5/3 ​
stiks02 [169]

Answer:

y= -5/3x + 4

Step-by-step explanation:

hope this helps :)

6 0
3 years ago
Which line has an undefined slope?
zvonat [6]
(VUX) the slope is is on the x-axis
If it’s on the x-axis then it’s undefined
8 0
3 years ago
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