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Dominik [7]
3 years ago
13

What is the factored for of x^2-x-2?

Mathematics
1 answer:
Olenka [21]3 years ago
4 0
B because it makes sense
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The length of a rectangle is 2 inches more than twice its width write an equation relating the length of the rectangle to its wi
Neko [114]
Length of Triangle= 2(W) +2

i dont know if im right or not.
4 0
3 years ago
What is the value of x in the equation x – y = 30, when y = 15?
slamgirl [31]
Since <span><span>−y</span></span> does not contain the variable to solve for, move it to the right side of the equation by adding <span>y</span> to both sides.<span>x=<span>y+<span>30</span></span></span>
5 0
3 years ago
If 3 is added to a number and multiplied the result by 5 gives 55 what is the number​
MakcuM [25]

Answer:24

Step-by-step explanation:Let the number we seek be X.

We are Given:

1). (5X+3 ) x (2) = 30

Expand and Rearrange.

(10X +6 ) = 30.

10X = 24.

2). X equals 2.4 . This is the answer for the number we seek.

Always check the answer.

This is Good Working Practice ALWAYS.

For Exams or similar remember:

Presentation (Neat & Tidy), Method & Layout (Show you understand), Accuracy.

All these count in most exams.

The first two points help greatly if your Answer is in error, but your METHOD Is CLEAR & CORECT.

Similarly, if the Check is wrong, mention this, but also, if the case, mention e.g. time ran out .. You may be credited as AWARE if your presentation and Method show you understood what to do and why.

CHECK: Substitute the answer for X into the original equation 1).

Equn. 1). (5X +3)*2 = 30.

Put in the value for X. Expand & Re-arrange.

(( 5 ).( 2.4 ) + ( 3 ).( 2 ) = 30.

( 12 + 6 ) = 30.

24 = 24. Checked & Agreed.

That’s about it.

6 0
2 years ago
What is the solution to the equation -5 =8m +12 /4
Dima020 [189]
m = -1

-5 = 8m + 12/4
-5 - 12/4 = 8m
4(-5) - (12/4) = 4(8m)  
 
*to remove the denominator, multiply each figure by 4.

-20 -12 = 32m
-32 = 32m
-32/32 = 32m/32
-1 = m

m = -1

To check:

-5 = 8m + 12/4
-5 = 8(-1) + 3
-5 = -8 + 3
-5 = -5

3 0
3 years ago
Read 2 more answers
Help please!!!
Maslowich

y varies directly with x.

The constant of variation is k = 7

Step-by-step explanation:

We have to check whether both vary directly with each other or not.

Every pair of x and y will be considered one by one

If y varies directly with x, it should satisfy y = kx or k = yx

So,

For x= -2, y=-14

-14 = -2k\\k = \frac{-14}{-2}\\k = 7

For

x=3, y=21

21 = 3k\\ k = \frac{21}{3}\\k = 7

For

x=5, y=35

35 = 5k\\ k = \frac{35}{5}\\k = 7

As k is same for all pairs of x and y, it can be concluded that:

y varies directly with x.

The constant of variation is k = 7

Keywords: Proportion, variation

Learn more about proportion at:

  • brainly.com/question/10703930
  • brainly.com/question/10772025

#LearnwithBrainly

6 0
3 years ago
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