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Elina [12.6K]
3 years ago
6

Describe algebraically the relationship between x1 and x2

Mathematics
1 answer:
DanielleElmas [232]3 years ago
8 0
X2 is double the amount of x1
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5ab-2 with positive exponents
saw5 [17]

Step-by-step explanation:

When the base is even it is positive when the base is odd it is negative

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3 years ago
If the signs of a coordinate of collinear points (-6,-2), (-5,2) and (-4,6) are reversed, would it still be collinear?
Darina [25.2K]
Hello,
the transformation that applies (x,y) to (-x,-y) is a symmetry by the origin.
Every symmetry transforms a line into a  line.

So the new points are also collinear.

4 0
3 years ago
The original price of a scarf was $16. During a store closing sale, a shopper saved $12 on the scarf. What percentage discount d
Andreyy89

Answer:

The discount which she received is 25 %

Step-by-step explanation:

Given as :

The original price of scarf = $ 16

The selling price of scarf = $ 12

Let The discount percentage = d %

So,

Discount percentage = \frac{\textrm market price-\textrm selling price}{\textrm market price} × 100

or, d % = \frac{16-12}{16} × 100

Or, d % = \frac{400}{16}

∴ d = 25%

Hence The discount which she received is 25 %  Answer

6 0
3 years ago
How can you find approximations (estimations) of square roots?
Luda [366]
To find approximations of square roots, you should find the nearest prefect square. For example if your looking to approximate the square rot of 10, the closest perfect square is 9 and the square root of that is three. Thus, you can say that the square root is about 3. Hope this helps and please mark brainiest. :D
3 0
3 years ago
Read 2 more answers
Julio bought 4 pencils and 3 erasers for $0.37 and David paid $0.33 for 3 pencils and 4 erasers. What is the cost of one pencil?
nirvana33 [79]

Answer:

Each pencil costs $0.07 and each eraser costs $0.03

Step-by-step explanation:

System of linear equations

It refers to the study of systems when n variables are related in m linear equations, each one is not independent from the others. Solving such systems can be done following very diverse approaches.  

Let p=the price of each pencil while e is the price each eraser

Julio bought 4 pencils and 3 erasers, spending

4p+3e=0.37

David bought 3 pencils and 4 erasers, spending

3p+4e=0.33

The system of equations is written in the form

\left\{\begin{matrix}4p+3e=0.37\\ 3p+4e=0.33\end{matrix}\right

We'll solve it by reduction. Multiplying the first equation by -3 and the second by 4:

\left\{\begin{matrix}-12p-9e=-1.11\\ 12p+16e=1.32\end{matrix}\right.

Adding both equations:

7e=0.21  

e=0.03

Multiplying the first one by -4 and the second by 3

\left\{\begin{matrix}-16p-12e=-1.48\\ 9p+12e=0.99\end{matrix}\right.\end{matrix}\right.

Adding both equations:

-7p=-0.49

p=0.07  

Solution: Each pencil costs $0.07 and each eraser costs $0.03

7 0
3 years ago
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