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Reptile [31]
2 years ago
12

Determine if the following system of equations has no solutions ......................

Mathematics
1 answer:
topjm [15]2 years ago
8 0

Answer:

No solutions

Step-by-step explanation:

3x+4y=-4

15x+20y=-22

——————————

-5(3x+4y)=-5(-4) multiply 1st equation by -5 so you can eliminate the variables

-15x-20y=20. Modified 1st equation

15x+20y=-22.  2nd equation

0+0=-2. Added two equations together

since 0 does not equal -2, there is no solution.

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The price of a pair of jeans is $25. If there is a 15% discount, what is the sale price of the jeans?
dusya [7]

Answer:

$29.41

Step-by-step explanation:

You know the discount price is 25 and the original is unknown so call it x. The sale is 15% off and that means that the jeans are 85% of what they used to be since 100-15 is 85. Then you plug it into a formula of 25/x = 85/100 then you cross multiply to get 2500=85x and when you solve for x and round you get $29.41

4 0
3 years ago
If (2x - 3) is a factor of mx^2 - 11x - 6, find the other factor.​
Travka [436]

Answer:

(2x - 3) ^2 - 11x - 6

Step-by-step explanation:

6 0
2 years ago
EMERGENCY <br> Triangles ABC and DEF are similar. Find the length of the segments EF and DF
Gala2k [10]

Answer:

EF = 1.5. DF = 2.

Step-by-step explanation:

DE is half of AB so EF is half of BC and DF is half of AC.

7 0
2 years ago
Part A: What is the approximate y-intercept of the line of best fit and what does it represent? (5 points) Part B: Write the equ
11Alexandr11 [23.1K]

Answer:

A. The approximate y intercept appears to be about 1.8 (slightly less than 2). What this tells us is that someone with 0 months of practice could expect to win around 1.8 games.

B. Using slope intercept form and assuming that the y intercept is at (0, 1.8), the equation can be solved for by finding the slope first and then putting the slope and the y intercept into the equation.

Slope (m):

points (0, 1.8) and (1, 3.0)

(Y2-y1)/(x2-x1)=(3.0-1.8)/(1-0)=1.2/1=1.2

Equation:

Y=mx+b

Y=1.2x+1.8

Step-by-step explanation:

5 0
2 years ago
Is the following statement true or false? Every diameter of a circle is a chord.
gavmur [86]
True every diameter of a circle is a chord.
hope it helps
5 0
3 years ago
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