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astraxan [27]
3 years ago
13

Which equation results from adding the equations in this system? 11 x minus 3 y = negative 17. Negative 4 x + 3 y = negative 18.

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
4 0

Answer:

7x = - 35

Step-by-step explanation:

Equation 1 :

11x - 3y = - 17

Equation 2 :

-4x + 3y = - 18

Equation 1 + 2

11x - 3y = - 17

-4x + 3y = - 18

_____________

11x - 4x - 3y + 3y = - 17 + (-18)

7x = - 35

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The value of a professional basketball player's autograph rose 20% in the last year. It is now worth $336.00. What was it worth
Ghella [55]

Answer:

$268.80

Step-by-step explanation:

You multiply 336 by 0.2 as it give what the 20% is, which is 67.2. You then subtract 336 by 67.2 and get the value from last year.

6 0
4 years ago
Need help due at midnight!!
likoan [24]
Your answer is 5.

On the first triangle ABC, the answers are all divided by 7, to the triangle DEF. So 35/7 is 5. Hope this helps.
3 0
3 years ago
[3]<br>(b)<br>Calculate the values of c for which 2x2 – 3x + c&gt;-2 for all values of x.​
hoa [83]

Answer:

  c > -7/8

Step-by-step explanation:

Add 2 for an inequality that compares to zero:

  2x^2 -3x +(c+2) > 0

This will be true when the discriminant is negative. For the quadratic ...

  ax^2 +bx +c

the discriminant is ...

  b^ -4ac

We want this to be negative:

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  9 -8(c +2) < 0

  9 -8c -16 < 0

  -7 < 8c

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The given inequality will be true for all values of c greater than -7/8.

3 0
3 years ago
Draw a conclusion as to why zero students had a 54-inch shoelace
Sholpan [36]
The answer is: 54 inches would be too long for a shoelace

If I managed to help you, please make sure to mark my answer as the "Brainliest" answer. Thanks! :)
6 0
3 years ago
Read 2 more answers
Line AB has endpoints A(-4,5) and B(3,5). What is the x-coordinate of a point C such that B is the midpoint of line AC
Ipatiy [6.2K]
Easy peasy

the midpoint between (x_1,y_1) and (x_2,y_2) is
(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})
just average them

so given that (3,5) is the midpoint of (-4,5) and (x,y)
(\frac{-4+x}{2},\frac{5+y}{2})=(3,5)
so by logic
\frac{-4+x}{2}=3 and \frac{5+y}{2}=5
times both sides by 2 for everybody
-4+x=6 and 5+y=10
add 4 to both sides for left one and minus 5 from both sides for right
x=10 and y=5

the coordinate of point C is (10,5)
the x coordinate is 10
7 0
4 years ago
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