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olya-2409 [2.1K]
3 years ago
5

Given the figure below, find the values of x and z.

Mathematics
2 answers:
bogdanovich [222]3 years ago
5 0

Answer:

76

Step-by-step explanation:

you have to plug it in to check

Liula [17]3 years ago
4 0

Answer:

76

Step-by-step explanation:

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Please help me with this problem​
Rom4ik [11]

y=x^2 + x - 2

x + y = 1

Replace y in the second equation:

x + x^2 + x -2 = 1

Simplify:

x^2 + 2x -2 = 1

Subtract 1 from both sides:

x^2 + 2x -3 = 0

Factor:

(x-1) (x+3) = 0

Solve for both x's:

x = 1 and x = -3

Now replace x in the second equation and solve for y using both x values:

1 + y = 1, y = 0

-3 + y = 1, y = 4

Now you have (1,0) and (-3,4) as solutions for (x,y)

XY = x times y:

1 x 0 = 0

-3 x 4 = -12

The answer would be -12

6 0
3 years ago
Noah needs to order some new supplies for the restaurant where he works. The restaurant needs at least 503 knives. There are cur
anastassius [24]

Answer:

10x+391≥503

Step-by-step explanation:

let x = # of sets

If you need at least 503 knives, both the sets of knives and the initial amount we already have (391) must add to have a number of knives greater than or equal to the minimum required amount.

4 0
2 years ago
You observe the heights of two plants for an experiment. Plant A has a height of 8 centimeters and grows 1 centimeter each week.
saveliy_v [14]

Answer:

69

Step-by-step explanation:

8 0
3 years ago
Evaluate expression 2 (d +9)
LenKa [72]

Answer:

2d +18

Step-by-step explanation:

use distributive property:

a(b+c)

= ab+ac

7 0
2 years ago
Read 2 more answers
Factorise fully x^3-x
MA_775_DIABLO [31]

Answer:

x(x+1)(x-1)

Step-by-step explanation:

We see that the two terms share an x, so we can pull that out:

x^3-x=x(x^2-1)

Now notice that we have a difference of squares (x^2-1). Given a difference of squares, a^2-b^2, this can always be factored into (a+b)(a-b). We can use this in this case: x^2-1=(x+1)(x-1).

So, our final factorized form is: x(x+1)(x-1).

Hope this helps!

3 0
3 years ago
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