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kykrilka [37]
3 years ago
8

2x - 5y = 16 x - 2y = 5 elimination?

Mathematics
1 answer:
harina [27]3 years ago
6 0

Answer:

Y = 6

X = 24

Step-by-step explanation:

2x -5y = 16

(x -2y =5)*2

_______________

2x -5y = 16

2x - 4y = 10

_______________

(2x -5y = 16) - (2x - 4y = 10)

_______________

0x -y = 6

_______________

y =6

_______________

Replacing in equation 1:

2x - 5(6) = 16

so, 2x = 16 + 30

2x = 48

x = 24

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5 0
3 years ago
Find the x-intercepts of the parabola with
12345 [234]

Answer:

x-intercepts are (0, 0) and (-6, 0)

Step-by-step explanation:

equation of a parabola in vertex form:  y = a(x - h)² + k

where (h, k) is the vertex

Substituting the given vertex (-3, -18) into the equation:

y = a(x + 3)² - 18

If the y-intercept is (0, 0) then substitute x=0 and y=0 into the equation and solve for a:

0 = a(0 + 3)² - 18

⇒ 0 = a(3)² - 18

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⇒ 9a = 18

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Therefore, y = 2(x + 3)² - 18

To find the x-intercepts, set the equation to 0 and solve for x:

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Add 18 to both sides:     2(x + 3)² = 18

Divide both sides by 2:    (x + 3)² = 9

Square root both sides:      x + 3 = ±3

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so x = 3 - 3 = 0  

and  x = -3 - 3 = -6

So x-intercepts are (0, 0) and (-6, 0)

8 0
2 years ago
Read 2 more answers
Chips suppose a computer chip manufacturer rejects 2% of the chips produced because they fail presale testing.
Artyom0805 [142]
(a) P( fifth one is bad)  = P( first 4 are OK) * P(5th is bad)

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4 0
3 years ago
A triangle has an area of 55 cm² and a base of 10 cm². What is the height? please help!!!!!!!!!!
AlekseyPX

Answer:

11cm2

Step-by-step explanation:

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3 0
3 years ago
Which expression is equivalent to the expression shown (5^3) ^9 divided 5^12
weqwewe [10]

Answer:5 exponent of 15

Step-by-step explanation:trust

5 0
3 years ago
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