1 because you replace x with 2 so, (2)squared -5x2 + 7 = 4 - 10 + 7 = 1
Answer:
b. {-3, -1, 2}
Step-by-step explanation:
An <u>ordered pair</u> is a pair of elements written as (x, y) where the first element is the input value and the second element is the output value.
The <u>domain</u> is the set of input values (x-values)
The <u>range</u> is the set of output values (y-values)
Therefore, for the given ordered pairs (-1, 0), (2, 4) and (-3, 6)
Domain: {-3, -1, 2}
Range: {0, 4, 6}
Answer:
-115/69
Step-by-step explanation:
12(6x + 10) + x = 9x + 5(1 - x)
72x + 120 + x = 9x + 5 - 5x
73x + 120 = 4x + 5
69x = 5 - 120
69x = -115
x = -115/69
Answer:
y = 10
Step-by-step explanation:
based on the question if y varries directly as x
mathematically
y ∝ x
also, y varries inversly as z can be mathematically expressed as
y ∝ 1/z
combining the two expressions
y ∝ x ∝ 1/z
i. e
y = kx/z..... where k is the constant of proportionality
make k the subject of formulae
yz = kx
Divide both sides by x
k =yz/x
when y=100 , x = 5 z =10
k = 100 × 10/5
k = 200
to find y when x = 3 and z = 60
<h3>from the equation connecting x,y,z</h3>
k =yz/x
200 =60y/3
cross multiply
60y = 200 × 3
60y = 600
divide both sides by 60
y = 10
Answer:
-2x³ - 2y² + z⁴
Step-by-step explanation:
Step 1: Write out expression
x³ - 2y² - 3x³ + z⁴
Step 2: Combine like terms (x³)
-2x³ - 2y² + z⁴
