Let h(x) = -4x + 2. h(5) =

Mathematics

2 answers:

Novay_Z [31]3 years ago

6 0

Answer:

h(5) =-18

Step-by-step explanation:

h(x) = -4x + 2

Let x=5

h(5) = -4*5 +2

= -20+2

= -18

borishaifa [10]3 years ago

4 0

Answer:

h(5)=-18

Step-by-step explanation:

h(5) means you'd be substituting the x for 5, so -4(5) + 2 is the same as -20+2 which is -18.

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Solve the equation 7/z-1 = 9/z+4

algol [13]

Answer:

z is equal to 18.5

Step-by-step explanation:

When an equation is in the format a/b = c/d, the quickest way to simplify it is to cross multiply. Each side is multiplied by the other sides denominator, eliminating the division:

$\frac{7}{z-1} = \frac{9}{z + 4}\\7(z + 4) = 9(z - 1)\\7z + 28 = 9z - 9\\7z - 9z = -9 - 28\\-2z = -37\\z = 37/2\\z = 18.5$