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3 years ago

For what value of x is the value of f(x)=4x-2 equal to 18

Mathematics

2 answers:

tamaranim1 [39]3 years ago

7 0

F(5) = 4*5-2
f(5)= 20-2
f(5) = 18 the value of x is equal to 5 to make the function equal to 18.

mina [271]3 years ago

5 0

F(x) = 4(5) - 2 → f(x) = 20 - 2 → f(x) = 18

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4 years ago

Read 2 more answers

M is inversely proportional to r if m= 9 when r= 4 find m when r=2

bazaltina [42]

m=18 when r = 2.

Step-by-step explanation:

Given,

m∝ $\frac{1}{r}$

So,

m = k× $\frac{1}{r}$ ,--------eq 1, here k is the constant.

To find the value of m when r = 2

At first we need to find the value of k

Solution

Now,

Putting the values of m=9 and r = 4 in eq 1 we get,

9 = $\frac{k}{4}$

or, k = 36

So, eq 1 can be written as m= $\frac{36}{r}$

Now, we put r =2

m = $\frac{36}{2}$

or, m= 18

Hence,

m=18 when r = 2.

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3 years ago