3 years ago

I need help!!! Please help me!!

Mathematics

1 answer:

RUDIKE [14]3 years ago

4 0

I think the second one

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9/10 = z/8 round to the nearest tenth

jeka57 [31]

9/10 = z/8

cross multiply

9/10(10)(8) = z/8(8)(10)

9(8) = z(10)

72 = 10z

Isolate the z, divide 10 from both sides

72/10 = 10z/10

z = 72/10

z = 7.2

7.2, or D) is your answer

hope this helps

4 0

3 years ago

What is the rule? how many tiles in figure 0? Can you continue the table?

Talja [164]

The rule is y = 2× + 5.

4 0

4 years ago

Let f(x)=x^2+3 and g(x)= x+2/x . Find(fog)(2).

Bingel [31]

$\bf \begin{cases} f(x)=&x^2+3\\\\ g(x)=&\cfrac{x+2}{x}\\\\ (f\circ g)(x)=&f(~~g(x)~~) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ g(2)=\cfrac{(2)+2}{(2)}\implies g(2)=\cfrac{4}{2}\implies g(2)=\boxed{2} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{x=2}{f(~~g(2)~~)}=\left( \boxed{2} \right)^2+3\implies f(~~g(2)~~)=4+3\implies \stackrel{(f\circ g)(2)}{f(~~g(2)~~)}=7$