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g100num [7]
3 years ago
10

What is the answer for y=-1\2x+3 if x is -4

Mathematics
2 answers:
Liula [17]3 years ago
8 0
The answer is y=5 because -.5x-4=2 and 2 +3=5
mote1985 [20]3 years ago
4 0
You should multiply -4 times 2 and you'd get -8 divide that by 1 it's still-8 add it by 3 you get -5
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Determinați numărul real a, stiind că punctul A (1, 0) aparține graficului funcției f:R cu valori în R, f(x)=x-a...Ajutati-ma va
sweet-ann [11.9K]
A (a,0 ) apartine Gf <=> f(a) =0 f(a) =a-2=0 a-2=0 a=2 => A(2,0) apartine Gf.
5 0
3 years ago
Read 2 more answers
WILL MARK BRAINLIEST <br><br> what is the domain of (f/g) (x)?
tatyana61 [14]

Given that f(x) = \sqrt{7-x} and g(x) = \sqrt{x + 2}, we can say the following:

\Bigg(\dfrac{f}{g}\Bigg)(x) = \dfrac{f (x)}{g(x)} = \dfrac{\sqrt{7 - x}}{\sqrt{x+2}}


Now, remember what happens if we have a negative square root: it becomes an imaginary number. We don't want this, so we want to make sure whatever is under a square root is greater than 0 (given we are talking about real numbers only).


Thus, let's set what is under both square roots to be greater than 0:

\sqrt{7 - x} \Rightarrow 7 - x \geq 0 \Rightarrow x \leq 7

\sqrt{x + 2} \Rightarrow x + 2 \geq 0 \Rightarrow x \geq -2


Since both of the square roots are in the same function, we want to take the union of the domains of the individual square roots to find the domain of the overall function.

x \leq 7 \,\,\cup x \geq -2 = \boxed{-2 \leq x \leq 7}


Now, let's look back at the function entirely, which is:

\Bigg( \dfrac{f}{g} \Bigg)(x) = \dfrac{\sqrt{7 - x}}{\sqrt{x+2}}

Since \sqrt{x + 2} is on the bottom of the fraction, we must say that \sqrt{x + 2} \neq 0, since the denominator can't equal 0. Thus, we must exclude \sqrt{x + 2} = 0 \Rightarrow x + 2 = 0 \Rightarrow x = -2 from the domain.


Thus, our answer is Choice C, or \boxed{ \{ x | -2 < x \leq 7 \}}.


<em>If you are wondering why the choices begin with the x | symbol, it is because this is a way of representing that x lies within a particular set.</em>

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BabaBlast [244]

Answer:

7.5...................

.......

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Please help me, I need help ASAP!
kicyunya [14]
I think 22 is 60 idk though but I think
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Can someone please help me with this? Mhanifa? I will mark brainliest
den301095 [7]

Answer:

Option C 20

GOOD LUCK FOR THE FUTURE! :)

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