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Bess [88]
2 years ago
5

HELP PLSSS I CANT DO THIS HOMWORK

Mathematics
1 answer:
kvasek [131]2 years ago
8 0

Answer:

B=-6

Step-by-step explanation:

-21+9=-12

-12/2=-6

You can check it.

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Correct answer only plz thank you!
strojnjashka [21]

Answer:

B

Step-by-step explanation:

GI is made up of the segments GH and HI. In other words:

GI=GH+HI

We know that GH is 2 and GI is 7. Substitute:

7=2+HI

Subtract 2 from both sides:

HI=5

So, our answer is B.

And we're done!

3 0
3 years ago
HURRY! I NEED THIS ANSWER FAST!!!!
-BARSIC- [3]
D I did this question a while back
5 0
2 years ago
Jenny earned 92 of a possible 120 points on a test. She lost 4 points for each
Kryger [21]
Jenny missed 7 problems on the 120 point test
7 0
3 years ago
Read 2 more answers
Given f(x) = 4x^4 find f^-1(x) Then state whether f^-1(x) is a function.
sdas [7]

Answer:

  • f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}
  • f^{-1}(x) \quad\text{is not a function}

Step-by-step explanation:

To find the inverse function, solve for y:

x=f(y)\\\\x=4y^4\\\\\dfrac{x}{4}=y^4\\\\\pm\sqrt[4]{\dfrac{x}{4}}=y\\\\f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}

f(x) is an even function, so f(-x) = f(x). Then the inverse relation is double-valued: for any given y, there can be either of two x-values that will give that result.

___

A function is single-valued. That means any given domain value maps to exactly one range value. The test of this is the "vertical line test." If a vertical line intersects the graph in more than one point, then that x-value maps to more than one y-value.

The horizontal line test is similar. It is used to determine whether a function has an inverse function. If a horizontal line intersects the graph in more than one place, the inverse relation is not a function.

__

Since the inverse relation for the given f(x) maps every x to two y-values, it is not a function. You can also tell this by the fact that f(x) is an even function, so does not pass the horizontal line test. When f(x) doesn't pass the horizontal line test, f^-1(x) cannot pass the vertical line test.

_____

The attached graph shows the inverse relation (called f₁(x)). It also shows a vertical line intersecting that graph in more than one place.

5 0
2 years ago
Find the unit rate.<br> 48 cupcakes in 6 boxes=cupcakes per box
natka813 [3]

Answer: 8 cupcakes per box

Step-by-step explanation: "Per box" means in 1 box, so we can rewrite the given statement using fractions as

<em>48 cupcakes/6 boxes</em> = <em>__ cupcakes/1 box</em>.

To find out what goes in the blank, notice that we

have a 1 in the denominator of our second fraction.

So we want to find a fraction that is equivalent

to 48/6 that has a 1 in the denominator.

If we divide the numerator and denominator of 48/6 by 6,

we get the equivalent fraction 8/1 or <em>8 cupcakes/1 box</em>.

So now we have <em>8 cupcakes/1 box = __cupcakes/1 box</em>.

So an 8 must go in the blank which means that the unit rate

for 48 cupcakes in 6 boxes is <em>8 cupcakes per box</em>.

6 0
3 years ago
Read 2 more answers
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