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djyliett [7]
3 years ago
11

You miss 3 out of 10 questions on a science quiz and 4 out of 15 questions on a math quiz. Which quiz has a higher percent of co

rrect anwsers?
Mathematics
2 answers:
EastWind [94]3 years ago
8 0
3 out of 10 quiz because if you divide 3 by 10 it's 0.3 but if you do 4/15 it's 0.26...
11Alexandr11 [23.1K]3 years ago
4 0
The first one have a higher percen of correct answer because they were only 10 questions and you miss 3 the score will be 7/10
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Which shows two expressions that are equivalent to (-8)(-12)(2)?
Darya [45]
D. is the answer since (-8)(-24)=192 and so does (-16)(-12)
6 0
3 years ago
Read 2 more answers
Let f(x) = x+2/x+6 <br> f^-1(-6) =
GREYUIT [131]

We can explicitly find the inverse. If f^{-1}(x) is the inverse of f(x), then

f\left(f^{-1}(x)\right) = \dfrac{f^{-1}(x)+2}{f^{-1}(x)+6} = x

Solve for the inverse :

\dfrac{f^{-1}(x) + 2}{f^{-1}(x) + 6} = x

\dfrac{f^{-1}(x) + 6 - 4}{f^{-1}(x) + 6} = x

1 - \dfrac4{f^{-1}(x) + 6} = x

1 - x = \dfrac4{f^{-1}(x) + 6}

f^{-1}(x) + 6 = \dfrac4{1-x}

\implies f^{-1}(x) = \dfrac4{1-x} - 6

Then when x = -6, we have

f^{-1}(-6) = \dfrac4{1-(-6)} - 6 = \dfrac47-6 = \boxed{-\dfrac{38}7}

Alternatively, we can first solve for x such that f(x) = -6. Then taking the inverse of both sides, x = f^{-1}(-6). (The difference in this method is that we don't compute the inverse for all x.)

We have

\dfrac{x+2}{x+6} = -6

x + 2 = -6 (x + 6)

x + 2 = -6x - 36

7x = -38

\implies x = \boxed{-\dfrac{38}7}

8 0
3 years ago
Twelve wrestlers compete in a competition. If each wrestler wrestles one match with each other wrestler, what is the total numbe
sp2606 [1]
The answer would be 6.
5 0
3 years ago
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"On the Richter scale, the magnitude R of an earthquake can be measured by the intensity formula
Sergeeva-Olga [200]

Answer:

  B)  The earthquake measuring 4.5 on the Richter scale is about 32 times more intense than an earthquake measuring 3.

Step-by-step explanation:

Let Ra = log(Ia/Io), and Rb = log(Ib/Io). Then for ...

  Ra - Rb = 4.5 -3.0 = 1.5

  log(Ia/Io) -log(Ib/Io) = 1.5 . . . . . . . . . . . substitute the given expressions

  (log(Ia) -log(Io)) -(log(Ib) -log(Io)) = 1.5 . . . expand the logs

  log(Ia) -log(Ib) = 1.5 . . . . simplify

  log(Ia/Ib) = 1.5 . . . . . . . . write as a single log

  Ia/Ib = 10^1.5 ≈ 32 . . . . take the antilog

The ratio of intensities is about 32, corresponding to choice B.

8 0
3 years ago
Which object shown below could we slice parallel to its base/face to create a rectangle cross-section?
Zinaida [17]
I believe the answer would be 2) pyramid with a rectangular base
4 0
3 years ago
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