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lidiya [134]
2 years ago
15

You scored 85% on your math quiz. The quiz was out of 50 points. How many points did you get?

Mathematics
1 answer:
malfutka [58]2 years ago
4 0

Answer:

43

Step-by-step explanation:

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If x^2 = 49, then x^-2 =
Natalija [7]

Answer:

0.001665973

Step-by-step explanation:

4 0
3 years ago
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Researchers studying two populations of wolves conducted a two-sample tt-test for the difference in means to investigate whether
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A. Assuming that the mean weights of wolves in the populations are equal, the probability of obtaining a test statistic that is greater than 2.771 or less than −2.771 is 0.01.

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3 years ago
if f is a differentiable function and f(0)=-1 and f(4)-3 then which of the following must be true there exists a c in [0,4] wher
iragen [17]

Answer:

True, see proof below.

Step-by-step explanation:

Remember two theorems about continuity:

  1. If f is differentiable at the point p, then f is continuous at p. This also applies to intervals instead of points.
  2. (Bolzano) If f is continuous in an interval [a,b] and there exists x,y∈[a,b] such that f(x)<0<f(y), then there exists some c∈[a,b] such that f(c)=0.

If f is differentiable in [0,4], then f is continuous in [0,4] (by 1). Now, f(0)=-1<0 and f(4)=3>0. Thus, we have the inequality f(0)<0<f(4). By Bolzano's theorem, there exists some c∈[0,4] such that f(c)=0.

7 0
3 years ago
The side of a square is 2.5 cm . Find its perimeter and area
nika2105 [10]

Answer:

Perimeter: 2.5+2.5+2.5+2.5=10.00

Area: 2.5x4=10

Step-by-step explanation:

6 0
2 years ago
You need to make 5 grilled cheese sandwiches. You have a grill that is large enough to toast 2 sandwiches at a time. The sandwic
n200080 [17]
Each sandwich is toasted for 2 minutes and it takes 3 seconds to flip it.
The first two sandwiches will be toasted in 2 minutes (toasting) and 6 seconds (flipping).
The two will then be switched which will take 10 seconds.
The next two will again take 2 minutes and 6 seconds.
The final sandwich will take 5 seconds to be placed.
The final sandwich will also take 2 minutes to toast and 3 seconds to flip.
Total time:
2 + 2 +2 = 6 minutes
6 + 10 + 6 + 3 = 25 seconds
Total time is 6 minutes and 25 seconds.
8 0
2 years ago
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