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tamaranim1 [39]
2 years ago
6

Mike is c years old, he is half as old as Steve. How old was Steve two years ago?

Mathematics
1 answer:
vredina [299]2 years ago
5 0

Answer:

2(c-1)

Step-by-step explanation:

MIke is c

Steve is 2c

Steve was 2c -2  two years ago

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A square has the side measurement of s=6^3/2 , Use the formula A = s^2 , find the area of the square
irakobra [83]
s=6^{ \frac{3}{2} } \\ \\ A=s^2={(6^{ \frac{3}{2} } )}^2=6^{ 3}= 216 \ \ units^2
7 0
2 years ago
5(x+3)-5<br> simplify this.
nignag [31]

Answer:

5x+10

Step-by-step explanation:

Distribute:

=(5)(x)+(5)(3)+−5

=5x+15+−5

Combine Like Terms:

=5x+15+−5

=(5x)+(15+−5)

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8 0
3 years ago
A psychological experiment was conducted to investigate the length of time (time delay) between the administration of a stimulus
aleksklad [387]

Answer:

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

The significance level for this test is 0.05.

Step-by-step explanation:

In this case, we want to prove if there is significant evidence that the mean differs from 1.6 seconds. That is the same as having evidence to reject the the hypothesis H_0:\mu= 1.6 (the null hypothesis always have the equal sign).

We have to test the null hypothesis

H_0:\mu= 1.6

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t=\frac{M-\mu}{s/\sqrt{n}} =\frac{2.2-1.6}{0.57/\sqrt{36}} =\frac{0.6}{0.063}= 9.47

If we look up in a t-table for t=9.47 and df=(36-1)=35, we get this value appears with a probability of zero. A large number like that is very unlikely to happen.

The P-value of this sample is 0 and is less than the significance level (0.05), so the effect is significant and the null hypothesis is rejected.

As there is significant evidence to reject H_0: \mu= 1.6, we can say that there is significant evidence to claim that the mean time delay for the hypothetical population of all persons who may be subjected to the stimulus differs from 1.6 seconds.

6 0
2 years ago
Name a possible value for w that is a solution to w &gt; 30, but is not a solution to w &lt; 50. Thank you in advance for the he
MrMuchimi

Answer:

i dont know

Step-by-step explanation:E

4 0
2 years ago
There are 54 students in a class. The Venn diagram below shows how many students play a sport, take a foreign language, do both,
andrew11 [14]

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Takes language            |  21  |  17  |

                                      -----------------

Doesn't take language |  12  |  4 |

4 0
2 years ago
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