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Blababa [14]
3 years ago
12

HELP I’m being timed!!

Mathematics
2 answers:
lubasha [3.4K]3 years ago
6 0

Answer:

A 1/4

Step-by-step explanation:

Sunny_sXe [5.5K]3 years ago
6 0

Answer:

A. There is a 1/4 chance.

Step-by-step explanation:

There are 8 outcomes if a coin is flipped 3 times.

Of these, 4 start with tails.

Since 4 is the denominator here, C (3/8) is out.

Also 4 doesn't have 3 as a factor, so B (1/3) is also out.

After the tails flip, two heads follow.

That's one of four of the combinations starting with tails (THH, THT, TTH, TTT, so D is out, leaving A as our answer! (We would need two for A to work)

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SOME HELP HERE PLEASE?!!
ehidna [41]

Step-by-step explanation:

Your answer is 4. Hope you like my answer.

7 0
2 years ago
Read 2 more answers
Select the condition for which it is NOT possible to construct a triangle.
maw [93]

Answer:

A triangle with side lengths 4 cm, 5 cm, and 15 cm

Step-by-step explanation:

In order to form a triangle with given side lengths, sum of any two sides must always be greater than the third side.

4+5= 9\ngtr 15\\

6 0
3 years ago
Calculate the difference scores for the following data from a repeated measures study. Conduct a repeated measures t-test at apl
Delicious77 [7]

Answer:

There is no difference as per statistical evidence.

Step-by-step explanation:

We calculate t statistic from the formula

t =difference in means/Std error of difference

Here n1 = n2

t = (x bar - y bar)/sq rt of s1^2+s2^2

Let treatment I =X = 34 41 38 29

     Treatment II Y = 39 48 35 36

                     X       Y    

Mean          35.50   39.50

Variance     81.00   105.00

H0: x bar = y bar

Ha: x bar not equal to y bar

(Two tailed test at 0.05 significant level)

N1 = 4 and N2 = 4

df=N1+N2-2 = 6

s1^2 = 81/3 =27 and s2^2 = 105/3 = 35

Std error for difference =

t = -1.02

p =0.348834

p>0.05

Since p value >alpha we accept null hypothesis.

Hence there is statistical evidence to show that there is no difference in the mean level of scores.  

6 0
3 years ago
A cell phone plan has a monthly cost that is shown in the table below. What is the correct statement regarding the average rate
BARSIC [14]

Answer:

Second from top...

The average rate of change is $0.07, meaning that for each minute of talk time, the monthly bill increases by $0.07.

Step-by-step explanation:

Pick any two points and calculate the slope which will represent the rate of change:

  (Minutes, Cost)

  (0, 9.95)

  (10, 10.65)

Rate of change:

slope m = (y₂ - y₁) / (x₂ - x₁)

             = (10.65 - 9.95) / (10 - 0)

             = 0.7 / 10

             = 0.07

y is cost

m is rate of change

x is minute(s) use

b is fixed monthly cost regardless if any minutes is used

  y = mx + b

  y = .07x + 9.95

4 0
3 years ago
7x + 3 = 10x - 5.4<br><br> will mark brainliest u do not have to show work
Tanya [424]
X=3x-2.4 because if you substract from one side you have to do it to the other
4 0
3 years ago
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