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irakobra [83]
2 years ago
14

Find the missing value. 8-?=-5 HELPPP!

Mathematics
2 answers:
defon2 years ago
8 0
13. You add the 8 and the 5
lbvjy [14]2 years ago
6 0

Answer:

Step-by-step explanation:

8 - something = -5

so negative something has to be 5 bigger then 8 to have a -5 left at the end

8 - (8+5) = -5

8 - 13 = -5

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Miguel is playing a game in which a box contains four chips with numbers written on them. Two of the chips have the number 1, on
Iteru [2.4K]

Answer:

P(X_i=2) =\dfrac{1}{6}

P(X_i=-1) =\dfrac{5}{6}

Step-by-step explanation:

Given the numbers on the chips = 1, 1, 3 and 5

Miguel chooses two chips.

Condition of winning: Both the chips are same i.e. 1 and 1 are chosen.

Miguel gets $2 on winning and loses $1 on getting different numbers.

To find:

Probability of winning $2 and losing $1 respectively.

Solution:

Here, we are given 4 numbers 1, 1, 3 and 5 out of which 2 numbers are to be chosen.

This is a simple selection problem.

The total number of ways of selecting r numbers from n is given as:

_nC_r = \frac{n!}{r!(n-r)!}

Here, n = 4 and r = 2.

So, total number of ways = _4C_2  = \frac{4!}{2!\times 2!} = 6

Total number of favorable cases in winning = choosing two 1's from two 1's i.e. _2C_2 = \frac{2!}{2! 0! } = 1

Now, let us have a look at the formula of probability of an event E:

P(E) = \dfrac{\text{Number of favorable ways}}{\text{Total number of ways}}

So, the probability of winning.

P(X_i=2) =\dfrac{1}{6}

Total number of favorable cases for -1: (6-1) = 5

So, probability of getting -1:

P(X_i=-1) =\dfrac{5}{6}

Please refer to the attached image for answer table.

7 0
3 years ago
Can someone solve this problem for me? Show me your steps to solve this problem as well.
AveGali [126]
\bf 3^x=81\qquad 
\begin{cases}
81=3\cdot 3\cdot 3\cdot 3\\
\qquad 3^4
\end{cases}\implies 3^x=3^4\implies x=4

if their base is the same, the exponents must also be the same for the equation to be true.
5 0
3 years ago
How many solutions does y=5x+12 and y=5x+18
Mrrafil [7]

Answer:

there is no solution for these linear equations in two variables.

since a1 (y) = a2 (y)

         b1 (5x) = b2 (5x)

  but, c1 (12) not equal to c2 (18)

8 0
3 years ago
Read 2 more answers
What is the area of this triangle? Use the formula A=bh/2 A. 22 yd² B. 16 yd² C. 14 yd² D. 8 yd²
Lorico [155]
A = (1/2) b* h
OR
A = (b*h)/2
A = (8* 2)/2
A = 16/2
A = 8 yd^2
Letter D
3 0
3 years ago
Find K' if the figure is reflected across the x-axis
snow_lady [41]
<h3>Answer:  K ' is at (1, 4)</h3>

Explanation:

Point K is located at (1, -4)

We use the rule that (x,y) \to (x,-y) when reflecting over the x axis.

The x coordinate stays the same, but the y coordinate flips from positive to negative or vice versa.

Therefore, K(1,-4) will move to K ' (1, 4)

5 0
2 years ago
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