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Thepotemich [5.8K]
3 years ago
10

A box has 5 marbles numbered from 1 to 5. Determine the following theoretical probabilities of the totals of two marbles ( a mar

ble is taken from the box, the number noted, put back in the box, and then a second marble taken from the box and the number noted)
a) P(a total of 4)
b) P(a total of 5)
c) P(an odd total)
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0

Answer:

4

Step-by-step explanation:

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Factor the expression. 40z – 20
erik [133]
40z - 20 
   
     GCF=20
 

20 ( \dfrac{40z}{20} -  \dfrac{20}{20}) 

20(2z-1)
7 0
4 years ago
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What are the x– and y–intercepts of the graph of y = 2x^2 – 8x – 10?
Nadya [2.5K]
<u>x-intercepts are found by setting y=0</u>
y=2x^2-8x-10\rightarrow0=2x^2-8x-10
<em>factor out a 2</em> 0=2(x^2-4x-5)\rightarrow0=x^2-4x-5
<em />0=(x-5)(x+1) <em>roots should be </em>x=-1,5
therefore, x-intercepts are (-1,0) and (5,0)
<u>
</u><u>y-intercepts are found by setting x=0</u>
y=2x^2-8x-10\rightarrow y=2(0)^2-8(0)-10
\rightarrow y=0-0-10=-10
therefore, y-intercept is (0,-10)
4 0
3 years ago
If anyone’s good with geometry, help me out please. I would really appreciate it.
lakkis [162]

Answer: X=2, PR=40

Step-by-step explanation:

given that the two triangles are equal/congruent

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

solve for x

10x+5=25

10x=20

x=2

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

solve for y

33=7y-2

35=7y

y=5

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

solve for PR

PR=8y

PR=8(5)

PR=40

Hope this helps!! :)

5 0
3 years ago
Help please!!
Reil [10]
I hope this helps you




4r=p-3t



r=p-3t/4
3 0
3 years ago
BRAINLIEST ASAP! PLEASE. HELP ME :) I need help with part 2 of the question.
tino4ka555 [31]

Part 2:

-4a + 2 + 11a = 5a + 3 + 2a

~Combine like terms

7a + 2 = 7a + 3

~Subtract 2 to both sides

7a = 7a - 1

~Subtract 7a to both sides

0 = 1

Therefore, there are no solutions.

Best of Luck!

3 0
3 years ago
Read 2 more answers
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