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Svetach [21]
2 years ago
9

Multiply the sum of -13/8 and 5/12 by their difference.​

Mathematics
1 answer:
REY [17]2 years ago
6 0

Answer:

1421/576

Step-by-step explanation:

Sum = - 13/8 + 5/12 = - 39/24 + 10/24 = - 29/24

Difference = - 13/8 - 5/12 = - 39/24 - 10/24 = - 49/24

Sum * Difference = (-29/24)*(-49/24) = 1421/576

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Help me please and thank you
aleksklad [387]
Answer:

b/-4+8=5
Multiply each side by 4
-b+32=20
Move the constant to the right
-b=20-32
-b=-12
Change the signs
b=12
3 0
3 years ago
use the elimination method to solve the system of equations. choose the correct ordered pairs -x + y=-3 and 3x + 2y=9
Agata [3.3K]
-x+y=-3, 3x+2y=9

1. multiply the first row by the second
-2x+2y=-6, 3x+2y=9

2. subtract the second row from the first row
-5x=-15

3. sole for x in the above equation
x=-15/-5
x=15/5
x=3

4. substitue x=3 into -2x+2y=-6
-2*3+2y=-6


5. solve for y in the above equation
-6+2y=-6
2y-6=-6
2y=0
y=0

6 therefore,
x=3 and y=0


Have a nice day :D
3 0
3 years ago
Do toy have a triangle with a 3 angles:60 degrees, 60 degrees, 63 degrees
Karo-lina-s [1.5K]

Answer:

no.

Step-by-step explanation:

a triangle can only have 180° in total but

60+60+63

=183°

Therefore a triangle can not have these three angles together.

8 0
3 years ago
And this one <br> the equation up top is f(x)=-2x^2+3
VMariaS [17]

Answer:

5

Step-by-step explanation:

2^2= 4

-4*2=-8

-8+3=5

3 0
3 years ago
Let X represent the SAT score of an entering freshman at University X. The random variable X is shown to have a N(1200, 90) dist
Lelechka [254]
The correct answer to this question is 0.1456. This is <span>the probability that X bar will be greater than Y bar. </span>Probability is the measure of how likely an event is. The formula is the ratio of the number of favorable outcomes to the total number of possible outcomes. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help. 
4 0
4 years ago
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