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REY [17]
3 years ago
13

Plspls pls help

Mathematics
1 answer:
cupoosta [38]3 years ago
5 0

Answer:

x=-2, y=-3

Step-by-step explanation:

This is an easy one. You can eliminate the y-terms by adding the equations together. Then solve for x.

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Okay I am trying to help my son. Can someone please help me and explain adding mixed numbers 4 3/10+6 9/10
polet [3.4K]

So when you add mixed numbers, you must convert it into fractions. The four would become part of the fraction and be 43/10 and the six becomes part of the fraction which is 69/10. You can find this by multiplying 4 by the denominator and then adding it to the numerator (4 Times 10 = 40 + 3 = 43/10) and same for the other one. The answer is 112/10, simplify to 11 1/5.

4 0
3 years ago
Read 2 more answers
From families with four children a family is chosen at random. Let X be the number of boys in the family. Calculate and sketch t
alisha [4.7K]

Solution :

Given :

X = the number of boys in a family of four children

Families having four children are chosen randomly.

The gender distribution in the four child family are equally probable.

Thus,

 X                P(X)                                          CDF

0             ^4C_0 (1/2)^{4}        = 1/16                     \frac{1}{16}

1               ^4C_1 (1/2)^{4}       = 1/4                       \frac{5}{16}

2                ^4C_2 (1/2)^{4}      = 3/8                      \frac{11}{16}

3                ^4C_3 (1/2)^{4}      = 1/4                       \frac{15}{16}

4                  ^4C_4 (1/2)^{4}    = 1/16                      1

4 0
3 years ago
Which of the following is equivalent to 60 1/2
earnstyle [38]

Answer:

\sqrt{60}

Step-by-step explanation:

The exponent of positive 1/2 is the square root  of 60

60 ^1/2 = \sqrt{60}

5 0
3 years ago
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A cylinder has a radius of 5cm and a height of 9cm find its total area
Sauron [17]

Answer: 706.5

Step-by-step explanation:

First you have to square the radius. So for this question you multiply 5x5. That makes 25. Then you multiply that with pi ( 3.14 ) and that makes 78.50. Next you multiply it by 9, that makes 706.5.

7 0
3 years ago
A board 6 ft 11 in long is cut from a board 10 ft 5 in long. Find the length of the remaining
gulaghasi [49]

Answer:

3' 6" left

Step-by-step explanation:

6' 11" = 83"

10' 5" = 125"

125 - 83 = 42"

42" = 3' 6"

4 0
2 years ago
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