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sashaice [31]
3 years ago
9

What does -20x-40 equal

Mathematics
1 answer:
kicyunya [14]3 years ago
3 0
-20x-40 = 800
Hope it helps
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Solve for X and solve for Y?
Llana [10]

Answer:

x=3\sqrt 5\\

y = \sqrt {126}

Step-by-step explanation:

By geometric mean property:

x =  \sqrt{9 \times 5}  =  \sqrt{45} = 3 \sqrt{5}   \\  \\ by \: pythagoras \: theorem \\  \\  {y}^{2}  =  {9}^{2}  +  {x}^{2}  \\  \\  {y}^{2}  =  {9}^{2}  +  {(3 \sqrt{5}) }^{2}  \\  \\  {y}^{2}  = 81 + 45 \\  \\  {y}^{2}  = 126 \\  \\ y =  \sqrt{126}

7 0
3 years ago
Which value from the set {2, 3, 6, 7} makes 3x + 5 = 11 true?
monitta

Answer:

2

Step-by-step explanation:

3 x 2 = 6 + 5 = 11

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How do you write 280% as a fraction or mixed numbers?
Taya2010 [7]

Step-by-step explanation:

Fraction = 280% / 100%

= 280/100 = 14/5 or 2 4/5.

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3 years ago
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When two dice are rolled, what is the probability the two numbers will have a sum of 5?
ira [324]

When two dice are rolled, then possible outcomes are

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

Total possible outcomes = 36

In that, we count the ordered pairs that give us sum 5

(1,4) (2,3) (3,2) and (4,1) = 4 outcomes

Probability = (number of times the event occurs)/ (total number of outcomes)

P( sum of 5) = \frac{4}{36} = \frac{1}{9}

7 0
3 years ago
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