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hodyreva [135]
3 years ago
15

i need you to explain your answer and show your work for me to have all 5 points! thank you so much and i hope you have a great

day1

Mathematics
1 answer:
viktelen [127]3 years ago
3 0

Answer:

42 cm ^2

Step-by-step explanation:

The area of a triangle is 1/2 B x H ( one half base times height)

The base is 6 cm and the height is 14 cm. So the full equation now is

1/2 (6) (14)

First you multiple 6 times 14 which is 84. Next you just divide it by 2 because 1/2 is half of the number. 84 divided by 2 is 42. So your answer is

42 cm ^2 (centimetres squared)

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382/10=38.2
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4 0
3 years ago
X + y =125<br> 5x + 8y = 775
muminat

Answer:

x=75, y = 50

Step-by-step explanation:

Solve the following system:

{x + y = 125 | (equation 1)

5 x + 8 y = 775 | (equation 2)

Swap equation 1 with equation 2:

{5 x + 8 y = 775 | (equation 1)

x + y = 125 | (equation 2)

Subtract 1/5 × (equation 1) from equation 2:

{5 x + 8 y = 775 | (equation 1)

0 x - (3 y)/5 = -30 | (equation 2)

Multiply equation 2 by -5/3:

{5 x + 8 y = 775 | (equation 1)

0 x+y = 50 | (equation 2)

Subtract 8 × (equation 2) from equation 1:

{5 x+0 y = 375 | (equation 1)

0 x+y = 50 | (equation 2)

Divide equation 1 by 5:

{x+0 y = 75 | (equation 1)

0 x+y = 50 | (equation 2)

Collect results:

Answer:  {x = 75 , y = 50

8 0
3 years ago
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Answer:

45

Step-by-step explanation:

60% of 45 is 27

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