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Mathematics

2 answers:

grin007 [14]3 years ago

5 0

Answer:

A. 3

Step-by-step explanation:

Fist, we need to figure out how many students said "dogs" and how many said "cats".

30% of 40 is...

40 x .30 = 12.

12 people said dogs.

22.5% of 40 is...

40 x .225 = 9

9 people said cats.

If 12 people said dogs, and 9 people said cats, then 3 more people said dogs than cats.

dlinn [17]3 years ago

5 0

Answer: the answer is 3

Step-by-step explanation:

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A carpenter is making tables (x) and chairs (y). Each table takes 5 hours to make and is sold for $100 and each chair takes 3 ho

sdas [7]

X = tables and y = chairs

5x + 3y < = 40
100x + 30y > 500

well...8 tables and 0 chairs....he will be at 40 hrs and make $ 800....so I believe ur answer is A

8 0

4 years ago

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Find the distance between (2,3) and (-4,9). If you get a radical (square

9966 [12]

Answer:

Length is 6√2 units or 8.49 units

Step-by-step explanation:

Length formular:

$length = \sqrt{ {(x _{2} - x_{1}) }^{2} + {(y_{2} - y_{1})}^{2} }$

x1 is 2

x2 is -4

y1 is 3

y2 is 9

$length = \sqrt{ {( - 4 - 2)}^{2} + {(9 - 3)}^{2} } \\ \\ = \sqrt{ {( - 6)}^{2} + {6}^{2} } \\ \\ = \sqrt{36 + 36} \\ = \sqrt{2 \times 36} \\ = \sqrt{2} \times \sqrt{36} \\ { \boxed{ \boxed{= 6 \sqrt{2} }}} \\ = 8.49 \: units$