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3 years ago

A right-angled triangle has one side of length 1.5 cm. Its hypotenuse is 6 cm. How long is its other side?

Mathematics

1 answer:

motikmotik3 years ago

6 0

Answer:

about 5.8cm

Step-by-step explanation:

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Combine the following fractions by addition or subtraction as directed.

Marina86 [1]

Answer: $\frac{6}{y^2-xy}-\frac{6}{x^2-xy}=\frac{6(x+y)}{xy(y-x)}$

Explanation:

Combining the fractions, we have:

$\begin{gathered} \frac{6(x^2-xy)-6(y^2-xy)}{(x^2-xy)(y^2-xy)} \\ \\ =\frac{6x^2-6xy-6y^2+6xy}{(x^2-xy)(y^2-xy)} \\ \\ =\frac{6x^2-6y^2}{x(x-y).y(y-x)} \\ \\ =\frac{6(x-y)(x+y)}{-xy(x-y)^2} \\ \\ =\frac{-6(x+y)}{xy(x-y)} \\ \\ =\frac{6(x+y)}{xy(y-x)} \end{gathered}$

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2 years ago

Need help on numbers 3, 4, and 5 ill mark brainliest if they are right

erastovalidia [21]

Answer:

Step-by-step explanation:

3. V triangular prism =B*h=18*12*35=7560 cubic feet

4. V cone= pi*r^2*h=pi*8^2*9=3.14*64*9=1808.6 cubic feet

5. V=B*h/3=15*9*13/3=5*9*13=585 cubic milimeters

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3 years ago

Prove that 3(x+1)(x+7)-(2x+5)² is never positive

scZoUnD [109]

Step-by-step explanation:

3(x + 1)(x + 7) − (2x + 5)²

3(x² + 8x + 7) − (4x² + 20x + 25)

3x² + 24x + 21 − 4x² − 20x − 25

-x² + 4x − 4

-(x² − 4x + 4)

-(x − 2)²

A squared number is never negative (provided x is a real number), so -(x − 2)² is never positive.

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3 years ago

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What is the answer of b-6=-14

Nostrana [21]

Answer:

b= -8

Step-by-step explanation:

b-6=-14

add 6 to -14 but its a negative so, you subtract -14 to 6.

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b= -8

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3 years ago

A movie theater has 1000 seats. There are 424 adults and 339 children sitting in seats. How many of the seats are empty

aev [14]

Answer:

237 seats are empty

Step-by-step explanation:

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