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3 years ago

8

Help me, please. Confused again.

2 answers:

stellarik [79]3 years ago

5 0

Answer:

the first one

Step-by-step explanation:

vichka [17]3 years ago

4 0

Answer:

b

Step-by-step explanation:

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What is -5 to the 4 power in expanded form

Kruka [31]

-5 to the 4th power in expanded form would be -5 x -5 x -5 x -5. This is equal to positive 625.

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3 years ago

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Which of the following expressions shows how to rewrite 4 - 5 using the addtive inverse and displays the expression correctly on

Evgesh-ka [11]

Answer: 4 - 5 = 4 + (-5) = -1

Step-by-step explanation: You have to make the 5 into a negative number using parenthesis and do the math.

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The diameter of a round rug is 42 inches. What is the approximate area of the rug?

aksik [14]

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Step-by-step explanation:

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3 years ago

What type of conic section is given by the equation 4x^2+9y^2=36? What are its domain and range?

Damm [24]

$4x^2+9y^2=36\\
\\
\frac{4x^2}{36}+\frac{9y^2}{36}=\frac{36}{36}\\
\\
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This is a equation of a ellipse (0,0) centered

Domais: {x∈R/-3≤x≤3}
Range:{y∈R/-2≤y≤2}

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3 years ago

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A boat is 122 meters from the base of a lighthouse. The lighthouse is 34 meters tall. The angle formed with the lighthouse and s

mojhsa [17]

Answer:

about 16°

Step-by-step explanation:

Make sure your calculator is in degree mode.

Drawing the right triangle, we see that the shorter leg is 34 meters, and the longer leg is 122 meters. So the angle of elevation is:

$\tan( \alpha ) = \frac{34}{122}$

$\alpha = { \tan }^{ - 1} \frac{34}{122} = 15.57$

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2 years ago