3 years ago

14

Mathematics

1 answer:

Minchanka [31]3 years ago

6 0

Answer:

B. y = - $\frac{1}{5}$ x - 4

Step-by-step explanation:

The line has a y-intercept of -4, and if one finds the slope through the equation of $\frac{y1-y2}{x1-x2}$ , the answer would be - $\frac{1}{5}$ .

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Evaluate exactly in radians: arctan(1/sqrt(3)).

Alexeev081 [22]

$\displaystyle \\ 
 \frac{1}{ \sqrt{3} } = \frac{\sqrt{3}}{ \sqrt{3} \times \sqrt{3}} = \frac{\sqrt{3}}{ 3} \\ \\ 
\arctan\left(\frac{\sqrt{3}}{ 3} \right) = \arctan(\tan 30^o) = \boxed{30^o}$

7 0

3 years ago

3(5y - 42) for y = 4

liberstina [14]

Answer:

-66

Step-by-step explanation:

y = 4

3(5y - 42)

3(5(4) - 42)

3(20 - 42)

3(-22) = -66

6 0

3 years ago

Read 2 more answers

the area of a circle is 96 square inches. What is the area of a circlewhose diameter is 1.5 times the diameter of the circle?

mars1129 [50]

The area of a circle A equals either:
πr² or πd²/4

96 = πd²/4 => d = 11 inches

The diameter of the second circle equals :
11*1.5 = 16.5 inches

The area equals: π(16.5)²/4 = 214 square inches

Good luck

5 0

4 years ago

Which amount is a reasonable tip for an airport skycap? $2 total $2 per bag $5 per bag $10 per bag

Allushta [10]

Hey there!

Every bag is $2

Hope I helped!!

Let me know if you need anything else!

~ Zoe

3 0

3 years ago

Need help with this!!!!!!!!

zzz [600]

The linear combination method is the same as the elimination method. Let's multiply the second equation by -2 so the x terms cancel each other out. When we do that we get a system of $2x-3y=13$ and $-2x-4y=8$ . The x-terms cancel each other out giving us $-7y=21$ and y = -3. Now sub -3 into one of the equations to solve for x. x+2(-3)=-4, and x - 6 = -4. x = 2. So the solution for our system is (2, -3)

4 0

3 years ago