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Bad White [126]
3 years ago
10

Someone can help me ?

Mathematics
1 answer:
sergiy2304 [10]3 years ago
5 0

Answer:

\frac{39}{2}  \div 13 \\  \frac{39}{2}  \times  \frac{1}{13}  \\  \frac{3}{2}

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Find the measure of the angle that is 15x.
Naddika [18.5K]
15x would be the vertical angle of 16x -8 and since vertical angles are equal, then 15x = 16x -8.

15x = 16x -8
x = 8 and so the angle 15x = 15 * 8
which equals 120 degrees.

8 0
4 years ago
Which term describes the point where the three altitudes of a triangle intersect?
inn [45]
The answer to the question is ORTHOCENTER. The altitude is the line that connects the vertex of a triangle to the opposite side making a 90 degrees with it. Thus, the use of the prefix ortho- for the points where the three altitudes meet. 
4 0
3 years ago
Read 2 more answers
If xy + y² = 6, then the value of dy/dx at x= -1 is<br>​
mylen [45]

Hi there!

\large\boxed{\text{At (-1, -2), }\frac{dy}{dx} = -\frac{2}{5}}}

\large\boxed{\text{At (-1, 3), }\frac{dy}{dx} = -\frac{3}{5}}}

We can calculate dy/dx using implicit differentiation:

xy + y² = 6

Differentiate both sides. Remember to use the Product Rule for the "xy" term:

(1)y + x(dy/dx)  + 2y(dy/dx) = 0

Move y to the opposite side:

x(dy/dx) + 2y(dy/dx) = -y

Factor out dy/dx:

dy/dx(x + 2y) = -y

Divide both sides by x + 2y:

dy/dx = -y/x + 2y

We need both x and y to find dy/dx, so plug in the given value of x into the original equation:

-1(y) + y² = 6

-y + y² = 6

y² - y - 6 = 0

(y - 3)(y + 2) = 0

Thus, y = -2 and 3.

We can calculate dy/dx at each point:

At y = -2: dy/dx = -(-2) / -1+ 2(-2) = -2/5.

At y = 3: dy/dx = -(3) / -1 + 2(3) = -3/5.

5 0
3 years ago
In Example 5, Norfolk recorded a new record low last night. The new record low is greater than the record low in Lynchburg. What
lakkis [162]

Answer:

Here is something you can study.

Step-by-step explanation:

7 0
3 years ago
The ratio of tulips to violets is 5:6 and the total number of flowers is 99 if 10 tulips are added how many violets must be adde
vivado [14]

Answer:

  12

Step-by-step explanation:

The given ratio is ...

  tulips : violets = 5 : 6 = 10 : 12 . . . . . . . .multiply by 2

This tells us that maintaining the ratio will require 12 violets to be added for an addition of 10 tulips.

8 0
3 years ago
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