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Elina [12.6K]
2 years ago
13

Math pls help it says there is a cone but there isn't.​

Mathematics
2 answers:
Snezhnost [94]2 years ago
7 0

Answer:

SA = π3^2 + π3(7.5)

Step-by-step explanation: r is radius and L

is r*l/2

so 3*5/2=15/2=7.5

seriously look at a problem more carefully and memorise your formulas!

Oksanka [162]2 years ago
6 0

Answer:

pi*r^2+pi^r^l

Step-by-step explanation:

ik you already got it in the comments but im putting it here for other people so it is quick to get

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3 years ago
PQ=RQ a=? <br> Please need help!!
Svetllana [295]
A=100°
as 180-140= 40 , 40 x 2 = 80 & 180-80 = 100° = a
5 0
3 years ago
Determine the intercepts of the line. y = 5 x − 1 3 y=5x−13
sweet-ann [11.9K]
Y-intercept = -13
x-intercept = 2.6 or 2 3/5
-13 is the y-intercept. In the equation, y=mx+b, b is the y-intercept. Looking at the equation, y=5x-13, we can see that -13 is in the place of b, therefore -13 is the y-intercept.
() is the x-intercept. To find the x-intercept, you need to replace values into the equation. Since the coordinates for the x-intercept consist of y being 0, you must replace y in the equation. with 0.
0=5x-13
Get rid of the -13 by adding it onto both sides. -13 is negative and the opposite of a negative is positive, thus making you add to get rid of -13.
0=5x-13
+13 +13
13=5x
Now you divide 5 from both sides to get rid of 5. The opposite of multiplication is division, so you must divide the 5 from 5x to isolate the x.
13/5=5x/5
2.6 or 2 3/5=x
Therefore the coordinates (2.6,0) represent the x-intercept, or just 2.6.

I hope this helped.
6 0
3 years ago
Write an equation for a parabola in which the set of all points in the plane are equidistant from the focus and line F(-6,0); x=
Bogdan [553]

Step-by-step explanation:

Since we have a vertical directrix, the equation of the parabola is

(y - k) {}^{2}  = 4p(x - h)

Where p is the distance from the vertex to the directrix.

or the distance from the vertex to the focus.

Since we have a sideways parabola, let use the point for the directrix is (-6,0). So let find the midpoint of (-6,0) and (6,0). That would be our vertex.

\frac{ - 6 + 6)}{2}  = 0

\frac{0 + 0}{2}  = 0

So our vertex is (0,0).

So our equation become

{y}^{2}  = 4px

The distance from the focus and directrix is 6.

So p=6.

{y}^{2}  = 24x

So p is 6.

Since p is 6,

\frac{ {y}^{2} }{24}  = x

3 0
2 years ago
Find the area of the triangle
Cerrena [4.2K]

Answer:

Part 1)  P=204\ yd

Part 2) A=1,325\ yd^2

Step-by-step explanation:

Part 1)

we know that

The perimeter of triangle is equal to the sum of its length sides

so

P=54+97+53=204\ yd

Part 2)

we know that

The area of triangle is given by the formula

A=\frac{1}{2}(b)(h)

we have

b=53\ yd\\h=50\ yd

substitute

A=\frac{1}{2}(53)(50)=1,325\ yd^2

7 0
3 years ago
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