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CaHeK987 [17]
3 years ago
5

Solve this proportion please and thank you.

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
5 0
2a         5
8          10

2a        40
1          10

20a      40

a          2
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X varies directly as y, and x = 153 when y = 9. Find x when y = 13.
goblinko [34]
X = 153 = 17* 9, so when <span>y = 13, x= 21*13= 273

x= 17  18   19  20  21 
y=    9  10   11  12  13</span>
6 0
3 years ago
Please help quick!!!​
hodyreva [135]

Answer:

I wanna say 35 \cm

Step-by-step explanation:

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kykrilka [37]
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7 0
3 years ago
What is the y-intercept, axis of symmetry and vertex of the following function.
Pepsi [2]

Complete the square:

F(x) = -3x² - 6x - 5

F(x) = -3 (x² + 2x) - 5

F(x) = -3 (x² + 2x + 1 - 1) - 5

F(x) = -3 ((x + 1)² - 1) - 5

F(x) = -3 (x + 1)² + 3 - 5

F(x) = -3 (x + 1)² - 2

The y-intercept has x-coordinate equal to 0, so it corresponds to the value of F(0) :

F(0) = -3 (0 + 1)² - 2 = -3 - 2 = -5

The axis of symmetry is the vertical line running through the vertex of this parabola, so we'll come back to this.

The vertex of the parabola is (-1, -2). This represents the maximum value of F(x), which follows from

(x + 1)² ≥ 0   ⇒   -3 (x + 1)² ≤ 0   ⇒   -3 (x + 1)² - 2 ≤ -2

This is to say, every point on the parabola has a y-coordinate no greater than -2.

As mentioned earlier, the axis of symmetry is the vertical line through the vertex, and its equation is determined by the x-coordinate of the vertex. Hence the AoS is the line x = -1.

4 0
2 years ago
Read 2 more answers
Find the measures of
ki77a [65]

3y+15=4y-3

Subtract 3y from both sides

15=y-3

Add 3 to both sides

Y=18

4(18)-3

72-3

69 both angles are 69

8 0
3 years ago
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