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Alona [7]
2 years ago
7

Use the diagram below to answer the

Mathematics
1 answer:
Leviafan [203]2 years ago
6 0

Answer:

34

Step-by-step explanation:

Since this an isosceles triangle we can say the length of AB = AC

2x - 1 = x + 7

2x - x = 7 + 1

x = 8

The perimeter is calculated by adding all side lengths

2x - 1 + x + 7 + x - 4 = Area add like terms

4x + 2 = Area replace x with the value we found

4*8+2 = 34 units square

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Plzz help and explain
Mumz [18]
The height is 5 and 1/4 then the base is 2 and 1/2

You can convert these fractions into decimals and them multiply them to get your area.
6 0
3 years ago
Consider the quadratic function f(x) = –2x2 + 4x – 2. Find the y-intercept and the equation of the axis of symmetry.
RoseWind [281]

Answer:

The y-intercept is -2

The equation of the axis of symmetry is x = 1 ⇒ 3rd answer

Step-by-step explanation:

* Lets revise the general form of the quadratic function

- The general form of the quadratic function is f(x) = ax² + bx + c,

 where a, b , c are constant

# a is the coefficient of x²

# b is the coefficient of x

# c is the y-intercept

- The meaning of y-intercept is the graph of the function intersects

 the y-axis at point (0 , c)

- The axis of symmetry of the function is a vertical line

  (parallel to the y-axis) and passing through the vertex of the curve

- We can find the vertex (h , k) of the curve from a and b, where

 h is the x-coordinate of the vertex and k is the y-coordinate of it

# h = -b/a and k = f(h)

- The equation of any vertical line is x = constant

- The axis of symmetry of the quadratic function passing through

  the vertex then its equation is x = h

* Now lets solve the problem

∵ f(x) = -2x² + 4x - 2

∴ a = -2 , b = 4 , c = -2

∵ The y-intercept is c

∴ The y-intercept is -2

∵ h = -b/2a

∴ h = -4/2(-2) = -4/-4 = 1

∴ The equation of the axis of symmetry is x = 1

4 0
2 years ago
Use a normal approximation to find the probability of the indicated number of voters. In this case assume that 150 eligible vote
alexdok [17]
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With the continuity correction, you have

\mathbb P(X
8 0
3 years ago
A plane travels 990 miles to London and back. the trip there was with the wind.it took 10 hours.the trip back was into the wind.
tino4ka555 [31]

Answer:

C.

Step-by-step explanation:

pretty positive! :) hope it helps you

7 0
3 years ago
Read 2 more answers
Calcule (-6 ) + (+4 )​
Ad libitum [116K]

Answer:

-2

Step-by-step explanation:

Just do it

4 0
3 years ago
Read 2 more answers
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