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4 years ago

How do i do this question? someone help

Mathematics

1 answer:

lesya [120]4 years ago

8 0

There are 360 degrees in the rhombus which means the equilateral triangles has 180 degrees (because it is half the rhombus and also it is the angle sum of a triangle). It is equilateral meaning all sides and angles are the same so they all must be 60 (180/3)
Now this must mean that angle a is equal to the opposing angle being 60

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Answer the questions below. Be sure to mark all answers that apply.

BabaBlast [244]

Answer:

Part A: Only 460 is divisible by 2

Part B: 385, and 460 are divisible by 5

Part C: Only 460 works for this one

3 0

2 years ago

What is the vertex of the function f(x) = one-halfx2 + 3x + three-halves?

Morgarella [4.7K]

Answer:

The vertex of the function is (-3 , -3)

Step-by-step explanation:

* Lets explain how to find the vertex of the quadratic function

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

where a , b , c are constant

- The vertex of the quadratic function is (h , k) , where

h = -b/2a and k = f(h)

* Lets solve the problem

∵ f(x) = one-half x² + 3x + three-halves

∴ f(x) = 1/2 x² + 3x + 3/2

∵ f(x) = ax² + bx + c

∴ a = 1/2 , b = 3 , c = 3/2

∵ The coordinates of its vertex is (h , k)

∵ h = -b/2a

∴ h = -3/2(1/2) = -3/1 = -3

∴ h = -3

∵ k = f(h)

∴ k = f(-3)

∵ f(-3) = 1/2 (-3)² + 3(-3) + 3/2 = -3

∴ k = -3

∴ The vertex of the function is (-3 , -3)

5 0

3 years ago

Read 2 more answers

The sum of 14 and a number is equal to 7

NikAS [45]

The sum (+) of 14 and a number (x) is equal to (=) 7.

14 + x = 7

To solve, subtract 14 from both sides.

x = -7

7 0

3 years ago

Can someone help plz

Ksenya-84 [330]

Answer: x=-7

Step-by-step explanation:

1) The angles of a triangle are equal to 180

2) Add your angles together and set them equal to 180 like this:

x+59+x+51+84=180

3) Combine like terms:

2x+ 194 =180

4) Subtract 195 from both sides:

2x+ 194 =180

- 194 -194

2x = -14

5) Divide by 2 on both sides

2x= -14

/2 /2

x= -7

7 0

3 years ago

Find the missing length of the triangle.

AysviL [449]

Answer:

12 in.

Step-by-step explanation:

Leg = a = 9 in.

Leg = b

Hypotenuse (side opposite of the right angle) = c = 15 in.

Use the pythagorean theorem to find the missing side length

$a^2 + b ^2 = c ^2$

$9^2 + b^2 = 15^2$

Simplify

$81 + b^2 = 225$

Subtract 81 from both sides of the equation

$b^2 = 144$

Find the square root of 144

b = $\sqrt{144}$

b = 12

12 in

Hope this helps :)

6 0

3 years ago