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mart [117]
3 years ago
11

Evaluate: -6 2 - 28 ÷ 4 + (-9). -52 52 -20 20

Mathematics
1 answer:
Yanka [14]3 years ago
3 0

Answer:

<h2> -62-28/4+(-9)-5252-2020=(-7350)</h2>

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Given a right triangle with a hypotenuse of 15 feet and a height of 6 feet, find the measurement of angle
Artist 52 [7]

Answer:

66.42° between height and hypotenuse

23.58° between base and hypotenuse

Step-by-step explanation:

Using the concept of cosine and sine, we know that cosine of an angle is equal to the adjacent divided by hypotenuse.

Similarly, sine of an angle is given by opposite divided by hypotenuse

Tangent is given by opposite divided by adjacent

In rhis case, we use cosine

\theta=cos^{-1}(\frac {6}{15})=66.4218215217982\\\theta\approx 66.42^{\circ}

Therefore, the angle between the hypotenuse and height is 66.42°

To find the angle between base and hypotenuse, since it is a right angle triangle then the other angle will be 90-66.42=23.58°

8 0
4 years ago
Write 5 equivalent fractions for each fraction. 1/2, 1/4, 1/8, 1/3, 1/6
agasfer [191]

<u>Equivalent Fractions 1/2</u>

2/4

3/6

4/8

5/10

6/12

<u>Equivalent Fractions 1/4</u>

2/8

3/12

4/16

5/20

6/24

<u>Equivalent Fractions 1/8</u>

2/16

3/24

4/32

5/40

6/48

<u>Equivalent Fractions 1/3</u>

2/6

3/9

4/12

5/15

6/18

<u>Equivalent Fractions 1/6</u>

2/12

3/18

4/24

5/30

6/36

6 0
3 years ago
Solve the quadratic equation by completing the square.
Step2247 [10]

Answer:

x1, x2 = 4.74 , -2.74

Step-by-step explanation:

To find the roots of a quadratic function we have to use the bhaskara formula

ax^2 + bx + c

x^2 - 2x - 13

a = 1     b = -2    c = -13

x1 = (-b + √ b^2 - 4ac)/2a

x2 =(-b - √ b^2 - 4ac)/2a

x1 = (2 + √ (2^2 - 4 * 1 * (-13)))/2 * 1

x1 = (2 + √ (4 + 52)) / 2

x1 = (2 + √ 56 ) / 2

x1 = (2 + 7.48) / 2

x1 = 9.48 / 2

x1 = 4.74

x2 = (2 - √ (2^2 - 4 * 1 * (-13)))/2 * 1

x2 = (2 - √ (4 + 52)) / 2

x2 = (2 - √ 56 ) / 2

x2 = (2 - 7.48) / 2

x2 = -5.48 / 2

x2 = -2.74

6 0
4 years ago
Help me on this one too
never [62]

Answer:

C) -2.5<3

Hope this helps!

Hope this helps!

6 0
3 years ago
Read 2 more answers
What's the answer to this question
sesenic [268]
C. 110. This is because all triangles add up to equal 180*. So you add the two angles you have and subtract from 180.
5 0
3 years ago
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