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Vikentia [17]
3 years ago
8

What is the measure of angle ADC?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
4 0

angle ADC equals 74 degrees

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If AD = 5.1cm, find the height (in cm) of the triangle.
Irina-Kira [14]

Answer:

I. AC = 15 cm

II. h = 7.4 cm

Step-by-step explanation:

I. Determination of AC

AB = 9 cm

BC = 12 cm

AC =?

The length AC can be obtained by using pythagoras theory as illustrated below:

AC² = AB² + BC²

AC² = 9² + 12²

AC² = 81 + 144

AC² = 225

Take the square root of both side

AC = √225

AC = 15 cm

II. Determination of the height.

AB = 9 cm

AD = 5.1 cm

BD = h =?

The height of the triangle can be obtained by using pythagoras theory as illustrated below:

AB² = AD² + BD²

9² = 5.1² + h²

81 = 26.01 + h²

Collect like terms

h² = 81 – 26.01

h² = 54.99

Take the square root of

h = √54.99

h = 7.4 cm

5 0
3 years ago
2 thousands 7 ten divided 10 standard form
ANTONII [103]

Answer:

if im understanding right, answer is 207

Step-by-step explanation:

1000 + 1000 = 2000

7 x 10 = 70

2070 / 10 = 207

8 0
3 years ago
Quadrilateral ABCD is translated to get quadrilateral A'B'C'D'. vertex A is at (-5,2) , and vertex A' is ay (2,-2), quadrilatera
belka [17]

Answer:

(-1,3)

Step-by-step explanation:

Given that the quadrilateral ABCD is translated to get quadrilateral A'B'C'D'. The vertex A is at (-5,2) is translated to vertex A' is at (2,-2).

The translation is x-direction, a, is the difference of x-coordinates of both the points, a=2-(-5)=2+5=7.

The translation is y-direction, b, is the difference of y-coordinates of both the points, b = -2-2 = -4.

As all the points are translated by the same magnitude as well as in the same direction, so by adding a to x and b to y coordinate of any points, the translated point can be determined.

The vertex of point B is (-6,5), so, the vertex of the point B' would be (-6+a, 5+b)=(-6+7, 5+(-4))=(-1,3).

Hence, the vertex of point B' is (-1,3).

5 0
3 years ago
PLZ HELP RN ILL MARK YOU BRAINLIST IF ITS RIGHT PLZZZ IM DESPERATE
melamori03 [73]

Answer:

n/-10=-120

n=1200

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is x/6-3=15 find for x
blsea [12.9K]

Answer:

x=3

Step-by-step explanation:

x/6 -3 =15

Add the 3 to the other side.

x/6=18

Divide 18 by 6 to get the exponent by itself.

x=3

5 0
3 years ago
Read 2 more answers
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