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castortr0y [4]
3 years ago
9

I know solve 13but i want steps​

Mathematics
2 answers:
Fynjy0 [20]3 years ago
6 0
From Pythagorean theorem in ADB triangle
AB^2+BD^2=AD^2
9^2+BD^2=15^2
BD=12

From Pythagorean theorem in BCD triangle
CD^2+BD^2=BC^2
BC^2=5^2+12^2
BC=13
mars1129 [50]3 years ago
5 0

Step-by-step explanation:

In triangle ABD,

ang.ABD=90°

AB=9 cm

AD=15 cm

Now,

Using Pythagoras theorem,

AD2=AB2+BD2(2=square)

or,152=92+BD2

or,225=81+BD2

or,225-81=BD2

or,144=BD2

or,BD=12 cm

Then,

In triangle CBD,

CD=5 cm

BD=12 cm

BC=?

Now,

Using Pythagoras theorem,

BC2=CD2+BD2

or,BC2=52+122

or,BC2=25+144

or,BC2=169

or,BC=13 cm

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lubasha [3.4K]

Answer:

4x > 10

Step-by-step explanation:

4x > 10

6 0
3 years ago
State the additive property of zero using the variable b.
Juli2301 [7.4K]

Answer with Step-by-step explanation:

We are given a variable b

We have to state the additive property of zero using the variable b.

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Mathematical representation:

b+0=0+b=b

Suppose, a number  b=9

Then, 9+0=9

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This property is called additive property of zero because when 9 is added to 0 then we get sum equals to 9.

7 0
3 years ago
JK = 7x + 9<br> JL = 114, and<br> KL = 9x + 9,<br> Find KL.
VikaD [51]

Answer:

KL= 63

Step-by-step explanation:

JK=7x+9 , JL=114 , KL=9x+9 ( if the points are on the same line and point J at the end point and K in the middle)

*J_______________________K___________________________L

JL=JK+KL

114=7x+9+9x+9

114-18=16 x

16x=98

x=98/16=6

KL= 9x+9

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Answer:

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Step-by-step explanation:

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