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3 years ago

Find the length of AC.

Mathematics

2 answers:

enyata [817]3 years ago

6 0

Answer:

21√2 m

Step-by-step explanation:

AC = √AD²+CD²

= √21²+21²

=√2×21²

= 21√2 m

Drupady [299]3 years ago

3 0

Answer:

I think its 42 maybe? I'm maybe wrong though.

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A worde that place before a nawe<br>or pronden in a sentence

bulgar [2K]

Answer:

Prepositions

Step-by-step explanation:

Prepositions are usually used in front of nouns or pronouns and they show the relationship between the noun or pronoun and other words in a sentence

6 0

3 years ago

In the figure CD is the perpendicular bisector of AB . If the length of AC is 2x and the length of BC is 3x - 5 . The value of x

Dennis_Churaev [7]

Answer

Find out the value of x .

To proof

SAS congurence property

In this property two sides and one angle of the two triangles are equal.

in the Δ ADC and ΔBDC

(1) CD = CD (common side of both the triangle)

(2) ∠CDA = ∠ CDB = 90 °

( ∠CDA +∠ CDB = 180 ° (Linear pair)

as given in the diagram

∠CDA = 90°

∠ CDB = 180 ° - 90°

∠ CDB = 90°)

(3) AD = DB (as shown in the diagram)

Δ ADC ≅ ΔBDC

by using the SAS congurence property .

AC = BC

(Corresponding sides of the congurent triangle)

As given

the length of AC is 2x and the length of BC is 3x - 5 .

2x = 3x - 5

3x -2x =5

x = 5

The value of x is 5 .

Hence proved

7 0

3 years ago

Read 2 more answers

How can i cancle the 7 day free trail

kipiarov [429]

Answer:

lol

in settings probable

Step-by-step explanation:

5 0

3 years ago

Compare 4 x 10^6 and 2 x 10^7.

marishachu [46]

Answer:

C. $2\times 10^7$ is 5 times larger than $4\times 10^6$

Step-by-step explanation:

We want to compare $4\times 10^6$ and $2\times 10^7$ .

In order to determine how many times

$2\times 10^7$

is larger than

$4\times 10^6$ ,

we need to divide $2\times 10^7$ by $4\times 10^6$ to obtain;

$\frac{2\times 10^7}{4\times 10^6} =\frac{10}{2} =5$

Therefore we can see that;

$2\times 10^7$ is 5 times larger than $4\times 10^6$

The correct answer is C.

6 0

3 years ago

Factorise this expression as fully as possible<br>4x²+x

borishaifa [10]

You can only factor $x$ out of both terms:

$x(4x+1)$

8 0

3 years ago