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Tcecarenko [31]
2 years ago
12

Find the value of x.

Mathematics
1 answer:
OleMash [197]2 years ago
5 0

Answer:

6

Step-by-step explanation:

The two small triangles are congruent by SAS.

By CPCTC, x = 6.

Answer: 6

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Is 1.2/3 and 1.8/ 4/5 proportional
Stella [2.4K]

Answer:

No

Step-by-step explanation:

1.2/3 =0.4

4/5 can be written as 0.8

So, 1.8/0.8 = 2.25.

However, 1.8/4/5 is the same as:

1.8/1 ÷ 4/5

Keep Change Flip

1.8/1 x 5/4 = 9/4

(1.8 x 5=9 & 1 x4 =4)

9/4 =2.25

3 0
2 years ago
Pls help With this question thank you
Lapatulllka [165]

Answer:

CD=4 \text{ cm }

Step-by-step explanation:

We have a similarity of triangles. Once the side BC and ED are parallel,

$\frac{BC}{AC} =\frac{ED}{AD} $

$\frac{10}{AC} =\frac{5}{4} $

Once AC=AD+CD \Rightarrow AC=4+CD

$\frac{10}{4+CD} =\frac{5}{4} $

5CD+20=40

5CD=20

CD=4 \text{ cm }

6 0
3 years ago
Find the interior and exterior angles of regular triangle.
storchak [24]

Answer:

dhbsugubihsvhukejbduisxkgdbwq

Step-by-step explanation:

iwdyhbjksgcsbhhsnnsgdhhsns

4 0
2 years ago
Read 2 more answers
. The psychology club is having a self-proclaimed psychic come to their campus fund-raising event to demonstrate his abilities.
ElenaW [278]

Answer:

the club looses 12.50$

Step-by-step explanation:

125 tickets * 1.50$ per ticket

125 * 1.50 = 187.5 earned

200$ fee for psychic - 187.5$ earned

200 - 187.5 = 12.5

the club will lose 12.50$

(this psychic seems like a bit of a scam lol)

3 0
3 years ago
Select the assumption necessary to start an indirect proof of the statement. If 3a+7 < 28, then a<7.
pashok25 [27]
When applying indirect proofs, we assume the negation of the conclusion is true, and show that this assumption would lead to nonsense, or contradiction.

In our case we assume a is not smaller than 7, that is we assume a≥7.

a≥7 then, multiplying both sides by 3:
3a≥21, then, adding both sides 7:

3a+7≥28,

which is a contradiction because 3a+7 is smaller than 28.

So our assumption is wrong, which means the opposite of it is correct.


Answer: assume a≥7
7 0
3 years ago
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