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il63 [147K]
3 years ago
13

Help for good luck !!

Mathematics
2 answers:
miskamm [114]3 years ago
7 0

Answer:

third and the first one

Step-by-step explanation:

Bumek [7]3 years ago
6 0

Answer:

ddddd

Step-by-step explanation:

dddddddd

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Let AB // ED , AB = 10 units, AC = 12 units, and DE = 5 units. What is the length of AD?​
zheka24 [161]

Answer:

length of CD = 18 units.

Step-by-step explanation:

In ΔABC and ΔCED,

AB║DE and AD is a transversal line,

m∠ABC = m∠CED [Alternate interior angles]

m∠ACB = m∠DCE [Vertically opposite angles]

ΔABC ~ ΔCED [By AA property of similarity]

Therefore, by the property of similar triangles, corresponding sides will be proportional.

\frac{AB}{DE}= \frac{AC}{DC}

\frac{10}{5}=\frac{12}{CD}

CD = 6

Since, AD = AC + CD

AD = 12 + 6

     = 18 units

Therefore, length of CD = 18 units.

4 0
3 years ago
What is the domain and range of f(x)=-x squared -9
NNADVOKAT [17]

Answer:

D :  - ∞ < x < + ∞

Because the function is always defined,so the the domain goes from - to + infinity.

8 0
3 years ago
Pls help me!!! #18-19
8090 [49]

Answer:

18. Sqrt40 goes between 6 and 7.

19. Sqrt83 ~= 9

Step-by-step explanation:

For both of these problems, it's really useful to be very familiar with the perfect squares on the times table. 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225...



On #18, we're looking at the sqrt40. This will be between sqrt36 and sqrt49, because 40 is between 36 and 49. But sqrt36 is 6 and sqrt49 is 7. So sqrt40 is between 6 and 7.

For #19, the sqrt83 is far closer to sqrt81 than it is to sqrt100. Sqrt81 = 9. So sqrt83 is very close to 9, it would round to 9 and not 10.

7 0
2 years ago
Ula<br> - 4 5/8 divided by 1 1/2
bogdanovich [222]

<em>Answer:</em>

The exact form is 5/44 and decimal form is .1136

<em>Step-by-step explanation:</em>

Divide by a fraction and multiply by its reciprocal

5/8  * 2/11

Cancel the common factor 2

5/4  * 1/11

Multiply 5/4 and 1/11

<em>5/4(11)</em>

The result is

<em>5/44 or .1136</em>

6 0
4 years ago
So I need 20 words but I don’t get why so here’s this useless sentence
kherson [118]

Answer:

Oh lol im confused ‍

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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