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hjlf
3 years ago
15

How do I factorise an expression

Mathematics
1 answer:
ololo11 [35]3 years ago
3 0
It factorises to -
4(x+6)

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PLEASE HELP!!!!! WORTH 50 POINTS! PLEASE ANSWER ALL QUESTIONS (6,7,8,9)
iogann1982 [59]

Answer:

6. Additional information is required on the two triangles

7. The pair of triangles are similar by SAS similarity postulate

8. Yes, by triangle proportionality theorem

9. DE = 9

Step-by-step explanation:

When two or more triangles are similar, the ratio of the corresponding sides of both triangles is constant

6. From the given figure, more information is required on the two triangles

However, whereby the side with length 10 is parallel to the corresponding side on the other triangle, then the alternate angles formed by the transversal to the two parallel lines are equal and the two triangles are similar by Angle Angle, AA, similarity postulate

7. From the given triangles, the ratio of the corresponding sides relative to the given included angles are;

18/45 and 10/25

18/45 = 2/5

10/25 = 2/5

Therefore, given that two pair of corresponding sides have the same included angle and that the two included corresponding sides of the of the two triangles are proportional, then the two triangles are similar by the Side Angle Side SAS similarity postulate

8. By triangle proportionality theorem, we have;

If \overline{MN} ║ \overline{KL}, then we have;

3/6 = 4/8 = 2

∴  \overline{MN} ║ \overline{KL}

9. By triangle proportionality theorem, where \overline{BE} ║ \overline{CD}, we have;

12/20 = DE/15

∴ DE = 15 × 12/20 = 9

DE = 9

7 0
3 years ago
Geometry help please
algol [13]
I think the answer is 76 because the tree is halfway between building and stake
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3 years ago
Please help ASAP!!! 34 points!
vladimir2022 [97]
The answer would be B y=1/2x-1
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3 years ago
A zoo has six adult tigers. Their caretaker orders a total of 40.8 kilograms of meat for them each day. Each tiger receives the
lbvjy [14]

Each tiger gets 6.8 kilograms of meat a day. I used a calculator to divide 60.8 by 6.

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3 years ago
What is 18 minus 4 8/9
Step2247 [10]

The answer is 13.1111111111. Hope this helps!

7 0
3 years ago
Read 2 more answers
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