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3 years ago

What strategies can help you determine about unknown side when finding perimeter

Mathematics

1 answer:

Luden [163]3 years ago

8 0

Answer

I think you can visulize the problem. whne you see a rectangle (for example) both the long sides will have the same length. Both the short sides will also have the same width. There you have it! that's how u find the unknown side (s).

Hope this helps :)

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What is the excluded value of x for the expression 1/x-6?

Leya [2.2K]

$\frac{1}{x-6} \\\\ x-6\neq 0 \\ x\neq 6$

Answer: x ≠ 6

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4 years ago

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What is (12.2a + 9.7b) – (18.1b – 0.2a) – (6.7a + 6.8b), simplified?

AleksAgata [21]

Answer:

5.7a - 18.2b

Step-by-step explanation:

Step 1: Write the equation

(12.2a + 9.7b) – (18.1b – 0.2a) – (6.7a + 6.8b)

Step 2: Open all brackets

12.2a + 9.7b - 18.1b + 0.2a - 6.7a - 6.8b

Step 3: Arrange all 'a' together and all 'b' together

12.2a + 0.2a - 6.7a + 9.7b - 18.1b - 6.8b

Step 4: Simplify

5.7a - 18.2b

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3 years ago

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Can someone plz help me solved this problem I need help plz help me! Will mark you as brainiest!

I am Lyosha [343]

Answer:

13 l of 15%, 13 l of 25%, 26 l of 70%

Step-by-step explanation:

solutions:

15%, 25% and 70%

final solution:

52 l of 45%

This includes 0.45*52l= 23.4 l acid

Let's assume:

amount of 15% solution= x
amount of 25% solution= y
amount of 70% solution= z
and we have z=2y

so there are 2 equation:

x+y+z=52

0.15x+0.25y+0.7z=23.4

x+y+2y= 52 ⇒ x+3y= 52 ⇒ x= 52- 3y

0.15x+0.25y+1.4y=23.4

0.15x+1.65y=23.4
0.15*(52-3y)+1.65y=23.4
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1.2y= 15.6

y=15.6/1.2
y= 13 l

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4 years ago

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The Answer to the prob is 20 cm

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Use the distributive property to determine an equivalent expression. 2(2x+7) *

almond37 [142]

Answer:

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Step-by-step explanation:

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