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dalvyx [7]
2 years ago
7

Will mark brainliest

Mathematics
1 answer:
n200080 [17]2 years ago
4 0

Answer:

x=8, y=15 degrees

Step-by-step explanation:

3x-13=x+3

3x=x+16

2x=16

x=8

(180-90)÷2=45

45÷3=15

y=15

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Which number represents 4%?
Helen [10]

Answer:

0.04 or 4/100

Step-by-step explanation:

Think of a percentage as a very lazily written fraction. 4% = 4/100

Just convert the fraction to a decimal.

---

hope it helps

5 0
2 years ago
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Help i dont feel like doing this help me please
natita [175]

Answer:

The answer is A. $1.35

Step-by-step explanation:

Two $10 bills are equal to $20.

Your change is $7.85

So if you subtract $7.85 from $20 you will come up with $12.15.

$12.15 is how much money you spend on mini burgers.

You can then divide how much money you spent with how many burgers you bought.

12.15 divided by 9 gives us 1.35. So each burger was $1.35.

3 0
2 years ago
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tatyana61 [14]
The answer should be 5/2
8 0
2 years ago
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Find the perimeter of a field that has length 2/x + 1 and width 5/x^2 -1.
Semmy [17]

Answer:

D)4x + 6/(x + 1)(x - 1)

Step-by-step explanation:

A field is basically a rectangle, so to find the perimeter of our field we are using the formula for the perimeter of a rectangle

p=2(l+w)

where

p is the perimeter

l is the length

w is the width

We know from our problem that the field has length 2/x + 1 and width 5/x^2 -1, so l=\frac{2}{x+1} and w=\frac{5}{x^2-1}.

Replacing values:

p=2(l+w)

p=2(\frac{2}{x+1} +\frac{5}{x^2-1})

Notice that the denominator of the second fraction is a difference of squares, so we can factor it using the formula a^2-b^2=(a+b)(a-b) where a is the first term and b is the second term. We can infer that a=x^2 and b=1^2. So, x^2-1=(x+1)(x-1). Replacing that:

p=2(\frac{2}{x+1} +\frac{5}{x^2-1})

p=2(\frac{2}{x+1} +\frac{5}{(x+1)(x-1})

We can see that the common denominator of our fractions is (x+1)(x-1). Now we can simplify our fraction using the common denominator:

p=2(\frac{2(x-1)+5}{(x+1)(x-1)} )

p=2(\frac{2x-2+5}{(x+1)(x-1)} )

p=2(\frac{2x+3}{(x+1)(x-1)} )

p=\frac{4x+6}{(x+1)(x-1)}

We can conclude that the perimeter of the field is D)4x + 6/(x + 1)(x - 1).

3 0
3 years ago
Compare the following numbers using < or >?
nordsb [41]

21. 5.65 > 5.1
22. 6.2 < 6.5
23. 4.1 < 4.5
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27. 8.6 >8.1
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29. 4 > 3.9
30. 1.4 < 1.75
31. 7.1 < 7.5
32. 3 < 3.01
4 0
3 years ago
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