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julsineya [31]
4 years ago
9

Hy! (√2+1)²+(3-√3)²-(√5+1)²=??? Thank yours!:*

Mathematics
1 answer:
OlgaM077 [116]4 years ago
4 0
(\sqrt2+1)^2+(3-\sqrt3)^2-(\sqrt5+1)^2=\\
2+2\sqrt2+9-6\sqrt3+9-(5+2\sqrt5+1)=\\
20+2\sqrt2-6\sqrt3-5-2\sqrt5-1=\\
14+2\sqrt2-6\sqrt3-2\sqrt5
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Estimate and then solve the equation. X - 17 4/5=-13 1/5
Black_prince [1.1K]

Answer: 5 (estimate)

Step-by-step explanation:

x - 17 4/5 = -13 1/5

Estimate:  x - 18 = -13

x - 18 + 18 = -13 + 18

x = 5

actual answer without estimating using exact numbers is 4 3/5 (so estimate is reasonable)

7 0
3 years ago
2. The number of nickels that Christine has is
aev [14]

Answer:

The number of nickels is  15

The number of Dimes is 3

Step-by-step explanation:

Let the number of dimes  Christine has be d

The number of nickels with christine be n

Then the number of Nickels  Christine has will be  

n = 5d ----------------------------------(1)

Now The total value of both dimes and nickels is  = $1.05

This can be represented as

5n +10d = 105  (in cents)

From eq(1)

5(5d) + 10d = 105

25d+10d = 105

35d = 105

d = \frac{105}{35}

d = 3----------------------------------(2)

Substituting (2) in (1), we get

n = 5(3)

n = 15

7 0
3 years ago
How do you determine the domain of a function ?
Sunny_sXe [5.5K]

Answer:

Let y = f(x) be a function with an independent variable x and a dependent variable y.

If a function f provides a way to successfully produce a single value y using for that purpose a value for x then that

chosen x-value is said to belong to the domain of f. If there is a requirement that a y-value produced by a function

must be a real number, the following conditions are commonly checked:

1. Denominators cannot equal 0.

2. Radicands (expressions under a radical symbol) of even roots (square roots, etc)  

cannot have a negative value.

3. Logarithms can only be taken of positive values.

4. In word problems physical or other real-life restrictions might be imposed, e.g. time is  

nonnegative, number of items is a nonnegative integer, etc.

8 0
3 years ago
Read 2 more answers
Solve for x.
Leto [7]

Answer:

x < 4

Step-by-step explanation:

Step 1: Subtract 10 from both sides.

  • -8x + 10 - 10 > -22 - 10
  • -8x > -32

Step 2: Divide both sides by -8 and flip the inequality sign.

  • \frac{-8x}{-8} > \frac{-32}{-8}
  • x < 4

Therefore, the answer is x < 4.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

3 0
2 years ago
Shawna’s book report must have a minimum of 500 words. She counted the number of words she wrote already and realized she still
AlladinOne [14]
500/4= 125
she has written 125 words and needs to write 375 more
4 0
3 years ago
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