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3 years ago

Help please!!!

Mathematics

1 answer:

Lelechka [254]3 years ago

5 0

Answer: the x coordinate of the solution is 1

Step-by-step explanation:

y = x^2 + 1 - - - - - - 1

y – 1 = x - - - - -2

From equation 2 , y = x + 1

Substituting y = x + 1 into equation 1, it becomes

x + 1 = x^2 + 1

x^2 + 1 - x - 1 = 0

x^2 - x - 1 + 1 = 0

x^2 - x = 0

Let x be on the right hand side of the equation and x^2 remains on the left hand side of the equation. It becomes

x^2 = x

Dividing the left hand side of the equation and the right hand side of the equation by x, it becomes

x^2/x = x/x

x = 1

Therefore, x = 1

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Which expression are equivalent to 2r+(t+r)

umka21 [38]

Simplified, it is 3r+t.

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4 years ago

The mystery number has five digits,the digit in the tenth place is double the digit in the tens place,the mystery number rounds

hjlf

Answer:

See explanation

Step-by-step explanation:

If the mystery number rounds to 700, then it has 3 digits before decimal points and two digits after decimal point.

Hence, the mystery number is

$a b c . d e$

The digit in the tenth place is double the digit in the tens place, so

$d=2b$

If b = 1, then d = 2

If b = 2, then d = 4

If b = 3, then d = 6

If b = 4, then d = 8

The difference between the digit in the hundreds place and the ones place is 3, so

$a-c=3$

The first digit can be only 7, because b < 5 and the number rounds to 700. So

If a = 7, then c = 4

All possible answers:

714.2e

724.4e

734.6e

744.8e,

where e is an arbitrary digit from 0 to 9.

There are 40 possible numbers which match the situation.

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4 years ago

What is 5 less than 15 as an expression

Aleonysh [2.5K]

The phrase "5 less than" means we are subtracting 5 from some amount. And that amount is 15

So, 15 - 5 is the answer.

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4 years ago

Does W(t)=0 have a solution?

AlladinOne [14]

No it does not have one

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3 years ago

Use prime factorization to reduce each fraction 1. 22/165 2. 35/210

yKpoI14uk [10]

Lets find the prime factorization of 22, 165, 35 and 210. Prime factorization of a number is breaking a number down into the set of prime numbers which multiply together to result in the original number.

The prime factorization of the number 22 is:

$22=2\times11$

Similarly, for 165, 35 and 210 we have

$\begin{gathered} 165=3\times5\times11 \\ 35=5\times7 \\ 210=2\times3\times5\times7 \end{gathered}$

Then, we can solve the given questions.

Question 1.

$\frac{22}{165}=\frac{2\times11}{3\times5\times11}$

so we can cancel out the number 11 and get

$\frac{22}{165}=\frac{2}{3\times5}=\frac{2}{15}$

Then, the answer is

$\frac{2}{15}$

Question 2.

$\frac{35}{210}=\frac{5\times7}{2\times3\times5\times7}$

and we can cancel out the number 5 and 7, then we obtain

$\frac{35}{210}=\frac{1}{2\times3}$

then, the answer is

$\frac{1}{6}$

5 0

1 year ago