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3 years ago

Hey someone help me plz..hurry

Mathematics

2 answers:

Natalka [10]3 years ago

7 0

Answer:

the correct answer is no real solutions

Tomtit [17]3 years ago

4 0

Answer:

2 real solutions

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The sum of two consecutive odd integers is 156. Which is an equation that can be used to solve for x?

satela [25.4K]

Answer:

Below.

Step-by-step explanation:

We can write an odd integer as 2x + 1 so consecutive odd digits would be 2x + 1 and 2x + 3, so the equation is:

2x + 1 + 2x + 3 = 156

4x + 4 = 156 can be used to solve for x and find the integers.

4x = 152

Dividing through by 4:

x = 152/4 = 38

So the 2 integers are 2(38) + 1 and 2(38) + 3

= 77 and 79.

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4 years ago

When randy works 5 hours as a baseball umpire. he earns $77.50. when he works 18 hours, he earns $279.00. which equation represe

rewona [7]

Answer:

m=15.5h

Step-by-step explanation:

279 divided by 18 and 77.5 divided by 5 equal 15.5 so that is how much randy gets paid per hour (h)

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3 years ago

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Circle all the ODD numbers. Underline all the EVEN numbers 728, 433, 291, 902, 774

nikitadnepr [17]

Odd = 433, 291
even = 728, 902, 774

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3 years ago

How can I factorise (2x cubed - 5x + 3) ?

PilotLPTM [1.2K]

$2x^3-5x+3=2x^3-2x-3x+3\\\\=2x(x^2-1)-3(x-1)\\\\=2x\underbrace{(x^2-1^2)}_{use\ (*)}-3(x-1)\ \ \ |(*)\ a^2-b^2=(a-b)(a+b)\\\\=2x\underbrace{(x-1)}_{(**)}(x+1)-3\underbrace{(x-1)}_{(**)}\\\\=(x-1)[2x(x+1)-3]\\\\=(x-1)\underbrace{(2x^2+2x-3)}_{(***)}\\\\(***)\ 2x^2+2x-3\to a=2;\ b=2;\ c=-3\\\\x=\frac{b^2\pm\sqrt{b^2-4ac}}{2a}$

$therefore\\x=\frac{-2\pm\sqrt{2^2-4(2)(-3)}}{2(2)}=\frac{-2\pm\sqrt{4+24}}{4}=\frac{-2\pm\sqrt{28}}{4}=\frac{-2\pm\sqrt{4\cdot7}}{4}=\frac{-2\pm2\sqrt7}{4}\\\\=\frac{-1\pm\sqrt7}{2}\\\\so,\ the\ answer:\\\\(x-1)\cdot2\left(x-\frac{-1-\sqrt7}{2}\right)\left(x-\frac{-1+\sqrt7}{2}\right)\\\\=\boxed{(x-1)(2x+1+\sqrt7)\left(x+\frac{1-\sqrt7}{2}\right)}=\boxed{\frac{1}{2}(x-1)(2x+1+\sqrt7)(2x+1-\sqrt7)}$

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3 years ago

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The Pythagorean Theorem and Irrational numbers

Natalka [10]

49=16+x^2
x^2= 33
x= square root of 33

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3 years ago