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bija089 [108]
3 years ago
8

Please help me on this question and explain how you got your answer

Mathematics
1 answer:
Vsevolod [243]3 years ago
4 0

Answer:

Step-by-step explanation:

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5y +2 -4y I need help
Yuliya22 [10]

Answer:

Simplified- 1y+2 or y+2

Step-by-step explanation:

To simplify this equation, subtract the common variables.

(5y-4y)+2

This turns into..

1y+2 or y+2

3 0
3 years ago
What is the discriminant of the quadratic equation 0 = –x2 + 4x – 2?
kvv77 [185]
0=-x2+4x-2
+x2-4x+2=+x2-4x+2
___________________
x2-4x+2=0

(-4)^2-4(1)(2)

16-8

Final Answer: 8

3 0
3 years ago
Read 2 more answers
Surds and roots<br> look at picture
FinnZ [79.3K]

\huge \boxed{\mathfrak{Question} \downarrow}

  • Expand & simplify ⇨ ( \sqrt{10}  -  \sqrt{2} ) ^{2}. Give your answer in the form b - c \:  \sqrt{5} where b & c are integers.

\large \boxed{\mathbb{ANSWER\: WITH\: EXPLANATION} \downarrow}

( \sqrt { 10 } - \sqrt { 2 } ) ^ { 2 }

Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\sqrt{10}-\sqrt{2}\right)^{2}.

\left(\sqrt{10}\right)^{2}-2\sqrt{10}\sqrt{2}+\left(\sqrt{2}\right)^{2}

The square of \sqrt{10} is 10.

10-2\sqrt{10}\sqrt{2}+\left(\sqrt{2}\right)^{2}

Factor 10=2\times 5. Rewrite the square root of the product \sqrt{2\times 5} as the product of square roots \sqrt{2}\sqrt{5}.

10-2\sqrt{2}\sqrt{5}\sqrt{2}+\left(\sqrt{2}\right)^{2}

Multiply \sqrt{2} and \sqrt{2} to get 2.

10-2\times 2\sqrt{5}+\left(\sqrt{2}\right)^{2}

Multiply -2 and 2 to get -4.

10-4\sqrt{5}+\left(\sqrt{2}\right)^{2}

The square of \sqrt{2} is 2.

10-4\sqrt{5}+2

Add 10 and 2 to get 12.

\boxed{ \boxed{\bf\:12-4\sqrt{5} }}

  • Here, b & c are integers where \boxed{ \sf \: b = 12 \: and \: c = 4}
7 0
3 years ago
Read 2 more answers
Solve the problem.
andrezito [222]

Answer: 80,000

Step-by-step explanation:

Plug in 50,000 where the x are and then just solve from there

4 0
3 years ago
The graph below shows three functions: Graph of function f of x equals 0.5 to the power x. Graph of function g of x is a line se
hoa [83]

Answer:

f(x)= 0.5^x has all real numbers as its domain

Step-by-step explanation:

We have three functions:

f(x)= 0.5^x while g(x) and p(x) are line segments

g(x) is a line segment which passes through the two points  (-1.8,-3) and ( 1,3.8)

Its domain will be the ends points. so domain of the function g(x) will be [-1.8, 3.8] which is the subset of real numbers.

Like wise domain of function p(x) will be [1.7, 1], which is also the subset of real numbers.

But when we look at f(x) it has all the possible value of x. Thus we can say that f(x)= 0.5^x has all real numbers as its domain.

3 0
3 years ago
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