3 years ago

Please help me with this

Mathematics

2 answers:

hammer [34]3 years ago

5 0

A or number 1 should be the answer

Bogdan [553]3 years ago

4 0

Answer:

Square 1

Step-by-step explanation:

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If x+y is rational,must x and y each br rational?

aniked [119]

Answer:

No.

Step-by-step explanation:

$x$ and $y$ could be irrational and $x+y$ be rational.

Example:

Let $x=\sqrt{2}$ and $y=-\sqrt{2}$ .

And $x+y=\sqrt{2}+-\sqrt{2}=0$ and 0 is rational.

3 0

3 years ago

Read 2 more answers

Write an exponential function whose graph passes through the given points (0, - 2) and (- 1, - 4)

melamori03 [73]

Answer:

$y = 2(0.5) {}^{x}$

Step-by-step explanation:

Use the general formula of exponential equation

$y = ab {}^{x}$

Plug 0,2 into the function

$- 2 = ab {}^{0}$

$- 2 = a \times 1$

$a = - 2$

$y = - 2b {}^{x}$

$- 4 = - 2b {}^{ - 1}$

$2 = b {}^{ - 1}$

${2}^{ \frac{ 1}{ - 1} }$

$2 {}^{ - 1} = 0.5$

B=0.5

$y = 2(0.5) {}^{x}$

3 0

3 years ago

Orange<br> 7<br> 1<br> -×-18=2<br> 2

kenny6666 [7]

here i don't know if this can help you but hey i tried.

6 0

3 years ago

A circle with center P is shown. RS and ST are tangent to circle P. What is the degree measure of angle RST

Bogdan [553]

Bro I’m rly sorry but I don’t know the answer to this

5 0

3 years ago

Can someone please help me with this problem?

Likurg_2 [28]

It is a function so u dont have to solve the equation u just have to make a graphic on it...i have learned in school that first u should do the line of x^3 then u should move the line -2 on the graphic( vertically) and then +8 horizontally

3 0

3 years ago