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2 years ago

Please explain this to me I have this on Khan but there's not a video that can explain it to me

Mathematics

2 answers:

iragen [17]2 years ago

8 0

Answer:

2, 3, 4

Step-by-step explanation:

x is 4

y = 1/4(4)+1

cross out both 4s so now you have 1+1 --> 2

so, y = 2

-------------

x is 8

y = 1/4(8)+1

4 * 2 is 8 so simplify the fraction and now you have 2 + 1 ---> 3

so, y = 3

-------------

x is 12

y = 1/4(12)+1

4 * 3 is 12 so simplify the fraction and now you have 3 + 1 ---> 4

so, y = 4

oee [108]2 years ago

7 0

Hi!

$for \ x=4\rightarrow y=\frac{1}{4}\cdot4+1=1+1=\boxed2\\\\for \ x=8\rightarrow y=\frac{1}{4}\cdot8+1=2+1=\boxed3\\\\for \ x=12\rightarrow y=\frac{1}{4}\cdot12+1=3+1=\boxed4$

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Solve the following system of equations and show all work. <br> y = x^2 + 3<br> y = x + 5

RUDIKE [14]

Since both of the equations are equal to y...set them equal to each other.. So it will then be

x^2+3=x+5
-3 -3
x^2=x+2 ---> x^2-x-2
(x-2) (x+1)
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7 0

2 years ago

Jenny multiplies the square root of her favorite positive integer by $\sqrt{2}$. Her product is an integer. a) Name three number

Dmitry [639]

Answer:

Part a) $2,50,18$

Part b) When Jenny divides the square root of her favorite positive integer by $\sqrt{2}$ , she gets an integer

Step-by-step explanation:

Let

x-------> the favorite positive integer

Part a)

1) For $x=2$

$\sqrt{2}*\sqrt{2}=\sqrt{4}=2$ -----> the product is an integer

The number $x=2$ could be Jenny favorite positive integer

2) For $x=50$

$\sqrt{50}*\sqrt{2}=\sqrt{100}=10$ -----> the product is an integer

The number $x=50$ could be Jenny favorite positive integer

3) For $x=18$

$\sqrt{18}*\sqrt{2}=\sqrt{36}=6$ -----> the product is an integer

The number $x=18$ could be Jenny favorite positive integer

Part B)

1) For $x=2$

$\sqrt{2}/\sqrt{2}=\sqrt{1}=1$ -----> the result is an integer

2) For $x=50$

$\sqrt{50}/\sqrt{2}=\sqrt{25}=5$ -----> the result is an integer

3) For $x=18$

$\sqrt{18}/\sqrt{2}=\sqrt{9}=3$ -----> the result is an integer

Therefore

When Jenny divides the square root of her favorite positive integer by $\sqrt{2}$ , she gets an integer

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3 years ago

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Answer:

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Step-by-step explanation:

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2 years ago

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mojhsa [17]

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Brett works at a local pet store. When he works 4 hours he earns $36. When he works 9 hours he earns $81. What is the rate per h

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