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3 years ago

HELP THIS IS DUE TONIGHT YOU CAN JUST DO 6A. - 6B.

Mathematics

2 answers:

lyudmila [28]3 years ago

6 0

For 6A I think it is 90 degrees
For 6B I think all letters rotate to a 90 degrees

Lostsunrise [7]3 years ago

3 0

6A:-

The angle will be 90° .

The reflection can be happen on plane mirror so it will be 90°

6B:-

All 4 angles A ,B,C,D will be rotated clockwise 90°.

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Let a, b, c, and d be real numbers with a, c 6= 0. Prove that the lines y = ax+b and y = cx + d have the same x-intercept if and

Monica [59]

Step-by-step explanation:

We have got the lines :

$y=ax+b\\y=cx+d$

Both lines intercept the x-axis in the point :

$I = (i_{1} ,i_{2})$

In all point from x-axis the y-component is equal to 0.

$I=(i_{1},o)$

We replace the I point in the lines equations:

$0=a(i_{1})+b \\0=c(i_{1})+d$

From the first equation :

$0=a(i_{1})+b \\-b=a(i_{1})\\i_{1}=\frac{-b}{a}$

From the second equation :

$0=c(i_{1})+d\\ -d=c(i_{1})\\i_{1}=\frac{-d}{c}$

Then $i_{1}=i_{1}$

Finally :

$\frac{-b}{a}=\frac{-d}{c} \\\frac{b}{a}=\frac{d}{c} \\ad=bc$

y = ax + b and y = cx + d have the same x-intercept ⇔ad=bc

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3 years ago

Which product will be positive?<br> -6 × 4<br> -6 × (-7)<br> -3 × 8<br> 6 × (-4)

masya89 [10]

Answer:

-6x(-7)( negative and negative = positive)

Step-by-step explanation:

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otez555 [7]

Answer:

Step-by-step explanation:

N/-2=-15

N= -15 times -2

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tester [92]

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gregori [183]

Answer:

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Step-by-step explanation:

we have

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4 years ago

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