Please help me out!!!

Mathematics

1 answer:

yawa3891 [41]4 years ago

4 0

The "translation 3 units to the right" produces (5+3, 7), or (8,7). Reflecting that over the x-axis results in (8, -7).

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Simplify the expression and explain each step.<br><br><br> 4(3x+2)-2

navik [9.2K]

4(3X +2) -2=

12X + 6

4x3x= 12 and 4x2=8 and 8-2=6

Is in the end the answer is 12X +6

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3 years ago

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Given the replacement set {2, 3, 4, 5}, solve 7x – 4 = 3x + 8.

Ludmilka [50]

7x-4=3x+ 8

-3x of both sides 4x-4=8
plus 4 to both sides 4x=12

12 divide by 4 = 3
hopeful that helps

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4 years ago

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In a right triangle ABC,right angled at B,the ratio of AB to AC is 1:root 2.Find the value of 2tanA/1-tan square A

Helen [10]

Since we know that ratio of AB : AC is 1 : √2, then we can more or less use those values for the sides, check the picture below.

so we're really looking for tan(2A). Let's bear in mind that tan²(θ) is just another way to write [ tan(θ) ]².

$\bf \stackrel{\textit{Double Angle Identities}}{tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}}\\\\
-------------------------------\\\\
tan(2A)=\cfrac{2tan(A)}{1-tan^2(A)}\implies \cfrac{2\left( \sqrt{2} \right)}{1-(\sqrt{2})^2}\implies \cfrac{2\sqrt{2}}{1-2}\implies -2\sqrt{2}$

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4 years ago

What is the answer to this? PLEASE HELP!

Leno4ka [110]

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For this one I would add the measurements for the 3 shins and subtract it from 1.2.
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Then...
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So...
The fourth board has the width of .235 cm.

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3 years ago