Mathematics: Please helppppp. i don’t get it and the teacher doesn’t explain it.

Please helppppp. i don’t get it and the teacher - id10491742, stefaniethibodeaux

Ответ:

ilarheab

17.03.2022

Mathematics

1. 22

2. 12

3. Sorry, I'm unable to solve for 3.

4. 5

Step-by-step explanation:

AB is congruent to AD so let's solve the equation:

$\: \: \: \: \: \: \: \: \: \: \: 8x - 2 = 6x + 4 \\ \frac{ - 6x \: \: \: \: \: \: \: \: \: \: \: = - 6x}{2x - 2 = 4} \\ \frac{ \: \: \: \: \: \: \: \: \: \: + 2 = + 2}{ \frac{2x}{2} = \frac{6}{2} } \\ x = 3$

☆Now we plug in for AD.

$AD \\ 6x + 4 \\ 6(3) + 4 \\ 18 + 4 \\ 22$

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m<CED is on a right angle, that angle equal 90 degrees.

$7x + 6 = 90 \\ \frac{ \: \: \: \: \: \: - 6 = - 6}{ \frac{7x}{7} = \frac{84}{7} } \\ x = 12$

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#4. You can do the Pythagorean theorem

${a}^{2} + {b}^{2} = {c}^{2} \\ {4}^{2} + {3}^{2} = {c}^{2} \\ {16} + 9 = {c}^{2} \\ \sqrt{25} = {c}^{2} \\ 5 = c$

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Ответ:

leo4687

14.04.2020

Mathematics

Step-by-step explanation:

2cm per 35 min

1 cm per 17.5 min

17.5 minutes per cm

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Please helppppp. i don’t get it and the teacher doesn’t explain it.

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