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3 years ago

In rhombus ABCD, find the measure of angle A. A) 142° B) 52° C) 38° D) 218°

Mathematics

2 answers:

pshichka [43]3 years ago

5 0

38- b/c they are supplementary so 180-142=38

Pavel [41]3 years ago

5 0

It is C. 38 because determine the distance across a 24

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What are the solutions of the following system

noname [10]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}10x^2-y=48\\2y=16x^2+48&\text{subtracy}\ 16x^2\ \text{from both sides}\end{array}\right\\\\\left\{\begin{array}{ccc}10x^2-y=48\\-16x^2+2y=48&\text{divide both sides by 2}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x^2-y=48\\-8x^2+y=24\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x^2=72\qquad\text{divide both sides by 2}\\.\qquad x^2=36\to x=\pm\sqrt{36}\\.\qquad x=\pm6\\\\\text{Put the values of}\ x\ \text{to the second equation}$

$2y=16(\pm6)^2+48\\\\2y=16(36)+48\\2y=576+48\\2y=624\qquad\text{divide both sides by 2}\\y=312$

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andrew11 [14]

Answer:

12/14 x 100% = 85.7%

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Lesechka [4]

Answer:

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Step-by-step explanation:

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Answer:

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vodomira [7]

Answer:

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Step-by-step explanation:

use fractions for this think of it as 14/15x and 1/15x and x is 180 and solve from there

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