GEOMETRY ASSIGNMENT! HELP!!!! BRAINIEST ANSWER + POINTS!!! EXPLANATION IS NECESSARY! TY

Mathematics

1 answer:

shusha [124]3 years ago

4 0

Answer:

do you know what x is ? cause then I may be able to help you

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astronomers estimate that there are about 10 to the power of 11 galaxics in the universe and that each galexy contains about 10

nika2105 [10]

Answer:

10^22

Step-by-step explanation:

= (10^11)(10^11) -> the bases are the same, add the exponents

= 10^22

3 0

1 year ago

Solve the system, using any method. y = x + 2 and x + 2y = 25

Leni [432]

$Elimination\ method\\\\\left\{\begin{array}{ccc}y=x+2&|subtract\ "x"\ from\ both\ sides\\x+2y=25\end{array}\right\\+\left\{\begin{array}{ccc}-x+y=2\\x+2y=25\end{array}\right|add\ the\ equations\ sides\ \\\----------\\.\ \ \ \ \ \ \ 3y=27\ \ \ \ \ |divide\ both\ sides\ by\ 3\\.\ \ \ \ \ \ \ \ \ \ y=9\\\\subtitute\ y=9\ to\ second\ equation\\x+2(9)=25\\x+18=25\ \ \ \ \ \ \ |subtract\ 18\ from\ both\ sides\\x=7\\\\Solution:x=7\ and\ y=9\to(7;\ 9)$