3 years ago

Help needed! (will mark as brainliest)

Mathematics

2 answers:

Delicious77 [7]3 years ago

5 0

Answer:

d. 2x-5y=-5

Step-by-step explanation:

I checked my answers with the screenshots.

Aloiza [94]3 years ago

4 0

Answer:

it is the 3rd option

Step-by-step explanation:

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Mary is twice as old as Helen’s age, If 8 is subtracted from Helen’s Age and 4 is added to Mary Age? Mary will be 4 times as old

erik [133]

Answer:

set mary is x years old, and helen is y years old.

first sentence:x=2y

second one:4(y-8)=x+4

bring x=2y in 4(y-8)=x+4

=>4y-32=2y+4

=>2y=36

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3 years ago

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$\sin(2x) = 2\sin(x)\cos(x)$

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3 years ago

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irina1246 [14]

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