What’s the anwer I do not understand this

Mathematics

1 answer:

romanna [79]2 years ago

8 0

Answer:

Step-by-step explanation:

So you have to get 2/3 of 128 grams which is about 85 grams. It says she has to mix 64 grams so she went over.

Hope this helps :)

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on Monday Steven read 9 pages of his new book to finish the first chapter on Tuesday he needs to read double the number of pages

GarryVolchara [31]

Answer=18 pages

Steven read 9 pages on Monday. If he needs to read DOUBLE that amount on Tuesday, then we need to take the number of pages he read on Monday and times it by 2.

9*2=18pages

Steven needs to read 18 pages on Tuesday.

**Remember that Double is the same as 'two times more', or 2x more...

3 0

3 years ago

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Harry decides he wants to save money. He already has 5 USD in his savings account and decides he will add 3.500USD per week.

enot [183]

Answer:

S = 3.500t

11 weeks, because in 11 weeks he will have saved up 38.500, + the 5 he has saved equals 43.500.

Step-by-step explanation:

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2 years ago

If y-3x=9, 7x+y=25, what is the value of x and y?

lianna [129]

$\bold{\rm{Given}}\text{ : If y - 3x = 9, 7x + y = 25, what is the value of x and y}?$

$\bold{\rm{Solution}} \text{: We'll solve this by substitution method}$

$\dashrightarrow y - 3x = 9 \\ \\ \dashrightarrow \boxed{y = 9 + 3x } \qquad .. \sf eq(1)$

$\text{we got the value of y now getting the value of x}$

$\looparrowright 7x + y = 25 \\ \\ \looparrowright 7x = 25 - y \\ \\ \looparrowright \boxed{x = \frac{25 - y}{7}} \qquad .. \sf eq(2)$

$\text{Now, putting y = 9 + 3x in eq(2)}$

$\hookrightarrow x = \frac{25 - y}{7} \\ \\ \hookrightarrow x = \frac{25 - 9 + 3x}{7} \\ \\ \hookrightarrow 7x = 25 - 9 + 3x \\ \\ \hookrightarrow 7x - 3x = 16 \\ \\ \hookrightarrow 4x = 16 \\ \\ \hookrightarrow x = \frac{16}{4} \\ \\ \star \quad \boxed{ \green{ \frak{ x = 4}}}$