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tekilochka [14]
3 years ago
11

Books, and then you have 44+45x=?

Mathematics
1 answer:
Zinaida [17]3 years ago
7 0

Answer:

45x=-44

x=-44/45

Step-by-step explanation:

is this a free question?

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A metallugarist has an alloy with 6% titanium and an alloy with 20% titanium. He needs 100 grams of an alloy with 13% titanium.
dsp73
\bf \begin{array}{lccclllll}
&amount(g)&\textit{\% of titanium}&\textit{grams of titanium}\\
&-----&-----&-------\\
\textit{6\% alloy}&x&0.06&0.06\cdot  x\\
\textit{20\% alloy}&y&0.2&0.2\cdot  y\\
----&-----&-----&-----\\
mixture&100&0.13&100\cdot 0.13\to 13
\end{array}

so.. .whatever those amounts are, of "x" and "y", for the mixture,
they must add up to 100 grams, or x + y = 100

and the titanium percentage of that sum, must yield a 13 grams of titanium on those 100 grams

thus \bf \begin{cases}
x+y=100\to y=\boxed{100-x}
\\\\
0.06x+0.2\boxed{y}=13
\end{cases}

do the substitution, and solve for "x",

what's "y" amount?  well, y = 100 - x
4 0
3 years ago
Find m∠7 if m∠8 = 119°<br> m∠7 = ???
natka813 [3]

Answer:

119

Step-by-step explanation:

it will be the same as 8 because they are adjacent..

8 0
3 years ago
mr george has a bank balance of 42 dollar at the start of the mouth.after he depostite 6 dollar the new balance is
Lubov Fominskaja [6]

Answer:

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Step-by-step explanation:

If Mr. George starts with 42, and adds 6, his new balance should equal 48 because you add the two numbers.

7 0
3 years ago
Read 2 more answers
***WILL MARK BRAINLIEST*** Write in Scientific Notation! #3
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1. 9.6 x 10^5
2. 2.2 x 10^-4
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In a game the player wins if he rolls a 4 on a number cube. If the number cube is rolled 24 times,then what is a reasonable pred
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The number for unsuccesful rolls would be 20/24. This is because the probability for winning is 4/24, so the compliment is 20/24.
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3 years ago
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