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2 years ago

I have no idea how to solve this

Mathematics

1 answer:

Anvisha [2.4K]2 years ago

3 0

Answer:

awww neither do i

Step-by-step explanation:

lol I got a 72 on my matb homework going to go jump off a cliff

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The coffee Lily likes is composed of 97.3% water and 2.7% cocoa. The coffee John likes is composed of 96% water and 4% cocoa. Ho

mestny [16]

30 ounces of the coffee John likes consists of

$0.96\cdot30=28.8$ ounces of water
$0.04\cdot30=1.2$ ounces of cocoa

To this mixture we're adding $x$ ounces of water, so that the new mix has a total volume of $30+x$ ounces and matches the composition of the coffee Lily likes. This means it would consist of

$0.973\cdot(30+x)=28.8+x$ ounces of water
$0.027\cdot(30+x)=1.2$ ounces of cocoa (same amount of cocoa as before because pure water is being added)

Solve for $x$ :

$0.973(30+x)=28.8+x\implies29.12+0.973x=28.8+x$

$\implies0.39=0.027x$

$\implies x\approx14.4$

###

Just to confirm: the new mixture consists of

$28.8+14.4=43.2$ ounces of water
$1.2+0=1.2$ ounces of cocoa

giving a total volume of $43.2+1.2=44.4$ ounces of coffee, and $\dfrac{43.2}{44.4}\approx0.973$ , as required.

4 0

3 years ago

Cho A =

FromTheMoon [43]

Step-by-step explanation:

uyghouihh9uhu9h9h79h97gouhh,jhkjhouhouhkjhkugiyt75r75r76f8ug87

5 0

2 years ago

To be clear i don't want the flat out answer i want help on how to solve it .

liberstina [14]

The answer to the problem is as follows:

<span>So each thing separate by a positive, negative, multiplication or division sign. so here it would be 8h is one term and 15t is the second term so there are two.
</span>
I hope my answer has come to your help. God bless and have a nice day ahead!

4 0

3 years ago

5 x 10^-4 + 9.5 x 10^-4

Basile [38]

Answer:

290

Step-by-step explanation:

I ask google it says 290

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3 years ago

Julian needs to spend at least seven hours each week practicing the drums. He has already practiced five and one third hours thi

nirvana33 [79]

Answer:

70 min

Step-by-step explanation:

If we take the hypothesis that by the end of the fifth day he had 5h20min drums practice then the remaining time to get to 7 hours practice time would be 1h40min.

7 0

3 years ago