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2 years ago

Find the sign of each of the following numbers a b c and if

Mathematics

1 answer:

wel2 years ago

4 0

Answer:

numbers ABC sign each following find formula 

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What is the sign of sum and product

Tasya [4]

Answer:

Look below

Step-by-step explanation:

Sigma (summation) and Pi (product) notation are used in mathematics to indicate repeated addition or multiplication

$\pi$

Hope this helps

3 0

3 years ago

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

You rent an apartment that costs

saul85 [17]

You need to multiply the two numbers. Or you can use long addition.

4 0

3 years ago

Read 2 more answers

Evaluate b – 2a – c for a = –3, b = 9, and c = –6.

telo118 [61]

b – 2a – c
= 9 - 2(-3) - (-6)
= 9 + 6 + 6
= 21

answer
21

3 0

3 years ago

Read 2 more answers

What is the volume of 6f and 7ft and 9fr

NeX [460]

The volume is 378 ft³. Hope this helps! Good luck.

3 0

3 years ago