Dan's business loses $9 each day. Which equation would be used to show how much money Dan's business has lost in a week?

Mathematics

1 answer:

MArishka [77]3 years ago

3 0

A. Because it shows negative making it less confusing showing that he loses 63$ per week.

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What's 5 - the square root of x + 10 = the square root of 7 - x

Tcecarenko [31]

$\bf 5-\sqrt{x+10}=\sqrt{7-x}\impliedby \textit{squaring both sides}
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(5-\sqrt{x+10})^2=(\sqrt{7-x})^2
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(5^2)-10\sqrt{x+10}+(x+10)=7-x
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35-10\sqrt{x+10}+x=7-x\implies 28-10\sqrt{x+10}+2x=0
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\begin{array}{llll}
squaring\ both\\
sides\ again
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3 years ago

All members of our painting team paint at the same rate. If $20$ members can paint a $4800$ square foot wall in $36$ minutes, th

Softa [21]

Answer:

It takes 70 minutes for 9 team members (painting 60 sq ft per minute) to paint a 4200 sq ft wall.

Step-by-step explanation:

According to the situation the calculation is shown below:-

= $\frac{4800}{20}$

= 240 sq ft each member of the team in 36 minutes

= $\frac{240}{36}$

= 6.67 sq ft each member of the team within 1 minute

$= 6.67\times 9$

= 60 sq ft for every 9 team members in one minute

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= 70 minutes (or 1 hour and 10 minutes)

Hence, the 70 minutes is taken for 9 team members

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Fed [463]

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One by one, take each of the following sets of possible factors and mult. them out to determine whether the result equals 15x^2 - 44x - 36:

(5x - 9)(3x + 4)
(3x - 4)(5x + 9)
(5x - 18)(3x + 2)
(5x + 18)(3x - 2)

First one: use the "foil" method: (5x)(3x) + 20x - 27x - 36. This does not simplify to 15x^2 - 44x - 36 and so is not the correct choice. Go on to the second answer choice and continue this check.

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krek1111 [17]

Answer:

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Step-by-step explanation:

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