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Alex787 [66]
3 years ago
12

Math question - help due today

Mathematics
2 answers:
lora16 [44]3 years ago
8 0
The second line was wrong
Fantom [35]3 years ago
7 0

Answer:

His mistake was multiplying 12 by 4 instead of 1/4. He would instead need to divide 12 and 1/4 by 1/4.

Step-by-step explanation:

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The density of lead is 11.4g/cm^3 at 25 degrees C. Calculate the volume occupied by 25.0g of lead
ElenaW [278]

Answer:

2.193 cm³

Step-by-step explanation:

density is mass divided by volume:

density =  \frac{mass}{volume}

you can manipulate the formula by multiplying with volume:

density \times volume = mass

then dividing by density:

volume =  \frac{mass}{density}

in this case:

volume =  \frac{25g}{11.4 \frac{g}{cm}  }  = 2.193 { \: cm}^{3}

6 0
1 year ago
160% of 30 what is the number???
shtirl [24]
160% of 30 equals 48.
5 0
3 years ago
Read 2 more answers
1. What is the slope of a line that is parallel to the line represented by the equation y=-2/5x + 4/5
lbvjy [14]

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . .

We are asked to find the slope of the line that is parallel to the line \star~\mathrm{y=-\cfrac{2}{5}x+\cfrac{4}{5}}.

\triangle~\fbox{\bf{KEY:}}

  • Parallel lines have the same slope.

So let's first determine the slope of the first line, and then let's find the slope of the line that's parallel to it.

\circ\!\!\!\star\mathcal{HINT:}

  • The slope is the coefficient of x.

So the slope is

\star~\mathrm{-\cfrac{2}{5}}.

Can you guess the slope of the line that is parallel to the first line?

That's right! The slope is...

\star~\mathrm{-\cfrac{2}{5}}

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

4 0
2 years ago
Simplify:<br>2341 base 5- 3124 base 5 + 2142 base 5<br><br><br>​
Jlenok [28]

Answer:

o sry I don't no iamm really sry for that

4 0
3 years ago
A beverage manufacturer is mixing up a 30% tomato juice blend. The manufacturer already
Mariulka [41]

Answer:

1110 liters

Step-by-step explanation:

Let x = amount of 26% juice.

Amount of tomato juice:

740 liters of 36% juice contains 0.36(740) = 266.4 liters of tomato juice

x liters of 26% juice contains 0.26x liters of tomato juice

The result will be x + 740 liters of the juice blend at a concentration of 30%. It contains 0.3(x + 740) liters of tomato juice.

266.4 + 0.26x = 0.3(x + 740)

266.4 + 0.26x = 0.3x + 222

-0.04x = -44.4

x = 1110

Answer: 1110 liters

5 0
3 years ago
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