Help me solve for the right one ? I need help

Mathematics

1 answer:

astra-53 [7]3 years ago

8 0

Answer:

it should be B correct me if I'm rong

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Two percent of Jennies skin cells were burned when she escaped from a fire. If

andreev551 [17]

$1.813*10^{12}$ cells of Jennies skin were not burned.

Step-by-step explanation:

Given,

Burned skin cells = $3.7*10^{10}$

This represents 2% of total skin cells.

Let,

x represents the total number of skin cells.

2% of x = $3.7*10^{10}$

$\frac{2}{100}x=3.7*10^{10}\\\\0.02x=3.7*10^{10}$

Dividing both sides by 0.02

$\frac{0.02x}{0.02}=\frac{3.7*10^{10}}{0.02}\\\\x=1.85*10^{12}$

Number of not burned cells = Total - burned

Number of not burned cells = $1.85*10^{12}-3.7*10^{10}$

Number of not burned cells = $1.813*10^{12}$

$1.813*10^{12}$ cells of Jennies skin were not burned.

Keywords: percentage, division

Learn more about division at:

#LearnwithBrainly

5 0

4 years ago

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What is the probability of spinning b

miss Akunina [59]

Answer:

45%

Step-by-step explanation:

It is 45% because is 1/4 of the circle

6 0

3 years ago

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What are the variables if PT= 2x, TR= y+4, QT= x+2, TS=y

Brilliant_brown [7]

The missing aspect of this question is shown in the attached image, which is that the letters correspond to vertices of a parallelogram.

A key feature of the parallelogram is that the diagonals bisect each other, therefore:

PT = TR
QT = TS

With this information we can now plug in the equations and solve for the variables x and y.

PT = TR
2x = y+4
y = 2x - 4

QT = TS
x + 2 = y

We now have two equations for the variable y. With this we can solve for x.

2x - 4 = x + 2
x = 6

y = x + 2
y = 6 + 2
y = 8

Once we solved for the variable x, we simply placed that value back into one of the previous equations and solved for y. The results are x = 6, y = 8.