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aleksandr82 [10.1K]
4 years ago
10

3 + 2y/8 = 1 - y/5 please answer quick i will give brainliest

Mathematics
1 answer:
TEA [102]4 years ago
5 0

Answer: y = - 40/9

Step-by-step explanation:

3 + 2y / 8 = 1 - y / 5

120 + 10y = 40 - 8y

10y + 8y = 40 - 120

18y = -80

y = -40 /9

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The answer is 93 years old.
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3 years ago
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The human eye contains approximately 9.1 x 10^7 rod cells and 4.5 x 10^6 cone cells . Samuel subtracts 9.1-4.5 and says there ar
Paul [167]

Samuel is incorrect because he didn't subtract the power of the numbers.

<h3>How many more rod cells are there?</h3>

The number of rod and cone cells in the human eye is written in scientific notation. Scientific notation is used in expressing large numbers in smaller numbers. To write a number in scientific notation, the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10. For example, 1 x 10² is equivalent to 100

(9.1 x 10^7) - (4.5 x 10^6)

= (9.1 - 4.5) x 10^(7 - 6)

4.6 x 10 = 46

To learn more about scientific notation, please check: brainly.com/question/25334755

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6 0
2 years ago
When a liquid turns into a solid, which of the following also changes?
schepotkina [342]

Answer:

D. Energy.

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8 0
3 years ago
An ant looks to the top of a bulding at an angle of elevation of 32°. The ant then walks an additional 66 feet from the edge of
Keith_Richards [23]
Let the height of the building be x. Let the initial distance of the ant from the building be y, then
tan 32 = x/y
y = x/tan 32 . . . . . . . . (1)
tan 22 = x/(y + 66)
y tan 22 + 66 tan 22 = x
y = (x - 66 tan 22)/tan 22 . . . . . . . . (2)
Equating (1) and (2), we have
x/tan 32 = (x - 66 tan 22)/tan 22
x tan 22 = x tan 32 - 66 tan 22 (tan 32)
x(tan 32 - tan 22) = 66 tan 22 (tan 32)
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8 0
3 years ago
One angle of a triangle has a measure of 66. The measure of the third angle is 57 more than half the measure of the second angle
Daniel [21]

So let's say that the second angle is x.

Then we can say that the third angle is \frac{1}{2}x+57.

So then we have three angles:

1) 66°

2) x°

3) (\frac{1}{2}x+57)°

So then we can add these together and solve for x by setting it equal to the total degrees left in the triangle after subtracting the known angle:

x+\frac{1}{2}x+57=114

\frac{3}{2}x+57=114

\frac{3}{2}x=57

\frac{2}{3}*\frac{3}{2}x=57*\frac{2}{3}

x=\frac{114}{3}  =38

So now we know that the measure of the second angle is 38°. So then we can use this value to solve for the third angle:

\frac{1}{2}(38) +57=76

So the values of the angles are:

1) 66°

2) 38°

3) 76°

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3 years ago
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