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3 years ago

4/5 divided by 2/1 plz help asap

Mathematics

2 answers:

topjm [15]3 years ago

8 0

Answer:

2/5

Step-by-step explanation:

First write down: 4/5 divided by 2/1

Second turn it into multiplication using the steps Keep change flip: 4/5 x 1/2

That equals 4/10 and you simplify that to 2/5

Hope this helped! Pls mark me brainlist

Harman [31]3 years ago

4 0

4/5 divided by 2/1 is 2/5.

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Triangle abc has vertices located at a( 0, 2), b (2,5), and c (-1,7). find the length of each side of the triangle

lapo4ka [179]

$ab=\sqrt{(0-2)^{2}+(2-5)^{2}}=\boxed{\sqrt{13}}\\\\bc=\sqrt{(2-(-1))^{2}+(5-7)^{2}}=\boxed{\sqrt{13}}\\\\ac=\sqrt{(0-(-1))^{2}+(2-7)^{2}}=\boxed{\sqrt{26}}$

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2 years ago

There are 18 students wearing jeans. There are 25 students in the class. Mike says that 70% of the class is wearing jeans. Do yo

lisabon 2012 [21]

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Step-by-step explanation:

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3 years ago

Sara has a stack of 8 plates, each plate is 0.5 inches tall and she is trying to wrap them as a gift.

AlekseyPX

Answer:

The plates will not fit into the box.

Step-by-step explanation:

Each plate is 0.5 inches tall; therefore, the stack of 8 plates will have a height of $0.5in*8 = 4inches$ .

Also, the diameter of the largest plate is 10 inches or has a radius of 5 inches, which matches the radius of the cylindrical box; therefore, we know that the stack of plates can fit into the base area of the cylindrical box.

What we want to figure out now is the height of the cylindrical box <em>to see if it is greater than or equal to 4 inches</em>—<em>the height of the stack of plates. </em>

The volume of a cylinder is $\pi R^2h$ , and since for our cylindrical box the volume is 150 cubic inches; therefore,

$\pi R^2h = 150in^3$

putting in $R = 5in$ and solving for height $h$ we get

$h = \dfrac{150in^3}{\pi (5)^2}$

$h = 1.91\: inches$ ,

which is not greater than 4 inches, which means the plates will not fit into the box since the height of the stack is greater than the height of the box.

5 0

4 years ago

Help with this please

Alex_Xolod [135]

<h2>Given:-</h2>

y = 2x + 50

x = 5

So,

y = 2(5) + 50

y = 10 + 50

y = 60

Hence, option B, y = 60, is correct.

<h2>Hope it helps...</h2>

3 0

3 years ago

PLEASE PLEASE HELP GIVING BRAINALIST AND EXTRA POINTS FOR FIRST PERSON

Tcecarenko [31]

<h2>Answer:</h2><h3>For each of these, we use PEMDAS (parenthesis, exponent, multiplication, division, addition, subtraction, IN THAT ORDER).</h3>

#11:

$2(6k - 1) = -32\\\\12k - 2 = -32\\\\12k = -30\\\\k = -2.5$

#12:

$15 = -3(x - 1)\\\\15 = -3x + 3\\\\12 = -3x\\\\-4 = x$

#13:

$7x + 6x - 3x - 45 = 15x\\\\10x - 45 = 15x\\\\-45 = 5x\\\\-9 = x$

#14:

$3x + 5 = \frac{1}{2}(4x + 28)\\\\3x + 5 = 2x + 14\\\\x + 5 = 14\\\\x = 11$

#15:

$10 - (x + 5) = 2x + 14\\\\10 - x - 5 = 2x + 14\\\\5 - x = 2x + 14\\\\5 - 3x = 14\\\\-3x = 9\\\\x = -3$

#16:

$\frac{2}{5}(10x - 15) = -14\\\\4x - 6 = -14\\\\4x = -8\\\\x = -2$

*Note: You can check my work by pluging in each result I got for x back into the equation and solve. If both numbers on each side of the equal sign match, that means I'm right.

3 0

3 years ago