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kirill [66]
2 years ago
14

3 1/4 - 1 3/5 | please help !!

Mathematics
1 answer:
Luba_88 [7]2 years ago
6 0

Answer:

Step-by-step explanation:

Step: 1: Convert mixed fraction to improepr fraction.

Step: 2 : Find the LCM of 4 , 5 = 20

Step 3: Find equivalent fractions with denominator as 20

Step 4: Now subtract.

3\dfrac{1}{4}-1\dfrac{3}{5}=\dfrac{13}{4}-\dfrac{8}{5}

             \sf = \dfrac{13*5}{4*5}-\dfrac{8*4}{5*4}\\\\\\     = \dfrac{65}{20}-\dfrac{32}{20}\\\\\\    = \dfrac{65-32}{20}\\\\\\    = \dfrac{33}{20}\\\\  \\    = 1 \dfrac{13}{20}

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The hypotenuse of a right triangle is 10 ft long. the shorter leg is 2ft shorter than the longer leg. find the side lengths of t
Gwar [14]
Since we have two possible pieces of information and 2 items to solve for, we know this is a system of equations.
Our first piece of information is that our shorter leg (s) is 2 feet shorter than our longer leg (l). This can be written as s=l-2.
Our second piece of information is that using the Pythagorean theorem that our shorter leg squared plus our longer leg squared is equal to our hypotenuse squared. This can be represented by s^2+l^2=10^2. Now we can solve.
We have already isolated for s in our first equation, so we can substitute l-2 in.
(l-2)^2+l^2=10^2
l-2+l=10
2l-2=10
2l=12
l=6
Now we can substitute in for s in our simpler equation
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We now know that using our knowledge of systems of equations, the side lengths of this right angle triangle are 6 and 4.
5 0
3 years ago
Plz, answer this question I need help. I'll mark you as brainliest and give you 5 stars.
jeka57 [31]

Answer:

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Step-by-step explanation:

8 0
4 years ago
A triangle has a side lengths of 4cm,3cm, and 4cm. Classify its as acute, obtuse, or right.
DIA [1.3K]

When given 3 triangle sides, to determine if the triangle is acute, right or obtuse:

1) Square all 3 sides.

4, 3, 4, 

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2) Sum the squares of the 2 shortest sides.

16 + 9 = 25


3) Compare this sum to the square of the 3rd side.

25 > 16

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So, it is an acute triangle.

Source:
http://www.1728.org/triantest.htm


4 0
3 years ago
I just need to see how to solve for d, I have zero idea how to rearrange the equation. If you could show your work it would be m
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Answer:

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Step-by-step explanation:

V = pi r^2 d

Divide each side by pi r^2

V/(pi r^2)  = pi r^2 d/(pi r^2)

V/(pi r^2)  = d

Then substitute the values into the equation to find d

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LMNP is a rectangle. Find the value of x and the length of each diagonal.
Marta_Voda [28]

Answer:

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Step-by-step explanation:

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