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Schach [20]
3 years ago
5

What is 2/5 of 20 5/8? please show work

Mathematics
1 answer:
adoni [48]3 years ago
7 0

Answer: 33/4 or 8 1/4


Step-by-step explanation:

20 5/8 is 165/8 as an improper fraction.

"of" means multiplication.

Therefore, the equation would be 2/5 times 165/8, which is 33/4 or 8 1/4.


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Which number is greater?<br><br> A. 3.33 x 10^7<br> B. 2.34 x 10^5
Zina [86]

Answer:

3.33times 10^7 because when it is possible to substract 2.24times10^5 from it

5 0
3 years ago
Read 2 more answers
In isosceles right triangle ABC, point is on hypotenuse \overline{BC} such that \overline{AD} is an altitude of \triangle ABC an
Dmitriy789 [7]

Answer:

Area of triangle is 25.

Step-by-step explanation:

We have been given an isosceles right triangle

Isosceles triangle is the triangle having two sides equal.

Figure is shown in attachment

By Pythagoras theorem

BC^2=AC^2+AB^2

AD is altitude which divides the triangle into two parts

DC=5 implies BC =10 since D equally divides BC

Let AC=a implies AB=a being Isosceles

On substituting the values in the Pythagoras theorem:

10^2=a^2+a^2

100=2a^2

\Rightarrow a^2=50

\Rightarrow a=\pm5\sqrt{2}

WE can find area of right triangle by considering height AB and AD

Area of triangle ABC is:

\frac{1}{2}\cdot BC\cdot AD     (1)

\Rightarrow \frac{1}{2}\cdot 10\cdot AD

And other method of area of triangle is:

\frac{1}{2}\cdot AB\cdot BC       (2)

Equating (1) and (2) we get:

\frac{1}{2}\cdot 10\cdot AD=\frac{1}{2}\cdot a\cdot a

\Rightarrow AD=\frac{a^2}{10}

\Rightarrow AD=\frac{50}{10}=5

Using area of triangle is: \frac{1}{2}\cdot BC\cdot AD

Now, the area of triangle ABC=\frac{1}{2}\cdot 5\cdot 10

\Rightarrow 25



4 0
3 years ago
Find the length of the hypotenuse of a right triangle with legs of 4 and 3. A).5 B).6 C).7 D).8
iogann1982 [59]

4×4=16

3×3=9

16+9=25

\sqrt{25}

=5

ans =5

4 0
3 years ago
when you reverse the digits in a certain two-diget number you increase it value by 27. What is the number if the sum of its digi
Fynjy0 [20]
The number is = 10x+y
if reverse the digits, the number is: 10y+x
The sum fo its digits is =  x+y=5
I suggest this system of equations:
(10y+x)-(10x+y)=27    ⇒9y-9x=27
x+y=5
We can solve this system of equations by equaliztion method
x=5-y

9y-9(5-y)=27
9y-45+9y=27
18y=27+45
18y=72
y=72/18
y=4

x=5-y
x=5-4=1

The number is: 10x+y=10(1)+4=14

Answer: the number is 14
3 0
2 years ago
Read 2 more answers
Which equation best represents the relationship between x and y in the graph?
kicyunya [14]

Answer:

y = 3x + 3 is the answer tour welcome

3 0
2 years ago
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