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Alex787 [66]
3 years ago
5

Find the decimal notation for 21/25

Mathematics
2 answers:
8_murik_8 [283]3 years ago
6 0
Well 25x4=100 so 21x4=84 so 84 over 100 is the same as .84 =D hope it helps
SVEN [57.7K]3 years ago
5 0
A fraction means division.  21/25 means  21  divided by  25. 
When you actually do the division, the quotient is the decimal
equivalent of the fraction.

When you divide  21  by  25, you get  <em>0.84</em> .
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Kayla paints a bookcase she uses 1 5/6 cups of paint on the outside of the bookcase and 3/8 cup of paint on the inside. How many
olchik [2.2K]

Answer: Kayla used 2 5/24 cups of paint all together.

Step-by-step explanation:

Kayla paints a bookcase by using

1 5/6 cups of paint on the outside of the bookcase. Converting 1 5/6 cups to improper fraction, it becomes 11/6 cups of paint.

She also used 3/8 cup of paint on the inside.

Therefore, the total number of cups of paint that Kayla used all together would be

11/6 + 3/8 = (44 + 9)/24 = 53/24 cups of paint. Converting to mixed fraction, it becomes

2 5/24 cups of paint

3 0
3 years ago
The perimeter of a square is 60 inches. Find the area.
Marianna [84]

Answer 225

Step-by-step explanation:

60/4=15. 15*15= 225

5 0
3 years ago
Which best explains why this triangle is or is not a right triangle?
olchik [2.2K]

Answer:

D

Step-by-step explanation:

If it is a right triangle, by pythagorous theorem, 39^2 = 36^2 + 15^2

or, 36^2 + 15^2 - 39^2 = 0

6 0
3 years ago
Read 2 more answers
Help please?????????????
N76 [4]

Answer:

Step-by-step explanation:

The given triangle ABC is an obtuse triangle because one of its angles it greater than 90 degrees. The sum of the angles in a triangle is 180 degrees. This means that

Angle A + Angle B + Angle C = 180 degrees

Looking at the triangle,

Angle A = 30 degrees

Angle C = 20 degrees

Therefore,

30 + angle B + 20 = 180

Angle B + 50 = 180

Subtracting 50 from the left hand side and the right hand side of the equation, it becomes

Angle B + 50 - 50 = 180 - 50

Angle B = 130 degrees

5 0
3 years ago
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The function f(x)= x^2 is similar to g(x)= -3(x-5)^2+4. Describe the transformations. Show Graphs.
Bingel [31]

Answer:

The reflected across x-axis, stretched vertically by factor 3 and shifted 5 units right and 4 units up.

Step-by-step explanation:

The parent function is

f(x)=x^2

The given function is

f(x)=-3(x-5)^2+4               ... (1)

The transformations of a quadratic function is defined as

f(x)=k(x+a)^2+b                .... (2)

Where, k is vertical stretch or compression factor, a is horizontal shift and b is vertical shift.

If |k|>1, then graph stretch vertically if 0<|k|<1, then graph compressed vertically. If k<0 or negative, then the graph reflected across x-axis.

If a>0, then the graph shifts a units left and if a<0, then the graph shifts a units right.

If b>0, then the graph shifts b units up and if b<0, then the graph shifts b units down.

From (1) and (2) it is clear that

k=-3,a=-5,b=4

k=-3<0, it means graph reflected across x-axis. |k|=3>1, so graph stretched vertically by factor 3.

a=-5<0, so the graph shifts 5 units right.

b=4>0, so the graph shifts 4 units up.

Therefore the reflected across x-axis, stretched vertically by factor 3 and shifted 5 units right and 4 units up.

7 0
3 years ago
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