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4 years ago

How do u add and subtract decimals ?

Mathematics

2 answers:

Nikolay [14]4 years ago

7 0

Write down the numbers, one under the other, with the decimal points lined up. Put in zeros so the numbers have the same length, Then add using column addition, remembering to put the decimal point in the answer. Do the same for subtracting.

Anarel [89]4 years ago

5 0

<h2>line up your decimals its like normal math but its decimals just make sure to line them up :)) (O-03)</h2><h2> </h2>

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In parallelogram DEFG, DH = x + 3, HF = 3y, GH = 4x – 5, and HE = 2y + 3. Find the values of x and y.

marissa [1.9K]

Here, DH = HF

x+3 = 3y

x = 3y-3 ----(I)

GH = HE

4x-5 = 2y+3

4x = 2y+8

Substitute value of x,

4(3y-3) = 2y+8

12y-12 = 2y+8

12y-2y = 12+8

10y = 20

y = 2

Now, substitute it in equation 1,

x = 3(2)-3

x = 6-3 = 3

So, your final answer is x=3 & y=2

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3 years ago

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Enter the coordinates of the vertex of the function f(x) = x2 + 4x - 7

elixir [45]

Given the equation of the function:

$f(x)=x^2+4x-7$

The given function represents a parabola

We will make a complete square to find the coordinates of the vertex

The coefficient of x = 4

Half the coefficient of x = 2

Square it give = 4

So, we will add and subtract 4

$\begin{gathered} f(x)=x^2+4x+4-4-7 \\ f(x)=(x^2+4x+4)-11 \\ f(x)=(x+2)^2-11 \end{gathered}$

Compare the last equation with the vertex form of the parabola

$f(x)=(x-h)^2+k$

So, h = -2, k = -11

So, the answer will be the coordinates of the vertex = (-2, -11)

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Compare the graphs of y = |x + 2| and y = -|x + 1|. Which statement is true? a.The value of coefficient a is +1 in both equation

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C.Their vertices lie on the x-axis.

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What is 4 3/4 of rupee 1

devlian [24]

Answer:

$\frac{19}{4}=Rs 1$

$Rs. 1 = 100 paise$

$\frac{19}{4}=100 paise$

$4.75=100 paise$

$\frac{4.75}{100}=paise$

$0.0475=paise$

i hope this will help you :)

=1,075

Therefore,

\frac{43}{4} =1,075

Hope it helps you!!!

Plz Mark me as a brailiest

Step-by-step explanation:

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