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3 years ago

9

I need answers. How can you add subtract and multiply with decimals???

2 answers:

mafiozo [28]3 years ago

8 0

Answer:

Subtract each column, starting on the right and working left. If the top number is smaller than the bottom number, borrow from the top number at the left. Place the decimal point in the answer directly below the decimal points in the terms. Check the answer by adding.

Step-by-step explanation:

weqwewe [10]3 years ago

5 0

Subtract each column, starting on the right and working left. If the top number is smaller than the bottom number, borrow from the top number at the left. Place the decimal point in the answer directly below the decimal points in the terms. Check the answer by adding.

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vekshin1

Answer:

Option (1) will be the answer.

Step-by-step explanation:

Coordinates of the points A and B lying on the line f are (0, 2) and (2, 0) respectively.

Slope of the line f,

$m_{1}=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m_{1}=\frac{2-0}{0-2}$

$m_{1}=-1$

After dilation of line f by a scale factor of 2, coordinates of A' and B' will be,

Rule for dilation,

(x, y) → (kx, ky)

Where k = scale factor

A(0, 2) → A'(0, 4)

B(2, 0) → B'(4, 0)

Slope of line f',

$m_{2}=\frac{0-4}{4-0}$

$m_{2}=-1$

Since, $m_{1}=m_{2}=-1$

Therefore, both the lines f and f' will be parallel.

Option (1) will be the answer.

6 0

4 years ago

What is the value of 3/7 x 5/21

larisa86 [58]

Answer:

5/49

Step-by-step explanation:

3/7 x 5/21=15/147=5/49

6 0

3 years ago

Read 2 more answers

Write and simplify the equation you would use to solve the problem below.

Taya2010 [7]

12s + 5 = 77
12s = 77 - 5 = 72
s = 72/12
s = 6 ...//

Ans = C ... 12x + 5 = 77 ...

7 0

3 years ago

Helppppppp mathhhhhhhhhh

serious [3.7K]

That's how I got the answer. Hope u can understand my working

8 0

3 years ago

1.If a number is chosen at random from the integers 5 to 25 inclusive , find the probability that the number is a multiple of 5

Drupady [299]

I'll do problem 1 to get you started.

set A = multiples of 3 between 5 and 25 = {6, 9, 12, 15, 18, 21, 24}

there are 7 items in set A, so we can say n(A) = 7

set B = multiples of 5 between 5 and 25 = {5,10,15,20,25}

Here we have n(B) = 5

set C = multiples of 3 and 5, between 5 and 25 = {15}

n(C) = 1 which we can rewrite as n(A and B) = 1.

-----------------------------------------

To summarize so far,

n(A) = 7
n(B) = 5
n(A and B) = 1

From those three facts, then we can say,

n(A or B) = n(A) + n(B) - n(A and B)

n(A or B) = 7 + 5 - 1

n(A or B) = 11

There are 11 values between 5 and 25 that are multiples of 5, multiples of 3, or both.

Those 11 values are: {5, 6, 9, 10, 12, 15, 18, 20, 21, 24, 25}

This is out of 25-5+1 = 21 values overall which are in the set {5,6,7,...,24,25}

So we have 11 values we want out of 21 overall, which leads to the probability 11/21

Final Answer: 11/21

6 0

3 years ago

Read 2 more answers