All categories

3 years ago

Compare and contrast the methods you can use to multiply a whole number and a decimal.

1 answer:

8 0

Here are the methods you can use when multiplying a whole number and a decimal. In multiplying a whole number, you can just do the normal multiplication process and the product would still be a whole number. In multiplying a decimal, it becomes different because the decimal points will affect the product. In multiplying decimal, each time we multiply by a power of 10, the decimal point is moved one place to the right. When multiplying a decimal by a whole number, placement of the decimal point is very important. When a given number has 2 decimal places, the product must also have two decimal places. Hope this explanation helps.

You might be interested in

I'm horrible at this so can I please get help, the rest says "solve for a. a=

Inessa05 [86]

Answer:

a = $\sqrt{63}$

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

a² + 9² = 12²

a² + 81 = 144 ( subtract 81 from both sides )

a² = 63 ( take square root of both sides )

a = $\sqrt{63}$

8 0

3 years ago

What is the slope of the line?

Katyanochek1 [597]

Answer:

Step-by-step explanation:

slope (k) is the rise over run of the line

a way of finding the slope if you have two dots of the line is:

$k \: = \frac{y2 - y2}{x2 - x2}$

here the dots that belong to the line that you can most easily see are:

A(-6,0)

B(0,6)

by inserting the values into the euquation you get:

$\frac{6 - 0}{0 - ( - 6)} = \frac{6}{6} = 1$

good luck with your maths solving

6 0

2 years ago

#5 10 pounds of Cat Food A costs $6.50.

slava [35]

Answer:

Step-by-step explanation:

6 is less than 14 obviously.

6 0

3 years ago

Violet knows that her subscription rate for the basic tier of cable television increased from $18.20 to $19.50 at some point dur

mezya [45]

The 2 equations are
18.20x+19.50y=230.10
and
x+y=12
where x is the months of original cost and y is months for new cost. Since you know that you paid for one year (12 months) you can make the second equation. Then you want to substitute the first equations x by making the second equation
x=(12-y)
18.20(12-y)+19.50y=230.10
218.40-18.20y+19.50y=230.10
1.30y=11.70
y=9
so that means you had the original rate for 3 months and the new one for 9 months

7 0

3 years ago

Given the equation −4x + 10 = 2, which order of operations completely solves for x?

hammer [34]

Hi there!

Answer:
The answer is "Subtract 10, then divide by −4"

Explanation:
To solve a linear equation (for x) we need to isolate the variable (x). First we need to bring the variables to the left side (in this case, it is already on the correct place). Next up is bringing all the integers to the right side. Therefore, we must first subtract 10. Our final step is dividing by the number that is placed in front of x (in this case divide by −4)

Solving the equation:
−4x + 10 = 2
First subtract 10 (from both sides of the equation)

−4x = −8
Divide by −4

x = −8 / −4 = 2
Therefore, the solution is x = 2

I hope this anwer helps you!

4 0

3 years ago