All categories

3 years ago

how can you fluently add, subtract, mulitply, and divide decimals? how can you multiply and divide fractions?

Mathematics

1 answer:

Natasha2012 [34]3 years ago

8 0

Answer/Step-by-step explanation:

How can you fluently add, subtract, multiply, and divide decimals?

To add or subtract decimals:

1.Write the numbers vertically with the decimals lined up (if the number is a whole number then the decimal goes on the right end of the number)

2.Add zeros to make sure there are the same number of digits in each number.

3.Add or subtract as normal.

How can you multiply and divide fractions?

Dividing two fractions is the same as multiplying the first fraction by the reciprocal of the second fraction. The first step to dividing fractions is to find the reciprocal (reverse the numerator and denominator) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators.

Hope this help :3

You might be interested in

B(t)=4*e^0.8t, How many hours will it take for the population to grow to 400?

Mariulka [41]

Given: "B(t)=4*e^0.8t, How many hours will it take for the population to grow to 400?" Set B(t) = 400. Then:

400=4*e^(0.8t), or

100 = e^(0.8t)

Take the natural log of both sides, obtaining
ln 100
ln 100 = 0.8t. Then t = ----------- = 5.76 hours.
0.8

7 0

3 years ago

Which is a valid prediction about the continuous function f(x)?

goblinko [34]

I believe the answer is C. third choice

f(x) ≥ 0 over the interval [–1, 1].

6 0

3 years ago

Read 2 more answers

On a coordinate plane, 2 straight lines are shown. The first solid line has a positive slope and goes through (0, negative 2) an

ExtremeBDS [4]

Answer:

$y\geq x-2$

$x+2y$

Step-by-step explanation:

step 1

Find the equation of the first inequality

Find the equation of the first solid line

we have the ordered pairs

(0,-2) and (2,0)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{0+2}{2-0}$

$m=\frac{2}{2}$

$m=1$

The equation in slope intercept form is equal to

$y=mx+b$

we have

$m=1$

$b=-2$ ---> the y-intercept is given

substitute

$y=x-2$

Remember that

Everything to the left of the solid line is shaded

The inequality is

$y\geq x-2$

step 2

Find the equation of the second inequality

Find the equation of the second dashed line

we have the ordered pairs

(0,2) and (4,0)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

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

$m=\frac{-2}{4}$

$m=-\frac{1}{2}$

The equation in slope intercept form is equal to

$y=mx+b$

we have

$m=-\frac{1}{2}$

$b=2$ ---> the y-intercept is given

substitute

$y=-\frac{1}{2}x+2$

Remember that

Everything below and to the left of the line is shaded

The inequality is

$y$

Rewrite

Multiply by 2 both sides

$2y$

$x+2y$

therefore

The system of inequalities is

$y\geq x-2$

$x+2y$

see the attached figure to better understand the problem

5 0

3 years ago

Read 2 more answers

So I keep getting 188 or 88 but I got the reminder right I’m not sure what I did wrong

9966 [12]

Answer:

Step-by-step explanation:

7619 / 7

= 1088 remainder 3.

3 0

3 years ago

Are all sides of the right angle have sides that are parallel

nydimaria [60]

-- The two sides of a right angle intersect and make the angle.
So do the sides of any other angle. So they can't be parallel.

-- No two sides of a right triangle ... or any other triangle ...can be parallel.

8 0

3 years ago

how can you fluently add, subtract, mulitply, and divide decimals? how can you multiply and divide fractions?​

how can you fluently add, subtract, mulitply, and divide decimals? how can you multiply and divide fractions?