Use the number line to show and explain why 4/10 ÷ 2 and 4/10 × 1/2 both equal 2/10

Answers

Answer 1

Step-by-step explanation:

When you divide by a number, you basically are multiplying by the reciprocal

The reciprocal of 2 is 1/2

4/10 ÷ 2 = 4/10 × 1/2 = 2/10

4/10 × 1/2 = 2/10

Using a number line,

Start at 4/10 and move down by 2 until you reach 0

Start at 4/10 and move up by 1/2 from 0 until you reach 4/10

(Count the number of humps)

Both will be the same


Related Questions

find the volume of a prism 5 feet tall whose base is a right triangle with leg lengths 3/2 feet and 9 feet

Answers

Answer:

33.75

Step-by-step explanation:

The volume of a right triangle prism is 33.75 cubic feet which is 5 feet tall.

It is given that the prism is 5 feet tall whose base is a right triangle with leg lengths of 3/2 feet and 9 feet.

It is required to find the volume of the prism.

What is volume?

It is defined as a three-dimensional space enclosed by an object or thing.

We have 5 feet tall prism ie.

height of the prism h = 5 feet

and base b = 3/2 feet

and length = 9 feet

We know the volume of the right triangle prism is given by:

[tex]\rm V = \frac{b\times h\times l }{2}[/tex]

Putting the values of b, h, and l, we get:

[tex]\rm V =\frac{\frac{3}{2} \times 5\times 9}{2}[/tex][tex]\rm V = \frac{3 \times 5\times 9}{2\times2} \Rightarrow \frac{135}{4}[/tex]

V = 33.75 cubic feets

Thus, the volume of a right triangle prism is 33.75 cubic feet which is 5 feet tall.

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The diameter of a circle is 18 m. Find its area in terms of \piπ.

Answers

Answer:A≈254.47m²

Step-by-step explanation:

Step-by-step explanation:

A=pi(r^

[tex]\pi {r}^{2} \\ \\ diameter \: is \: 18 \: meters \\ to \: find \: the \: radius \\ divide \: diameter \: by \: 2 \\ since \: the \: radius \: is \: \\ half \: the \: diameter18 \div 2 = 9 \: meters \\ \\ \pi {r}^{2} \\ \pi( {9}^{2} ) \\ \pi(81) \\ \\ area = 81\pi[/tex]

The wholesale price of a special speaker was $64. It was then marked up 85% and sold online. What was the online price?

Answers

$118.4 because 64 • 0.85 = 54.4, 64+ 54.4 = 118.4

Please help me this is my final!!!

Answers

Answer:

it is a, or n=15

Step-by-step explanation:

Answer:

n=15 (No it's not cap)

Step-by-step explanation:

if the interior angle is 156 then to find the exterior angle we just do 180-156 which equals 24

360/24=15 so there are 15 sides

Points A,B and C are circle P
What is the M ACB?

Answers

I’m not sure try 280

plz help me brainless

Answers

Answer:

[tex]\frac{1}{4}[/tex]

Step-by-step explanation:

Answer:

1/4

Step-by-step explanation:

Given function:

3/4 take away 2/4

Subtract the two fraction:

[tex]\frac{3}{4}-\frac{2}{4}=\frac{1}{4}[/tex]

Therefore, the fraction that is left would be 1/4..

4) Select one of your desserts.
Desserte ice cream Price: 3.00
This dessert hasn't been selling well so.
you have decided to decrease the price
by $0.50. What is the percent of
change?

Answers

$3.50 would be the total

Answer:

Step-by-step explanation:

see calculate bro 3 = 100%

1.5 is 50%

0.50 is then 25%

please help PLEASE WILL GIVE BRAINS
A fan has five equally spaced blades. Suppose you line up two fans directly on top of each other. What is the least number of degrees that you can rotate the top fan so that the two fans are perfectly aligned again?

A fan has 5 equally spaced blades.
A. 120°
B. 60°
C. 90°
D. 72°

Answers

90° : )




the answer is 90 degrees :)

20 POINTS

On the news yesterday, the weather forecaster’s rainfall prediction was 20% off. If 2.5 inches of rain actually fell today, what are the two rainfall predictions that could have been made during the weather forecast?

Giving brainliest to the BEST EXPLAINED answer. All answers that are irrelevant to the question will be reported and removed.

Middle School Math

Answers

There are 2 solutions to this problem. One is that 2.5 is 120% of a number and that 2.5 is 80% of a number.
2.5=1.2x
x=25/12
2.5=0.8x
x=25/8

Yolanda reads 7 1/2 chapters in 3 1/8 hours. What is the unit rate in chapters per hour? Write your answer as a fraction or a mixed number in simplest form.

Answers

Answer:2.4 chapters

Step-by-step explanation:

If each of the numbers in the following data set were multiplied by 26, what
would be the new median of the data set?
14, 20, 18, 58, 71, 36
O A. 728
OB. 520
O C. 936
O D. 676

Answers

Answer:

Step-by-step explanation:

728 answer is C

I need to know how to find the measure of angle a.

Answers

Answer:

90°

Step-by-step explanation:

We need expressions for the measures of the three interior angles. Then we add them and set the sum equal to 180. Then we solve for x. Finally, we use the value of x in x + 100 to find the measure of angle A.

Let's first find an expression for each angle.

Angle A: m<A = x + 100

Bottom left angle: The interior angle is vertical to the angle measuring x + 60, so the interior angle also measures x + 60.

Bottom right angle: Let's call the measure of the interior angle y. y and the angle measuring 140° are supplementary, so y + 140 = 180; y = 40.

Now that we have expressions for the three interior angle measures, we add them and set the equal to 180.

(x + 100) + (x + 60) + 40 = 180

x + 100 + x + 60 + 40 = 180

2x + 200 = 180

2x = -20

x = -10

The measure of angle A is x + 100, and x = -10

m<A = x + 100 = -10 + 100 = 90

Answer: 90°

Assessment started: undefined.
Item 1
Which situation does this equation model?

12 × 6 = n


Maria completed 12 cartwheels. This is 6 more cartwheels than James completed. James completed n cartwheels.

Sarah's dog weighs 12 pounds. Jordan's dog weighs 6 times as much as Sarah's dog. Jordan's dog weighs n pounds.

Jada swam 12 laps in the pool. This is 6 times as many laps as Juan swam. Juan swam n laps.

Kiki collected 12 seashells on the beach. Min collected 6 more seashells than Kiki collected. Min collected n seashells.

Answers

The 3rd One. 12(jadas laps)*6(Juans laps). =n(72)

Use the Distributive Property to simplify the expression. PLS HURRRY I GIVE BRAINLEST AWNSER
11(4b-3)

Answers

Answer:

Step-by-step explanation:

44b-33

Someone help and please make sure it’s right :)

Answers

Answer:

15x+8=180-97 , solve for x and u shall get the answer

Answer:5

Step-by-step explanation:

Since 97 and the other angle together make a straight line, you can find the angle by doing 180-97 which is 83. Then you 15x+8=83. 15x=75. x=5.

Solve for m.

6 - 2
6 + 2
2 - 6

Answers

I think it is 6+2 I could be wrong

Answer:

[tex]m=6+2\sqrt{5}[/tex]

Step-by-step explanation:

Not sure how to do this, the lesson didn't explain this well.

Answers

since x can cancel out u are left with 3y=-3 which means y prolly equals 1

plug it in

2x+(1)=5 & 2(1)=2x-8

then u will find x which is 2

x=2, y=1

(2,1)

Please help!
I really need it asap

Answers

I’m pretty sure your answer is E

HELP ASAP PLS ME AND MY TEACHER ARE ON A 1 ON 1 CALL

Answers

MIGHT BE WRONG BUT I THINK ITS 5.742Step-by-step explanation:

Anyone mind helping ?

Answers

i think it’s 7 seconds
It’s 14 seconds trust me

Determine the maximum or minimum value of the following quadratic function. LaTeX: f\left(x\right)=-3\left(x+5\right)^2-1f ( x ) = − 3 ( x + 5 ) 2 − 1

Answers

Answer:

Step-by-step explanation:

[tex]y=-3(x^2+10x+25)-1\\ \\ y=-3x^2-30x-76\\ \\ dy=-6x-30\\ \\ d^2y=-6\\ \\ \text{Since the second derivative is always negative, when the first derivative is equal to zero the function will be at a global maximum.}\\ \\ dy=0=-6x-30\\ \\ x=-5\\ \\ f(-5)=-1\\ \\ \text{So the global maximum occurs at the point (-5,-1)[/tex]

DESPERATE WILL GIVE BRAINLIST AND THANKS
Use the data to create a scatter plot.



Weight vs. Stretch Distance
PointMove
UndoRedoReset
Stretch distance (cm)Weight (N)
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
0


Stretch distance (cm)

Weight (Newtons)

2.0

1

3.5

2

4.0

2

4.5

3

5.5

5

6.0

6

7.5

8

9.0

9


(plz show the graph picture with the answer)

Answers

Answer: What you must do for this case is to graph each of the ordered pairs that you have in the table to obtain the dispersion chart. Note that in your table you have eight ordered pairs, therefore, your scatter chart must have eight pairs.

Step-by-step explanation:

need help cuz i don't know what in doingggg

Answers

i think the answer is 24 because
It would be 27/-10+7 = 24
I’d say the answer is 24, don’t take me for my word tho

Use the figure below to solve for the value of x.

Answers

Given:

A figure of a right triangle and an altitude form the right angle vertex to hypotenuse.

To find:

The value of x.

Solution:

From the given figure, it is clear that the altitude divides the hypotenuse in two segments x and 8.

Length of altitude = 18

If an altitude divide the hypotenuse in 2 segments, then according to the geometric mean theorem, the length of the altitude is the geometric mean of two segments of hypotenuse.

By using geometric mean theorem,  we get

[tex]18=\sqrt{x\times 8}[/tex]            [tex][\because \text{Geometric mean of }a,b,c:b=\sqrt{ac}][/tex]

[tex]18^2=8x[/tex]

[tex]324=8x[/tex]

Divide both sides by 8.

[tex]\dfrac{324}{8}=x[/tex]

[tex]40.5=x[/tex]

Therefore, the value of x is 40.5.

Plz Help me!!!
will mark brainliest!!

Answers

Answer:

3x² * (6x² + 4x - 8) = 18x⁴ + 12x³ - 24x²

2x * (9x³ + 6x² - 12x) = 18x⁴ + 12x³ - 24x²

* (18x² + 12x - 24) = 18x⁴ + 12x³ - 24x²

6x² * (3x² + 2x - 4) = 18x⁴ + 12x³ - 24x²

Step-by-step explanatation:

Let's set unknown variables as y (and y₁, y₂, etc)

Question 1:

y *  (6x² + 4x - 8) = 18x⁴ + 12x³ - 24x²

So, divide both sides by (6x² + 4x - 8)

y = 3x²

Question 2:

2x * (9x^y₁ + y₂*x^y₃ - y₄*x) = 18x⁴ + 12x³ - 24x² '

Divide both sides by 2x.

(9x^y₁ + y₂*x^y₃ - y₄*x) = 9x³ + 6x² -12x

y₁ = 3, y₂ = 6, y₃ = 2, y₄ = 12

Question 3:

x^y * (18x² + 12x - 24) = 18x⁴ + 12x³ - 24x²

Divide both sides by (18x² + 12x - 24)

x^y =

Question 4:

y₁  * x^y₂ * (3x² + 2x - 4) = 18x⁴ + 12x³ - 24x²

Divide both sides by (3x² + 2x - 4)

y₁  * x^y₂ = 6x²

y₁ = 6, y₂ = 2

I hope this helps! Feel free to ask any questions!

Marla used 17 gallons of water to wash 6 dogs. She used the same amount of water to wash each dog . How much water did marla use to wash the dogs?

Answers

Answer:

17 gallons.

Step-by-step explanation:

was this a trick question

Answer:

2.83 3 repeating

Step-by-step explanation:

A certain man has a negative balance of P250 in his back account b) suppose he deposits P300 in his back account ,what is the current balance in his account?​

Answers

Answer: $50

Step-by-step explanation:

From the question, we are informed that a certain man has a negative balance of P250 in his back account and that he then deposits P300 in his back account.

The current balance in his account? will then be gotten by adding the negative balance of $250 to the $300 deposited. This will be:

= -$250 + $300

= $50

Therefore, his current balance will be $50

Evaluate the logarithm.
log 0.00001

Answers

The correct answer is -5.

The logarithm base 10 of 0.00001 is -5.

The logarithm of 0.00001 can be evaluated using the base 10 logarithm, commonly denoted as log10.

In this case, log10(0.00001) is asking "What power of 10 gives us 0.00001?"

To understand this, let's rewrite 0.00001 in scientific notation.

0.00001 can be expressed as 1 x 10⁻⁵, where -5 is the exponent.

Therefore, log10(0.00001) = -5.

This means that 10 raised to the power of -5 equals 0.00001.

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If you spent 58 minutes doing English homework and 47 minutes doing math homework how much more time did you need to spend doing English homework?

Answers

Answer:

58 minutes

Step-by-step explanation:

Please brainliest me

There are 11 minutes more time to spend doing English homework.

What is mean by Subtraction?

Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.

Given that;

If you spent 58 minutes doing English homework and 47 minutes doing math homework.

Now,

Since, The time for doing English homework = 58 minutes

And, The time for doing Math homework = 47 minutes

So, The time more to spend doing English homework = 58 - 47

                                                                                   = 11 minutes

Thus, There are 11 minutes more time to spend doing English homework.

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PLEASE HELP ME SOLVE THIS!
GIVING ALL MY POINTS!

Answers

It’s the first box goes to the 3rd missing thing and the second goes to the 4th and the 3rd goes to the 1st and 4th goes to the 2nd I think if that makes sense
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