REASONING Do you always need to regroup when
multiplying 3-digit or 4-digit numbers? Why or why not?

Answers

Answer 1

Answer:

You don't need to because multiplication is commutative.


Related Questions

The distance between two towns is 120 kilometers. There are approximately 8 kilometers in 5 miles. How many miles are between the two towns?

Answers

Answer:

15 miles

Step-by-step explanation:

You know that there are 8 kilometres in 5 miles, so:

120/8=15

The line plot shows the heights of the players on a basketball team, in inches.

Part B

he next year, a player who is
71
inches tall is replaced by a player who is
73
inches tall. Otherwise the team remains the same. Is
74
an outlier the next year? Explain.

Answers

A: based on the given dot plot are: statements B, D, and E.

B:  A. No. 74 is not an outlier because it is not different from the other heights in the dot plot.

What is a Dot Plot?

In a dot plot, frequencies of each data point is represented as dots.

Part A:

Thus, in the dot plot given:

Players of 70 1/2 in. tall and above are 7 in number. This is half of the number of the total players. (option B is true).

Players with height of 69 1/2 in. (3 players) are more than those that are 70 in. tall (1). (option A is not true).

One of the player is 68 1/2. (option C is not true).

Four of the players are 74 in. tall (option D is true).

The team has 6 different heights as shown in the dot plot given (option E is correct).

Therefore, the statements that are correct based on the given dot plot are: statements B, D, and E.

Part B:

If a player of 73 in. tall replaces a player of 71 in, tall, 73 is close to 74.

Therefore, we can conclude that: A. No. 74 is not an outlier because it is not different from the otehr heights in the dot plot.

Learn more about dot plots on:

https://brainly.com/question/25957672

The cost of two hats and three bandanas is $114.25. The cost of five hats and two bandanas is $166.00. What is the cost of one hat?
(A) 18.75
(B) $21.75

(C) $22.50

(D) $24.50

(E) $51.75

Answers

Answer:

Step-by-step explanation:

If x = 4cosa and y = 5tana, find (x^2/16) - (y^2/25)​

Answers

[tex]x = 4 \cos(a) [/tex]

[tex] \frac{x}{4} = \cos(a) \\ [/tex]

[tex]( { \frac{x}{4} })^{2} = ({ \cos(a) })^{2} \\ [/tex]

[tex] \frac{ {x}^{2} }{16} = {cos}^{2} (a) \\ [/tex]

_____________________________________________

[tex]y = 5 \tan(a) [/tex]

[tex] \frac{y}{5} = \tan(a) \\ [/tex]

[tex]( { \frac{y}{5} })^{2} = ( { \tan(a) })^{2} \\ [/tex]

[tex] \frac{ {y}^{2} }{25} = {tan}^{2} (a) \\ [/tex]

_____________________________________________

Thus ;

[tex] \frac{ {x}^{2} }{16} - \frac{ {y}^{2} }{25} = \\ [/tex]

[tex] {cos}^{2} (a) - {tan}^{2} (a)[/tex]

answer? i give vrainlist

Answers

Answer:

3 I think

Step-by-step explanation:

1/3 opposite is 3/1 or 3

At a dance school, 18 students attend class on Tuesday. Six of those students are boys. What is the ratio of girls
to total students attending class on Tuesday?

Answers

Answer:

= 12 : 18

Step-by-step explanation:

• 18 - 6 = 12

• girls = 12

• total students = 18

• girls to total students

= 12 : 18

Answer:

12:18

Step-by-step explanation:

4. What is the difference between 34.062 And 2.87

M. 31.192
P. 31.292
R. 32.192
S. 33.775​​

Answers

Answer:

m. 31.192

explanation 34.062-2.87

3. If a = 2, b = -5 and c = 3, determine the value of b(a)+c​

Answers

-5(2) +3
-5*2=-10
-10+3=-7

The answer is -7

f(x) =2x^3 + 3x^2 - 7x + 2 g(x) = 2x-5 find (f+g)(x)

Answers

Answer:

Step-by-step explanation:

Remark

The way this is written, the notation is directing you to add the right hand sides of the two given polynomials.

Givens

f(x) = 2x^3 + 3x^2 + 7x + 2

g(x) =                        2x - 5                Add

Solution and Answer

Answer: (f + g)(x) = 2x^3 + 3x^2 + 9x -3

Be careful with that - 5. The result is -5 + 2 = - 3                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

Answer: It's (f+g)(x)=2x^3+3x^2-5x+3

Step-by-step explanation: I just did it.

Please help asap!
Which of the graphs has the greatest rate of change?
A) Graph A
B) Graph B
C) Graph C
D) Graph D

Answers

Answer:

B) Graph B

Step-by-step explanation:

B, the steepest one.

Where do 2x - y = 4 and 4x + y = 9 intersect?

Answers

Answer: They intersect at [tex](2\frac{1}{6}, \frac{1}{3} )[/tex]

Step-by-step explanation:

We can solve this system of equations through elimination

Add (4x+y=9) with (2x-y=4)

[tex]4x+y=9\\+2x-y=4\\=\\6x+0=13[/tex]

Now that y is canceled out we can solve for x

[tex]6x=13\\\frac{6x}{6}=\frac{13}{6} \\x=2\frac{1}{6}[/tex]

Now sub back x into one of the original equations to find the value of y

[tex]4(2\frac{1}{6} )+y=9\\8\frac{2}{3} +y=9\\8\frac{2}{3}-8\frac{2}{3}+y=9-8\frac{2}{3}\\y=\frac{1}{3}[/tex]

10 points need this answer ASAP

Answers

Answer:

C

Step-by-step explanation:

Y=2(-1)+3

y=-2+3

y=1

true

Solve the equation for x.
-2x = 14
Enter the number that belongs in the green box.
x = [?]

Answers

Get unknowns on one side and know on other side.

Divide both sides by -2
X= -7

Which congruence theorem can be used to prove △WXS ≅ △YZS?

Triangles W X S and Y Z S are connected at point S. Angles W X S and S Z Y are right angles. Sides X S and S Z are congruent.

SSS
ASA
SAS
HL

Answers

Answer:

SSS

Step-by-step explanation:

XS=SZ

WS=SY

WX=ZY

I hope this is useful.

The congruence theorem that can be used to prove △WXS ≅ △YZS is SSS. ; option A.

Which are congruence theorems?

Congruence theorems are theorems which are used to prove congruency in triangles.

The congruence theorems include:

SSSASASASRHS

In the given triangle;

XS = SZ WS = SY WX = ZY

Therefore, the congruence theorem that can be used to prove △WXS ≅ △YZS is SSS.

Learn more about congruence theorems at: https://brainly.com/question/2102943

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Origami paper is always in the shape of a square. If you take the top corner of either side of a 9 x 11-inch piece of paper and fold it to the lower opposite side and trim off the excess paper, this creates the square that we need. Then fold the top corner to the opposite corner to create a diagonal, which is a typical first step to most origami designs. What are the dimensions of your square? What is the length of the diagonal? Write your answer in exact and decimal form.

Answers

Answer:

Dimensions are nine by nine, the diagonal is the square root of 162.

Step-by-step explanation:

The resulting square will have the same width as before, with a height to match, (9,9) The diagonal can be found using the pathagyreon theorom.

9^2 + 9^2 = x^2.

The dimensions of the square would be nine by nine, the diagonal is the square root of 162.

The square will have the same width as before, with a height to match, (9,9)

The diagonal can be found using the Pythagorean theory.

9^2 + 9^2 = x^2.

What is the Pythagorean theorem?

This theorem states that the square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.

What is the Pythagorean theorem and what is it used for?

The Pythagorean Theorem is a useful tool that shows how the sum of the areas of three intersecting squares can determine the side lengths of a right triangle.

Learn more about Pythagorean Theorem here:https://brainly.com/question/231802

#SPJ2

The area of a circle with radius r is given by the formula A = (pi)r^2. If a circle has area 4(pi) square inches, what is the radius?​

Answers

Answer:

[tex]\displaystyle 2\:in.[/tex]

Step-by-step explanation:

[tex]\displaystyle {\pi}r^2 = A \\ \\ \frac{{\pi}r^2}{\pi} = \frac{4\pi}{\pi} \hookrightarrow \sqrt{4} = \sqrt{r^2} \\ \\ \boxed{2 = r}[/tex]

I am joyous to assist you at any time.

find the missing length of a rectangle with a width of 7b^3 and an area of 77a^8b^8​

Answers

Answer:

Step-by-step explanation:

Which expression is equivalent to StartFraction 5 y cubed Over (5 y) Superscript negative 2 Baseline EndFraction?
y5
y6
125y3
125y5

Answers

Answer:

125y3

Step-by-step explanation:

12x5=y

y3/2 = y26 - 5 =y

Answer:

D should be right

Step-by-step explanation:

What is the solution to 3x/4 =7/3

Answers

Answer:

[tex]x=\frac{28}{9}[/tex]

Step-by-step explanation:

[tex]\frac{3x}{4} =\frac{7}{4}[/tex]

[tex]\Longleftrightarrow \left( 3x\right) \times 3=7\times 4[/tex]

[tex]\Longleftrightarrow 9x=28[/tex]

[tex]\Longleftrightarrow x=\frac{28}{9}[/tex]

i really need helps with this i dont understannd it

Answers

Answer:

A < C < B = 0.2 < 0.222 < 0.25

Step-by-step explanation:

the best way to do these least to greatest questions is to get them all in the same units so you can compare.

A = [tex]\sqrt{\frac{1}{25} }[/tex]which is [tex]\sqrt{0.04}[/tex] = 0.2

B= 1/4 = 0.25

c=0.22222222.....

now that they are in the same units we see A is the smallest, then C, and then B

Your food costs are $2,000.
Your total food sales are $8,500. What percent of your food sales do the food costs represent?

Answers

Answer:

23.53%

Step-by-step explanation:

Given :

food costs = $2,000total food sales = $8,500

Solving :

Food costs / Total Food Sales2000/85004/170.235323.53%

Help help ASAP math math

Answers

Answer:

-25

Step-by-step explanation:

f(-12) means x = -12

so you just plug it in the equation and solve for x

[tex]f(x) = 3(-12)+11\\f(x) = -36+11\\f(x) = -25[/tex]

What is the perimeter of a rectangle 5cm by 8cm?

Answers

Answer:26

Step-by-step explanation:

Use the volume formula to find the volume of the prism.
help!!

20 points!!

Answers

Answer:

B. 9 cubic units

Length×width×height

What number can be divided into 2 equal groups whit out a reminder

Answers

all even numbers

hope it really helps...!!!

Answer:

all even numbers. because when divisible by two there is no reminder

A pigpen is to be enclosed using 640 m of fencing along three of its sides, the fourth side being a barn. Determine the dimensions of the pen that will maximize the area (100 PTS + BRAINLIEST)

Answers

Answer:

[tex]W_{max}=320m\\ L_{max}=160m[/tex]

Step-by-step explanation:

Since we know we only have 640 feet of fence available, we know that L + W + L = 640, [tex]\implies [/tex] 2L + W = 640. This allows us to represent the width, W, in terms of L: W = 640 – 2L

Remember, the area of a rectangle is equal to the product of its width and length, therefore,

[tex]A_{\rm pigpen}=L(640-2L)\implies 640L-2L^2[/tex]

Notice that, quadratic has been vertically reflected, since the coefficient on the squared term is negative, so the graph will open downwards, and the vertex will be a maximum value for the area.

recall,

[tex]x_{max}=-b/2a[/tex][tex]f(x)_{max}=f(x_{max})[/tex]

Since our function is A(L)=640L-2L², we get

a=-2b=640

plug in the value of a and b into the first formula:

[tex]L_{max}=-(640)/2(-2)\implies 160 [/tex]

[tex]A(L)_{max}=640(160)-2(160)^2\implies 51200 [/tex]

hence,the dimensions of the pen that will maximize the area are L=160m and W=51200/160=320m

and we're done!

Answer:

width (x) = 160 m

length (y) = 320 m

(refer to the attached diagram)

Step-by-step explanation:

**see attached diagram**

Let x = width of the pig pen

Let y = length of the pig pen

(where length > width)

Given:

Fence = 640 m4th side is the barn

⇒ 2x + y = 640 m

⇒ y = 640 - 2x

Area of the pig pen = width × length

⇒ f(x) = xy

Substituting y for y = 640 - 2x:

⇒ f(x) = x(640 - 2x)

          = 640x - 2x²

Now we have a function for the area of the pig pen, to find the value of x that will maximize the area, differentiate the function:

⇒ f'(x) = 640 - 4x

Set it to zero and solve for x:

⇒ f'(x) = 0

⇒ 640 - 4x = 0

⇒ 640 = 4x

⇒ x = 160

Substitute the found value of x into y = 640 - 2x to find the length:

⇒ y = 640 - 2(160) = 320

Therefore, the dimensions of the pen that will maximize the area are:

width (x) = 160 mlength (y) = 320 m

HELP QUICKLY PLEASE
31. Tony is borrowing $10 from his mom every week for buying more toy cars for his Hot Wheels collection. How much money does he owe at the end of 7 weeks?

33. Linda borrowed $7 a day until she had borrowed a total of $56. For how many days did she borrow money?

34. The temperature increased 2o per hour for six hours. How many degrees did the temperature raise after six hours?

35. Max lost 24 pounds in 8 weeks on his new weight-loss plan. What was his average change in weight per week?

Answers

Answer:

the answer to 33 is 8 7×8=56 or 56÷7

how is 0.136 written as a fraction in simpilist form. is my answer correct?

Answers

Answer:

Yes you are

Step-by-step explanation:

case as) the repeating decimal is 36

Multiply x by a power of  , one that keeps the decimal part of the number the same:

Subtract  from

The repeating decimals should cancel out

solve for x

Divide by  both sides

Simplify

Divide by  both numerator and denominator

therefore

the answer case a) is

The fraction in easyiest form is

case b) the repeating decimal is 136

Let

Multiply x by a power of, one that keeps the decimal part of the number the same:

Subtract  from

The repeating decimals should cancel out

solve for x

Divide by  both sides

-----> irreducible

therefore

the answer case b) is

The fraction in simplest form is

136/999

A business owner wants a smaller version of the logo (picture attached) to be on the door of her business. The door is 7 feet tall and 3 feet wide There should be 6 inches of empty space to the left side of the logo and 6 inches of empty space on the right side of the logo.
Based off the logo (picture attached), what should be the total width, in feet, of the logo on the door?

Based off the logo (picture attached), what should be the total height, in feet, of the logo on the door?

Answers

Answer:

Clair,  since there isn't an attached picture, we don't know some info

Step-by-step explanation:

but here is how you can figure this out....

they tell use to give 6 inches on each side of the door,  so the total width of the logo can be 2 feet wide. Because the door is 3 feet wide.   Now use that to find the height.   find the height to width ratio of the logo,   so if the logo is 4 feet wide and 6 feet tall it's 6/4 or  1.5   ratio, use that and multiply by the 2 that we know the width can be on the door.    so  2*1.5 = 3.   the height of the logo would be 3 feet tall and 2 feet wide on the door.  see?

just find the ratio of the logo, and multiply that by 2  :)  to find the height on the door,  got it?

- At a school carnival, 8 out of 32 tickets sold were early-admission tickets. What
percentage of the tickets were early-admission tickets?

Answers

Answer:

25 Percent of tickets were early admission.

Step-by-step explanation:

We apply the percentage formula to solve this problem.

Total Ticket Amount * Percentage = Early tickets

We plug in our values

32 * x/100 = 8

Simplify

X=25

Answer:

25%

Step-by-step explanation:

8 out of 32 can be simplified to 1 early admission for every 4 tt (total tickets). 1/4 can be changed into a decimal which is .25, and  .25*100 is 25%

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