One way to divide decimal numbers is to use an equivalent expression.

Complete the statements below to explain one way to find 8.4 ÷ 2.1.

One Way To Divide Decimal Numbers Is To Use An Equivalent Expression.Complete The Statements Below To

Answers

Answer 1

Answer:

104

Step-by-step explanation:

To determine how much a decimal was multiplied, you need to find how many places the decimal moved.

In this case we can see the decimal moved once. How many times the decimal moved can be represented by the zeros in the number. So 10 = 1

100 = 2     1,000 = 3 and it keeps going.

So since the decimal moved 1 time, the answer to question one is 10

Now question 2.

Both 8.4 ÷ 2.1 and 84 ÷ 21 will give the exact same answer. It is just easier to solve. So solve which one is easier for you. I did 84 ÷ 21.

84 ÷ 21 = 4

We can verify our answer by multiplying the the divisor by the quotient

21 * 4 = 84

So 4 is the answer to question 2


Related Questions

After applying the distributive property to the expression 8(12-4) and then multiplying what will be the first term in the resulting subtraction expression

Answers

Answer:

The first term in the resulting subtraction expression is 96.

Step-by-step explanation:

Given - After applying the distributive property to the expression 8(12-4) and then multiplying

To find - What will be the first term in the resulting subtraction expression ?

Proof -

Given the expression is -

8( 12 - 4) = 8(12) - 8(4)

              = 96 - 32

⇒8( 12 - 4) = 96 - 32

So,

The first term in the resulting subtraction expression is 96.

Complete the statement. Round to the nearest hundredth if necessary.

6 lb = *blank* oz

Answers

Answer:

3 oz

Step-by-step explanation:

You have to divide 6 by 2 and you'll get the answer.

13 km

5 km
What is the length of the missing leg?

Answers

Pythagoras' theorem:
b^2 = c^2 - a^2
Substitute in the values:
b^2 = 13^2 - 12^2
b^2 = 25
Square root it
b = 5km
The answer is option B. 5km

1+1=

5
2
3
1

help me plz

Answers

Answer:

2 haha

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

I really need help ASAP and I only have 2 left of missing assignments on math and I am really bad at math and I am going to fail help me plzzzzz T^T continue


It's Homework #1: Odds

Answers

Answer:

1/2 ; 7/10

Step-by-step explanation:

1) we have ten letters A, E, I, O, U are five letters, so the odd can be expressed with the fraction 5/10, that can be simplified in 1/2

2) we have 7 non black parts in a total of ten parts, so the odd is 7/10  

PLEASE HELP!!! Order from least to Greatest!!!!

Answers

Answer:

just use a lest to greatest calculator

Step-by-step explanation:

Use a calculator to calculate all of them, I think the answer is B


HELP PLZZZZZZZZ
1 pt. 5) What is the y-intercept for the equation: 5x – 3y = 30
y = -10
y = 5
y = 30
y = -3

Answers

Answer:

Hi! The answer to your question is A. [tex]Y= -10[/tex]!

Step-by-step explanation:

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☆Brainliest is greatly appreciated!☆

Hope this helps!!!

Stay Safe!!

- Brooklynn Deka

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Answers

I) what percentage of students finished the race in less than 12 seconds:

number of students who finished before 12 seconds= 16

total number of students= 20

% = (16×100)20 = 80%

ii) B.3

Answer:

number 5 is D

and number 6 is C

What’s the length of a segment whose endpoints are (8,-6) and (-4,2)?

Answers

Answer:

Step-by-step explanation:

Imagine or draw a triangle with horizontal leg length 8 - (-4), or 12, and vertical leg length |-6 - 2|, or 8.  Use the Pythagorean Theorem to find the length of the hypotenuse:  

length of hypotenuse = +√(8² + 12²) = √208 = 4√13  (Answer A)

3c+6=18 how do you work this problem?

Answers

Answer:

c = 4

Step-by-step explanation:

Simplifying

3c + 6 = 18

Reorder the terms:

6 + 3c = 18

Solving

6 + 3c = 18

Solving for variable 'c'.

Move all terms containing c to the left, all other terms to the right.

Add '-6' to each side of the equation.

6 + -6 + 3c = 18 + -6

Combine like terms: 6 + -6 = 0

0 + 3c = 18 + -6

3c = 18 + -6

Combine like terms: 18 + -6 = 12

3c = 12

Divide each side by '3'.

c = 4

Simplifying

c = 4

Answer:

Step-by-step explanation:

subtract six from both sides

3c+6-6=18-6

simplify

3c=12

divide both sides by 3

3c/3 =12/3

c=4

ME NEED HELP HERE SO CONFUSED

Answers

Answer:

106°

Step-by-step explanation:

By exterior angle theorem:

[tex]m \angle \: 1 = 62 \degree + 44 \degree \\ \\ m \angle \: 1 = 106 \degree[/tex]

Step-by-step explanation:

Let the unknown angle in the triangle be x.

x + 44 + 62 = 180(sum of angles in a triangle)

x + 106 = 180

x = 180 - 106

x = 74

Angle 1 + x = 180 (Sum of angles on the same straight line)

angle 1 + 74 = 180

Angle 1 = 180 - 74

= 106

HeLp Me pLeAsE.
pLeAsE

Answers

Answer:

-7

Step-by-step explanation:

20 - 3 (-5 + 2)^2

20 - 3 (-3)^2

20 - 3(9)

20 - 27

-7

Which of the following has a value that is greater than 10,000 but less than 100,000?

Answers

Answer:

8.721 x 10^4

Step-by-step explanation:

hope this helps:)

help me please! i need help!

Answers

9514 1404 393

Answer:

  7u -63

Step-by-step explanation:

The distributive property says you can eliminate parentheses by applying the outside factor to each term inside parentheses.

  (u -9)7 = (u)(7) +(-9)(7) = 7u -63

Answer:

(u -9)7 = (u)(7) +(-9)(7) = 7u -63

What is the measure of <QPR? Explain how you know.​

Answers

Answer:

62  

Step-by-step explanation:

because the total angle is 180 and SPR is 118, so when you subtract 180 - 118 you get 62

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP ASAP

Answers

Answer:

70 degrees total degree 540

A basketball team visited a store. There are 12 team members in all. Each team member bought 2 wristbands and 1 headband. Let w represent the cost of a wristband and h represent the cost of a headband.​

Answers

Answer:

24 + 121

Step-by-step explanation:

No of members=12

w=wristband.

h=headband

Total wristbands:-

[tex]\\ \sf\longmapsto 12(2)=24[/tex]

The floor function maps any humber to the greatest integer that is _[blank] the number.
Which phrase correctly fills in the blank of the previous statement?

Answers

Answer:

Less Than or Equal to

Step-by-step explanation:

In mathematics and computer science, the floor and ceiling functions map a real number to the greatest preceding or the least succeeding integer, respectively. floor(x) : Returns the largest integer that is smaller than or equal to x (i.e : rounds downs the nearest integer).

Help pls

Find x
a(21)
b(27)
c(9)
d(18)​

Answers

9514 1404 393

Answer:

  a.  21

Step-by-step explanation:

The external part of the hypotenuse of the right triangle is shown. The full length of the hypotenuse is 9+20 = 29. The Pythagorean theorem can be used to find x.

  x^2 +20^2 = 29^2

  x^2 = 841 -400

  x = √441

  x = 21

__

Alternate solution

The diameter of the circle is 2·20 = 40 units, so the product of distances from the external vertex to the opposite sides of the circle along the secant is (9)(40+9). The product of the distances along the tangent is x·x. These two products are equal, so ...

  x^2 = 9(49)

  x = (√9)(√49) = 3·7

  x = 21

Which number has the greatest value?
A 7.8 x 10-3
B 1.3 x 10-6
C 5.5 x 10-3
D 9.5 x 10-2

Answers

Answer:

D 9.5 x 10^-2

Step-by-step explanation:

D becuase it is only 10^-2, the other ones are 10^-3, which is less than 10^-2

Anyone that is good at math, Mind giving me some help please?

Answers

Answer:

Add 3 after multiplying 1 and x.

Step-by-step explanation:

In this question we have to convert the given algebraic expression into a verbal expression.

Given algebraic expression is,

y = x + 3

Here, x is multiplied by 1

And 3 is added to x.

Therefore, verbal expression or statement will be,

Add 3 after multiplying 1 and x.

This rule defines the relationship between x and y.

Find the volume of the cone.
13 cm
r= 9 cm

Answers

Answer:

1,102.7cm³

Step-by-step explanation:

πr²[tex]\frac{h}{3}[/tex]

3.14x9^2x[tex]\frac{13}{3}[/tex]= 1102.7cm³

1102.7 to nearest tenth= 1102.7cm³

Mrs. Smith has a 34-pound bag of sugar to use for 6 cakes. How much sugar, in lbs, is used for each cake? Round your answer to the hundredths

Answers

Answer:

32

Step-by-step explanation:

yr

If the domain of the function f(x) = –2x^2 – 3 is {-1,2,5), then the range is
A. {-53-11, 5)
B. {1, 13,97)
C. {-13,-7, -1)
D. {-13,-11, 1)

Answers

Answer:

Answer A

Step-by-step explanation:

Evaluate f(x) = -2x^2 - 3 at each element in {-1, 2, 5}:

f(-1) = -2(-1)^2 - 3 = -5

f(2) = -11

f(5) = -53

These results match the outputs in Answer A.

The ceiling of Katie’s living room is a square that is 15 ft long on each side. To decorate for a party, she plans to hang crepe paper around the perimeter of the ceiling and then from each corner to the opposite corner. Katie can buy rolls that each contain 20 ft of crepe paper. What is the minimum number of rolls she should buy? Show your work.

Answers

Answer:

6 rolls because the total perimeter is 102 ft and five rolls is only 100 feet. So she needs 6 rolls.

Step-by-step explanation:

to find perimeter, add up all the side lengths.

so 15*4 (it's easier than 15+15+15...)

60 ft.

now we have to use Pythagorean's Theorum to find corner to corner.

so [tex]a^2+b^2=c^2[/tex]

we have a and b

[tex]15^2+15^2=c^2[/tex]

do the math...

225+225= 450

square root of 450=

21.213

double that because it's used twice (corner to corner and corner to corner)

42.426

now add it all up

42.426 + 60 = 102.426

we can round

102

20*5 = 100

so she needs 6

MY ORIGINAL ERROR WAS 5, BUT 5 TIMES 20 IS ONLY 80, SO THEREFORE 6 IS REQUIRED SO THERE IS ENOUGH TO COVER 102.

Answer:

Katie needs 6 crepe rolls.

Step-by-step explanation:

Hello!

Katie originally needed ~5.1 crepe rolls, but since its a question on how many rolls she should by, she should get 6.

There are a couple of steps in order to solve this.

Brainly is being weird- so I put an explanation to the problem in the image below- hope it helps!

Help me pleaseee I need help

Answers

I think it is b because probability of 2 is 1/6 then probability of 4 is 1/6. If you times them together 1/6x1/6 it will equal 1/36 so b

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Answers

The answer is c because
70 is your correct answer

PLEASE HELP i’m not sure!!!!!!!!!!!!

Answers

Answer: C

Explanation: They are the same exact shapes, the one on the right is slightly rotated and scaled smaller but other than that they are the most similar

Answer:

A

Step-by-step explanation:

B is wrong because the big one has two curve

C is wrong because the smallest one is not in the same position

D is wrong because the middle line of the biggest one is than the middle line of the smallest one

find the nth term of this quadratic sequence 4 9 16 25 36

Answers

Answer:

        aₙ = n² + 2n + 1

Step-by-step explanation:

a₁ = 4 = 2² = (1 + 1)²

a₂ = 9 = 3² = (2 + 1)²

a₃ = 16 = 4² = (3 + 1)²

a₄ = 25 = 5² = (4 + 1)²

a₅ = 36 = 6² = (5 + 1)²

Therefore:

               aₙ = (n + 1)² = n² + 2n + 1

NEED ANSWERS NOW!! (Reward) brainlest and pointsss 27!!!

Answers

Answer:

quadrant 1 that the graph is mainly in

Answer:

x = 9

x = 1

Step-by-step explanation:

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