What is the estimate for 54×31

Answers

Answer 1

Answer:

50 * 30 = 1500

Answer 2

Answer:

Actual Product =54*31= 1,674

Estimated Product = 50*30=1,500

Step-by-step explanation:

What Is The Estimate For 5431

Related Questions

what is the answer for 10^30 kg

Answers

Answer:

1000000000000000000000000000000 kg / 1E + 30 kg

Step-by-step explanation:

10³⁰ kg

Calculate 10 thirty times,

= (10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10 × 10) kg

=1000000000000000000000000000000 kg

= 1E + 30 kg

_____________

Hope it helps ⚜

given:

[tex] {10}^{30} [/tex]

solution:

[tex] {10}^{30} [/tex]

[tex] = 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10[/tex]

[tex] = 100000000000000000000000000000[/tex]

[tex] = 1.0e30 \: kg[/tex]

7. The graph shows the height, h, in feet, of water
sprayed from a fountain as a function of the
horizontal distance, d, in feet, the water has
traveled.
Water Fountain
h
3
69 12 15
Horizontal Distance (ft)
What is the domain of the function described in the
graph?
OA. All whole numbers less than or equal to 16
OB. All non-negative real numbers less than or
equal to 18
OC. All non-negative real numbers less than or
equal to 16
OD. All whole numbers less than or equal to 18
Height (ft)
20
16
12
18

Answers

The domain is talking about the "range" of the horizontal axis therefore you will be focusing on the x-intercepts.

The answer will be All non-negative real numbers less than or equal to 18

because the x-intercepts lies at 0 and 18. The answer makes sense because the furthest you can go is 18 ft and the closest you could go is 0 ft. The "all non-negative real numbers" puts a restriction on the least distance it could travel so that means that it stops at 0 ft because if you go any further, you will end up in the negatives and it clearly states "non-negative".

if m<1=2x+2 and m<2=9x, find m<1

Answers

Answer:

18/7

Step-by-step explanation:

Since m<2 includes 1, m<2 = m<1

9x = 2x + 2 ⇒ 7x = 2 ⇒ x = 2/7

m<1  = 2(2/7) + 2 = 4/7 + 14/7 = 18/7

Which linear inequality represents the solution set graphed?

Answers

Answer:

it's A

Step-by-step explanation:

I dId this in 6 grade I hope this help

can someone help with this?

Answers

The person above me got it right

2 ≤ -1t Find variable of t

Please show your work

Answers

Answer:

t≤. -2

Step-by-step explanation:

2≤ -t

Dividing both sides by -1,

The sign flips over,

2/-1 ≥ -t/-1

-2≥t

t≤-2

select the correct answer.
What is the value of this expression when c= -4 and d = 10?
1(3+2)
ОА.
2
ОВ.
B. 9
C. 21
D 41

Answers

Hey there!

To answer this question you have to plug in your values and do PEMDAS.
PEMDAS simply means

• Parentheses
• Exponents
• Multiplication
• Division
• Addition
• Subtraction


WE CAN ANSWER THE EQUATION

1/4(c^3 + d^2)

= 1/4(-4^3 + 10^2)

= 1/4(-64 + 100)

= 1/4(-64) + 1/4(100)

= -16 + 25

= 9

OR

1/4(c^3 + d^2)

= 1/4(-4^3 + 10^2)

= 1/4(36)

= 9

Therefore, your answer is: 9


Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

Please Help !!!

Serena took two numbers which may or may not be integers, rounded
each of them up to the nearest integer, multiplied the results, and
got 100. When she took the original numbers, rounded each of them
down to the nearest integer and multiplied the results, she got X.
Find the largest possible value of X.
( The Answer is 202, please give a step by step solution)
Thank You

Answers

Recall (or "define", if you're not familiar) the so-called ceiling and floor functions, or least/greatest integer functions, respectively; for any integer n,

• ceiling function:

[tex]\lceil x \rceil = n \text{ if } n-1 < x \le n[/tex]

• floor function:

[tex]\lfloor x \rfloor = n \text{ if } n \le x < n+1[/tex]

Let x and y be the two numbers Serena picks. She finds that

[tex]\lceil x \rceil \lceil y \rceil = 100[/tex]

[tex]\lfloor x \rfloor \lfloor y \rfloor = X[/tex]

Assume x and y are not integers. Let m and n be two integers such that m - 1 < x < m and n - 1 < y < n. Then

[tex]\lceil x \rceil \lceil y \rceil = mn = 100[/tex]

so m and n are divisors of 100. There's a finite number of distinct divisor pairs (m, n) to consider,

(± 1, ± 100), (± 2, ± 50), (± 4, ± 25), (± 5, ± 5)

whose sums can be one of

± 101, ± 99, ± 52, ± 48, ± 29, ± 21, ± 10, 0

Similarly,

[tex]\lfloor x \rfloor \lfloor y \rfloor = (m-1)(n-1) = 101 - (m + n) = X[/tex]

which is maximized if the sum m + n is negative; the largest of these is m + n = -101, so the maximum value of X is 101 + 101 = 202.

The reasoning for the case of either x or y, or both, being integers is nearly identical.

Ms. Johnson's sixth grade class handed out surveys,
one to each student, about hair color and later posted the results:
75% of students had brown hair
20% of students had red hair
10% of students had blonde hair
What is the error in this sampling?
OA. Not that many students had brown hair.
O B. No one kept track of the number of surveys that went out.
O C.
The results add up to more than 100%
O D. Only two students were involved in tabulating the results.

Answers

Answer:

b

Step-by-step explanation:

Answer:

C.

Step-by-step explanation:

this should be obvious as 75 + 30 = 105

If you sell 175 shares of Michaels Flowers at $7.28 per share and 445 shares of Nanotech One at $10.80 per share, how much money will you receive, to the nearest dollar?

Answers

Answer:6080$

Step-by-step explanation:I did the same question on my test

It’s 6080$ i did the test.

write the following ratio as a fraction in lowest terms
5/3to7/6

Answers

10/7

hope it helps...!!!

find three consecutive positive integers such that the product of the first and the third integer os 29 more than the second

Answers

Answer:

5, 6, 7

Step-by-step explanation:

let the 3 consecutive integers be n , n + 1 , n + 2 , then

n(n + 2) = n+ 1 + 29

n² + 2n = n + 30 ( subtract n + 30 from both sides )

n² + n - 30 = 0 ← in standard form

(n + 6)(n - 5) = 0 ← in factored form

equate each factor to zero and solve for n

n + 6 = 0 ⇒ n = - 6

n - 5 = 0 ⇒ n = 5

n > 0 , then n = 5

the 3 integers are 5, 5 + 1, 5 + 2 , that is

5, 6, 7

A number is multiplied by 20, and that product is added to 5. The sum is equal to the product of 5 and 13.

Answers

Answer:

x = 3

Step-by-step explanation:

First, you will pick the first equation :

(x*20)

Then the next,

(x*20) + 5

Then the last equation,

(x*20) + 5 = 5*13

Then you solve

20x + 5 = 65

20x = 65 - 5

20x = 60

20x/20 = 60/20

x = 3

Which expressions are equivalent to the given expression?
√40
O 1602
0 401
2√10
0 5√8
☐ 4√10

Answers

[tex]2\sqrt{10}[/tex] is equivalent to the expression [tex]\sqrt{40}[/tex]

entire to mixed radical:

[tex]\sqrt{40} \\\sqrt{4\ x\ 10} \\2\sqrt{10}[/tex]

decimal value:

[tex]2\sqrt{10}=6.32....\\\sqrt{40}=6.32...[/tex]

13, 15, 17, x, 20, 21; The median is 18.

Answers

To find the median

 ⇒ must define what is a median

    ⇒Definition of median: middle number of an ordered set

Lets look at the information given

 Set when ordered: 13,15, 17,x,20,21     with median of 18

  ⇒ In this case, there is an even number of numbers

    ⇒ to find the median

       ⇒ must find average of two numbers closest to the middle

             ⇒ which are 'x' and '17' which is equal to the given median 18

Let's set up the equation:

  [tex]\frac{x+17}{2} =18\\x+17=36\\x=19[/tex]

Answer: x = 19

Hope that helps!

If a soccer team made 34 penalty shots out of 100, what fraction and what
percentage of penalty shots did the team miss?
O A.
34
100
I B. 66%
O
C.
66
100
D. 34%
E.
70
100
F. 0.34%

Answers

Answer:

66% Missed (Percentage Form)
66/100 Missed (Fraction Form)

Step-by-step explanation:

100-34 = 66

66/100 Shots missed

66/100 to percentage is 66%

66% shots have been missed.

saved: 12:19 PM
Week 1
Week 2
Week 3
Total
Lettuce
$5.48
?
$3.55
$12.00
Apples
$3.57
$ 2.12
$4.44
?
Chicken
$8.12
$10.13
?
$20.45
Enter his total cost for lettuce, apples, and chicken during Week 2.
$

Answers

135

Step-by-step explanation:

salamat po dana po makatulong

4) The black square is a dilation of the blue square. What is the scale factor of the dilation?
A) 1/4
B) 1/3
C) 3
D) 4

Answers

The scale factor is 4 ! Hope this helped :)

A bracelet costs $15. A matching necklace costs 3 times as much as the bracelet.
fcis the cost of the necklace, which equation models the cost of the
necklace and
shows the solution?
$15 = 3= CC= $5
А
B
$15 X 3 = cc = $45
С
$15 + 3 = cc = $18
3 x $15 + $15 = cc = $60
D

Answers

Answer:

B

$15 X 3 = cc = $45

Step-by-step explanation I asked my teacher and it was right

Schools
Name
7th Grade Math EOY, L104 (Statistics and Probability)
Non-Uniform Probability Models
Homework
1. A box contains marbles of the following colors:
Blue
14
Green
10
Yellow
S
Red
68
(a) Create a probability model showing the theoretical probabilities of picking a marble
from the box
2. Tanya has 3 red hats and 2 blue hats. If she picks one hat at random 100 times, how
Date
Team

Answers

Answer:

this is too much, and I forgot how to do this

What is the surface area of the prism in the picture?

Answers

[tex]\bold{ANSWER:}[/tex]
390 m^2

[tex]\bold{EXPLANATIONS:}[/tex]

Answer:

girl that is so easy, just look it up

Based on the family the graph below belongs to, which equation could represent the graph ?

Answers

Firstly this looks like translated log function graph

y=logx

log1=0

As per graph the graph is pulled some inwards y axis but little bit

y=log2x

Usually log x leaves y axis at -1 but here it leaves at +2

So

y axis is moved upwards (+3)

Last function

y=log(2x)+3

23. Gheri is n years old. Carl is 6 years younger than Gheri and 2 years older than Jean. What is the sum of the ages of all three?​

Answers

n + n-6 + n-8 = 3n-14

Manuel Labore earns $19.50 / hr. and works an average of 38 hours a week. He is considering to renting a house for $1,700 / month. His real estate friend recommends he spends no more than 28% of his monthly income in housing.

A) What is 28% of Manuel’s monthly income?

B) Can he afford the home

Answers

Answer:

see below

Step-by-step explanation:

assuming 4 weeks in a month

$19.50 * 38 * 4 =  $ 2964   per month

.28 * 2964 = 829.92

He really cannot afford this rent......

Answer:

A.    $829.92        B. No

Step-by-step explanation:

A.   38 hours time $19.50 = $741 per week; Monthly: $741 x 4 = $2,964.00

      28% of monthy income = .28 x $2,964.00 = $829.94

B.  No, he can not afford the home.     Cost of the home is $1, 700.00

      ( No more than 28%) well 28% of $2,964 = $829.94

           

Julia's car used 1/100 of a gallon to travel 0.25 miles. How many miles can the car go on one gallon of gas? On the double number line below, fill in the given values, then use multiplication to find the missing value. Enter your answers as fractions, whole numbers, or decimals. miles 0 gallons Enter your final answer as a whole number or decimal.​

Answers

Answer:

25 miles

Step-by-step explanation:

well
1/100 = 0.25
10/100 = 2.5 (Because 0.25 x 10)
100/100 = 25 (Because 0.25x100)

Can you please solve​

Answers

7.25% of 38,000

10% = 3,800

5% = 1,900

1% = 380

0.50% = 190

0.25% = 95

1,900+380+380+95 = 2,755

38,000+2,755 = 40,755

The size of a cell is typically found by capturing an image under a microscope then using software to measure its diameter. Two cells are measured using this method: Cell E: 8.39 x 10-² centimeters Cell F: 6.01 x 10-3 centimeters What's the difference between the diameters of the two cells? Express your answer using either standard notation or scientific notation.​

Answers

Answer:

  7.789×10^-2 = 0.07789 cm

Step-by-step explanation:

Your calculator can find the difference of the two given diameters and express it in any format you like.

The attached image of a calculator display shows the difference of the cell diameters is 0.07789 = 7.789×10^-2 cm.

__

The difference of two numbers with different exponents is found by first adjusting the exponents so they are the same. Here, we choose to adjust both numbers so they have the highest exponent value.

  8.83×10^-2 - 6.01×10^-3

  = 8.39×10^-2 - 0.601×10^-2 = (8.39 -0.601)×10^-2 = 7.789×10^-2

Alternatively, you can convert both numbers to standard form and do the subtraction that way.

  8.83×10^-2 - 6.01×10^-3

  = 0.0883 -0.00601 = 0.07789

_____

Additional comment

The second attachment shows the relationship between place values and their multiplier in scientific notation.

__

The choice of exponent when computing the sum or difference of numbers in scientific notation is usefully informed by an estimate of the value of the sum or difference. A proper choice can avoid the need to adjust the exponent of the result of the operation. Here, we see the subtraction will change the larger value by less than 10%, so the exponent of the result in scientific notation will be that of the larger value (-2).

Find the area and the circumference of a circle with radius 6 cm.
Write your answers in terms of it, and be sure to include the correct units in your answers.

Answers

Step-by-step explanation:

radius=6cm.

π=22 over 7

circumference=2πr

circumference=2×22 over7×6

circumference=51.04cm

A tree in Kira's backyard is 1/4 meters tall. It has been growing for 2 4/5 years.
What is the unit rate in meters per year?

Answers

Answer:

0.0893 meters per year

Step-by-step explanation:

1/4 is 0.252 4/5 is 2.8divide height by year to get height gain per year0.25/2.8 = 0. 0893 (to 3 SF)

Help pls i need this today
:>
!!!

Answers

Answer:

c is the correct one

Step-by-step explanation:

6/8 = 0.75 > 4/8 = 0.5

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