What is the best estimate of 687 × 391?

Answers

Answer 1

Answer:

258,620

Step-by-step explanation:

687 x 391 = 268,617

You keep the 268 part but instead of 617 it is 620.


Related Questions

what is 3/4 in a percent

Answers

Answer:

75%

Step-by-step explanation:

Convert the fraction into a decimal number. Multiply the obtained decimal number by 100, to get a percent value.

Answer:

3/4 in a percent is 75%

Step-by-step explanation:

To change a fraction to a decimal you divide the numerator by the denominator. In this case that would be 3 divided by 4 which is 0.75, to change the decimal to a percent you move the decimal two places to the right.

33. Construct a truth table to show that the following argument is valid.
pv q
~p
_____
.: Q


pleaseeeeeee

Answers

Answer:

  see attached

Step-by-step explanation:

Perhaps you want to show that P∨Q will be equal to Q when ¬P is true. Attached is a truth table that shows this is the case.

__

This is simply a restatement of the logic of the OR function. When one its inputs is a logical 0 (false), the output depends on the other input(s).

What is the volume of this container?

Answers

Answer:

6000 cm^3

Step-by-step explanation:

2(10 * 20 * 15) = 6000

PLEASE HELP 20 POINTS AND BRAINLIEST

Answers

Answer:

5/6, 0.83 or 83%

Step-by-step explanation:

Answer:

Probabilities

Decimal: [tex]0.91[/tex]

Fraction: [tex]\frac{91}{100}[/tex]

Percentage: [tex]91[/tex]%

Step-by-step explanation:

Writing out information

2 comedy CDs

3 science-fiction CDs

7 adventure CDs

10 random CDs

22 total CDs

The chosen CD is not a comedy.

Solving probability for each

Decimals rounded to nearest 100th

Comedy:

[tex]2:22\\0.09\\\frac{2}{22}[/tex]

Science-fiction:

[tex]3:22\\0.14\\\frac{3}{22}[/tex]

Adventure:

[tex]7:22\\0.32\\\frac{7}{22}[/tex]

Random:

[tex]10:22\\0.45\\\frac{10}{22}[/tex]

Finding the total of the non-comedy

[tex]0.14+0.32+0.45=0.91[/tex]

[tex]0.91=91[/tex]%

Conclusion

Probabilities

Decimal: [tex]0.91[/tex]

Fraction: [tex]\frac{91}{100}[/tex]

Percentage: [tex]91[/tex]%

How do I get this problem started

Answers

So first in a separate sheet of paper you have to look for how many members of fam and friends does Kimberly have. Then write down the amount of money she has in total.
Then subtract 120-36 cause she buys the book.
Which equals. 84
Then you have to subtract 84 from what I said at the beginning

IM NOT SURE HOW TO SOLVE THIS CAN SOMEBODY HELP ME

Answers

Answer:

The y-intercept is the point (0, 128).

The x-intercepts are the points (-4, 0) and (-8, 0).

As x → ∞, y → ∞.

As x → -∞, y → -∞.

Step-by-step explanation:

To find the y-intercept, substitute 0 for x and solve for y.

P(x) = (x + 4)²(x + 8) P(0) = (0 + 4)²(0 + 8)P(0) = (4)²(8)P(0) = 16 * 8 P(0) = 128

The y-intercept is (0, 128).

To find the x-intercept, substitute 0 for y and solve for x.

0 = (x + 4)²(x + 8)

Set the first term, (x + 4)², equal to 0.

0 = (x + 4)²0 = x + 4 -4 = xx = -4

Set the second term, (x + 8), equal to 0.

0 = x + 8 -8 = xx = -8

The x-intercepts are the point (-4, 0) and (-8, 0).

Look at the degree and leading coefficient of the polynomial to determine the end behavior, and therefore you can determine how y behaves as x gets closer to infinity.

Since the degree of the polynomial is odd (3) and the leading coefficient is positive, the graph falls to the left and rises to the right.

So, as x → ∞, y → ∞ and as x → -∞, y → -∞.

If you want to verify this, plug the equation into your calculator and look at the graph. How does it behave as you look at negative x-values? How about for positive x-values?

An airplane company flies 45 airplanes daily. The CEO collects the following passenger counts for a random sample of airplanes
from the fleet, as shown below.
119, 138, 157, 85, 157, 119, 138, 119, 157, 85

Assuming that the sample is representative of the entire fleet of airplanes, what would be the mean daily passenger count per
plane?

A. 124.75
В. 135.9
C. 127.4
D. 128.5


Answers

Your answer would be C

Step by step:
Start with 10 flights it gives you
Assuming this data is rhe same for each 10 flights you should divide 45 by 10 to get an average of 4.5. (the amount of sets of 10 planes) You then use this number as a constant multiplying it by the number of planes with the same amount of passengers.(in this case 3 flights with 119 passengers) So that would look like this: 4.5 x 3=13.5 (the number of total flights with 119 passengers) Continue to do this with each number set, add them all up, and divide them by the total number of planes, 45.

Help help help help math
Math

Answers

Answer:

Hope the picture will help you. And Please Mark me brilliant!!!

Riya has 5 times as many apples as Tyler. Together they have 24 apples. How many apples does Riya have?​

Answers

Answer:

Riya have 20 apples

Step-by-step explanation:

Let, Tyler have x apples

Then, Riya have 5x apples

Now, From the question,

5x + x =24

or, 6x =24

or, x = 24/6

or, x = 4

Tyler have 4 apples

Again,

Riya have 5x apples

=5*4

=20

Therefore, Riya have 20 apples

to the nearest tenth what is the circumference of a bicycle tire with a radius of 11 inches? use 3.14 for pi

Answers

Step-by-step explanation:

Radius = 11 inches

⇒ Circumference = 2πr

⇒ Circumference = (2 × 3.14 × 11) inches

Circumference = 69 inches

find the volume of 20m, 5m, 18m

Answers

Answer:

600 m³

Step-by-step explanation:

The shape we have is a rectangular pyramid:

Formula: (volume of a rectangular pyramid)

Volume = (1/3) × Base Area × height

___________________________

In our case :

Base area = L × W = 20 × 18 = 360 m²

height = 5 m

⇒ Volume = (1/3) × Base Area × height

    [tex]\Longrightarrow \text{volume} \ =\ \frac{1}{3} \times 360\times 5[/tex]

[tex]\Longrightarrow \ \text{volume} \ =\ 600\ m^{3}[/tex]

-10.3r = 1.03 what is R?

Answers

Answer:

r= -0.1

Step-by-step explanation:

the correct answer is r=0.1

survey showed that the probablity that an e
claimed that he could help place any employee in
id in a job that Is sultable for the employee Is 0.65. A psychometric test consultant
company decides to take this test. The test has an a
based on the result of a psychometric test. An employee working in a particular
rate of 70%. This data is represented in the tree diagram.
fest predicts that
the employee is in
probability that
the employee
is in the
test precicts t
wrong job
the employee is in
the wrong job
Select the correct answer.
Which of these probability values fit the tree diagram?
RA) = 0.35, P(6) = 0.65, RQ) = 0.70, P(O) = 0.30, P(E) = 0.30, P(A) = 0.70
O B. PA) = 0.35, P(6) = 0.65, A(Q) = 0.70, R,D) = 0.30, A8) = 0.70, RA = 0.30
O c.
14) = 0.35, P(6) = 0.65, PQ) = 0.30, P(O) = 0.70, RJ8) = 0.70, AA = 0.30
= 0.30, PA = 0.70

Answers

Answer:

A survey shows that the probability that an employee gets placed in a suitable job is 0.65. So, the probability he is in the wrong job is 0.35.The test has an accuracy rate of 70%. So, the probability that the test is inaccurate is 0.3. Thus, the probability that someone is in the right job and the test predicts it wrong is The probability that someone is in the wrong job and the test is right is 

Adam says 0.25 is smaller then 2
_
5
Explain why he is correct

Answers

Step-by-step explanation:

0.25 = 1/4 is not reach to 1

2 is an integral number.

So, 0.25 is smaller than 2

Answer:

2/5 is equal to 0.40, which is higher than 0.25

Step-by-step explanation:

2 ÷ 5= 0.4 which is the same as 0.40

Amelia is conducting a survey in their neighborhood about noise pollution.

Choose three things they should do to get a representative sample and check that it is representative.

Answers

Amelia should randomly choose people only in their block.

Amelia should ask people what part of the neighborhood they live in.

Amelia should ask people their age.

What is representative sample?

A representative sample are data collected from small group of individual which can be use to represent a large population of people so as to reach a conclusion.

Most researcher tend to make use of representative sample when they want to draw a conclusion as it save time and reduce the stress of having to carryout survey on a larger population.

Therefore Amelia should randomly choose people only in their block.

Learn more about representative sample here:https://brainly.com/question/25142707

Answer:

heres what i got!

is (x-4) a factor of f(x)=x^3-2x^2+5x+1 explain your reasoning

Answers

Answer:

No.

Step-by-step explanation:

It's simpler than you might expect.

If [tex](x - 4)[/tex]  is a factor, then it means that it the function [tex]f(x) = x^3 - 2x^2 + 5x + 1[/tex] can have [tex](x - 4)[/tex] factorised out.

This means that we can say [tex](x - 4) = 0[/tex]

Therefore [tex]x = 4[/tex]

If we put [tex]x = 4[/tex] into the equation:

[tex]f(4) = (4)^3 - 2(4)^2 + 5(4) + 1\\= 64 - 32 + 20 + 1\\= 53[/tex]

We didn't get 0, therefore it isn't a factor!

I WILL GIVE YOU 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS AND EXPLAIN WHY THAT IS THE ANSWER

Answers

Answer:

x=124

y=124

Step-by-step explanation:

if the number next to x is 56

180-56=124

x=124

and x=y

if that is the whole question

Two angles are complementary (the sum of the two angles is 90°). The sum of the first
angle plus twice the second angle is 128°. Find the measures of the angles.

Answers

Answer:

A = 52º AND B=38º

Step-by-step explanation:

Let's call A and B the two angles.

First condition: A + B = 90º

Second cond: A + 2B = 128º

Subtract the first condition to the second: B = 38º

Replace the value of B in any of the 2 conditions; e.g. in the first.

A + 38º = 90º

A = 90º - 38º = 52º

The expression 6 (Squared3)×4 (Squared 2) is equivalent to which of the following numerical expressions?


18 x 8

216 x 16

24 (Squared 6)

(6 x 4) (Squared5)

Answers

Answer:

216 x 16

Step-by-step explanation:

Given

6³ x 4²

Simplify into prime factors.

(2 x 3)³ x (2²)²2³ x 3³ x 2⁴2⁷ x 3³128 x 273456

Now, for it to be equivalent, on dividing 3456 by the product of the expression, the quotient should be 1.

Evaluating the options

18 x 8

3456 ÷ (18 x 8)3456 ÷ 14424Incorrect

216 x 16

3456 ÷ (216 x 16)3456 ÷ 34561Correct

24⁶

3456 ÷ 24⁶3456 ÷ 191102976Answer will be less than 1, so this isn't itIncorrect

(6 x 4)⁵

3456 ÷ (6 x 4)⁵3456 ÷ (24)⁵3456 ÷ 7962624Here also the quotient will be less than 1Incorrect

216 x 16 is the correct answer

What is the answer?

2/5 + 3/4​

Answers

2/5+3/4

Take LCM

5×4=20

Now

2/5+3/48+15/2023/20

Answer:

23/20

Step-by-step explanation:

2/5 + 3/4

LCM = 5 * 4 = 20

=》2/5 * 4/4 = 8/20

=》3/4 * 5/5 = 15/20

So,

2/5 + 3/4

= 8/20 + 15/20

= 23/20

_________

Hope it helps ⚜

Which is an example of why higher education typically has a positive return on investment (ROI)?



The jobs you can get with higher education will earn more money than jobs without a degree or certificate.

Higher paying jobs come with experience, not with earning a degree or certificate.

Higher education usually results in a lot of debt which can be difficult to afford.

The highest paying jobs come with a high school diploma which is an important reason to finish high school.

Answers

Answer:

Higher education loans generally have a positive ROI because you are building skills and work experience that can increase your future earnings. More education is correlated with higher lifetime earnings.

Step-by-step explanation:

The jobs you can get with higher education will earn more money than jobs without a degree or certificate.

What is return on investment?

The term return on investment refers to the profit that one makes from an investment. Higher education is a very profitable investment for an individual.

here,

Higher education loans generally have a positive ROI because you are building skills and work experience that can increase your future earnings. More education is correlated with higher lifetime earnings.

The jobs you can get with higher education will earn more money than jobs without a degree or certificate.

The example of why higher education typically has a positive return on investment (ROI) is the jobs you can get with higher education will earn more money than jobs without a degree or certificate.

Learn more about ROI:

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Product of 630 and 7.2X 10 to the 4th power

Answers

Put it into your calculator

Product means multiply [tex]\times[/tex]

4th power means [tex]10^4[/tex]

[tex]630\ \times\ 7.2\times10^4 = 45360000 = 4.536\times10^7[/tex]

Please help me with this question

Answers

Where is the question?

Help please fast ong im begging

Answers

(x+5)(x+3) so the first one

Answer:

(x + 3)(x + 5)

Step-by-step explanation:

Find two numbers that multiply to 15 and add to 8.

The numbers are 3 and 5.

x² + 8x + 15 = (x + 3)(x + 5)

Write the following expression in terms of logs of x,y and z
Show steps

Answers

We can write the log expression in terms of the log of x, y, and z as expression 1/2(logx+2logy-8logz).

What is a logarithm?

It is another way to represent the power of numbers and we say that 'b' is the logarithm of 'c' with base 'a' if and only if 'a' to the power 'b' equals 'c'.

[tex]\rm a^b = c\\\\log_ac = b[/tex]

We have an expression in logarithm:

[tex]=\rm log\sqrt{\frac{xy^2}{Z^8} }\\\\=log(\frac{xy^2}{Z^8})^{\frac{1}{2} }\\\\=\frac{1}{2}log(\frac{xy^2}{Z^8})[/tex]                         [tex](\rm loga^b = (b)log(a))[/tex]

[tex]\rm\frac{1}{2} (log(xy^2)-logz^8)[/tex]              [tex](\rm log(\frac{a}{b} )= loga - logb)[/tex]

[tex]\rm\frac{1}{2} (log(x)+log(y^2)-logz^8)[/tex]   [tex](\rm logab = loga+logb)[/tex]

[tex]\rm\frac{1}{2} (log(x)+2log(y)-8logz)[/tex]

Thus, we can write the log expression in terms of the log of x, y, and z as 1/2(logx+2logy-8logz).

Learn more about the Logarithm here:

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Find a degree 3 polynomial with real coefficients having zeros 3 and 1 − 4i and a lead coefficient of 1. Write P in expanded form.

Answers

[tex]\text{Let,}\\\\~~~~~~~x=1-4i,\\\\\implies x-1 = -4i\\ \\\implies (x-1)^2 =(-4i)^2\\\\\implies x^2 -2x +1 = -16\\\\\implies x^2 -2x +1 +16 = 0\\\\\implies x^2 -2x +17=0\\\\\text{So,}~ x^2 -2x +17 ~\text{is a factor of the 3 degree polynomial.}\\ \\\text{The polynomial is,}\\\\P(x) = (x-3)(x^2 -2x +17)\\\\~~~~~~~=x^3-2x^2+17x -3x^2 +6x -51\\\\~~~~~~~=x^3 -5x^2 +23x -51[/tex]

HELP ME PLEASE!!

Given: AABC is equilateral
Find the length of segment BC.

Answers

Answer:

D

Step-by-step explanation:

1) if sin(ACB)=BC/BD, then BC=BD*sin(ACB);

2) m(ACB)=60°, then sin(ACB)=√3/2, then

3) BC=5/(√3/2)=10/√3 or 10√3/3.

hromosome 13 in the human body contains a DNA molecule that is about 3.19 centimeters long.

What is the combined length of 102 of these molecules?

Answers

Answer:3,190 centimeters

Step-by-step explanation:

math is easy

Rob and Mike are selling cookie dough
for a school fundraiser. Customers can
buy packages of white chocolate chip
cookie dough and packages of oatmeal
cookie dough. Rob sold 12 packages of
white chocolate chip cookie dough and
6 packages of oatmeal cookie dough for
a total of $192. Mike sold 6 packages of
white chocolate chip cookie dough and
12 packages of oatmeal cookie dough
for a total $222. What is the cost of one
package of white chocolate chip cookie
dough and one package of oatmeal
cookie dough?

Answers

The cost of one package of white chocolate chip cookie is $9 while the cost of one package of oatmeal cookie dough is $14.

What is an equation?

An equation is an expression used to show the relationship between two or more numbers and variables.

Let x represent the cost of white chocolate chip and y represent the cost of oatmeal dough, hence:

12x + 6y = 192   (1)

Also:

6x + 12y = 222    (2)

From both equations:

x = 9, y = 14

The cost of one package of white chocolate chip cookie is $9 while the cost of one package of oatmeal cookie dough is $14.

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need a good explanation, i dont get how to get the answer.

Fifteen years ago, Russell bought his house for $141,000. The house’s property value has decreased by 1.6% per year ever since then. If Russell sells his house, how much is it worth, to the nearest hundred dollars?
a.
$110,700
b.
$107,200
c.
$67,100
d.
$37,900

Answers

Answer:

141000 * (1 - 0.016)^15 = 110699.48 = A 110700

Step-by-step explanation:

1st year depreciation = 141000 -  (141000 * 0.016) = 138744

2nd year depreciation = 138744 - (138744 * 0.016) = 136524.096

3rd year depreciation = 136524.096 - (136524.096 * 0.016) = 134339.710464

etc. unitl you reach the 15th year

Basically we calculate 1.6% of the current value of the house and subtract that from the current value for each year for 15 years.

The equation used in the answer is a faster way to approach your answer instead of calculating for each year.

You'd multiply your initial value by the difference in percentage (note well that since it is decreasing in value we subtract the decimal equivalent to 1.6% which is 0.016, from 1 where one represents 100% and then raise the difference gained to the power of the amount of years which would be 15.

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