MATHEMATICS HIGH SCHOOL

I am a decimalIf you double me,my double is between 0.6 and 0.7,
But closer to 0.6.

My Thousandths digit is not a 2.
But the thousandths digit of my double is.
What decimal might I be?

Answers

Answer 1
Answer: 0.6<2x<0.65 (because it's closer to 6)
0.3<x<0.325

Since the thousandths digit of 2x is 2, then the thousandths digit of x is 1 or 6, so the decimal could be 0.301, 0.302, 0.311, 0.312, 0.321

Hope this helps :)
Answer 2
Answer:
Numbers greater than 0.3 and less then 0.35 are between .6 and .7 when doubled.

Lets assume it is a decimal that goes up to the thousandths. 
0.310 to 0.324 Would be closer to .6 than .7. We know the thousands digit has to be a 1 or a 6 because its double ends in a two. So it looks like our options are .311, .316 and .321.

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Which system of equations can be graphed to find the solution(s) to 4x2 = x2 – 7?

Answers

4x^2 = x^2 - 7

In order to find the solution by graphing we need to make two equation with x and y terms

we use Left hand side 4x^2 for first equation and right side x^2 -7 for second equation.

So the equation becomes

first equation y=4x^2

Second equation y= x^2 - 7

y= x^2 \ and \ y= x^2-7 are the system of equations that can be graphed to find solution

The system of equations that can be graphed to find the solutions of the equation 4{x^2} = {x^2} - 7 are \boxed{y = 4{x^2}{\text{ and }}y = {x^2} - 7}.

Further explanation:

Given:

The equation is 4{x^2} = {x^2} - 7.

Explanation:

The given equation is 4{x^2} = {x^2} - 7.

The left hand side of the equation is 4{x^2}

The right hand side of the equation is {x^2} - 7.

Consider the left hand side as y.

y = 4{x^2}

Consider the right hand side as y.

y = {x^2} - 7

The two equations are y = {x^2} - 7 and y = 4{x^2}

The system of equations that can be graphed to find the solutions of the equation 4{x^2} = {x^2} - 7 are \boxed{y = 4{x^2}{\text{ and }}y = {x^2} - 7}.

Learn more:

  1. Learn more about inverse of the function brainly.com/question/1632445.
  2. Learn more about equation of circle brainly.com/question/1506955.
  3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Linear equation

Keywords: system of equations, roots, equation, 4x2 = x2 - 7, zeros, find the roots, graphed, solutions, polynomial, left hand side, right hand side, graphical, factors, function, polynomials, quadratic equation.

Which ordered pair will solve the equation 2 × 4 + x = y?A.
(5, 16)

B.
(4, 12)

C.
(3, 12)

D.
(2, 9)

Answers

This answer uses NMF, which you can find out about on my profile:

Preliminary work:
Following the BIDMAS order of operations, we can calculate part of it already, and that's the 2•4, which equals 8.
Therefore, the equation now reads:
8+x = y

x = 5:
8+5 = 13
13 ≠ 16
13 ≠ y

x = 4:
8+4 = 12
12 = 12
12 = y

Therefore, the pair is (4, 12)

Express 0.59 as a fraction....

Answers

.59 as a fraction can be written as 59/100.
(I think of .59 as meaning 59 percent)

Answer:

59/100

Step-by-step explanation:

just put any number as a whole number over a 100 and reduce if needed to.

Which expression represents the completely factored form of 2x3 + x2 - 8x - 4?a (x2 - 4)(2x + 1)
6 (x - 2)2(2x - 1)
0 (x - 2)(x + 2)(2x - 1)
d (x-2)(x + 2)(2x + 1)

Answers

The answer is the letter D

Answer:

D

Step-by-step explanation:

D is also equivalent

Which pair of measurements is not equivalent?3 hours, 10 minutes and 190 minutes
240 minutes, and 4 hours
350 minutes, and 5 hours, 50 minutes
480 minutes, and 6 hours

Answers

Answer:

480 minutes, and 6 hours

Step-by-step explanation:

At first we should know that

1 hour = 60 minutes

We will check which option is not equivalent.

1) 3 hours, 10 minutes and 190 minutes

3 hours, 10 minutes = 3 * 60 + 10 = 180 + 10 = 190 minutes

So, the pair of measurements is equivalent.

2) 240 minutes, and 4 hours

4 hours = 4 * 60 = 240 minutes

So, the pair of measurements is equivalent.

3) 350 minutes, and 5 hours, 50 minutes

5 hours, 50 minutes = 5 * 60 + 50 = 300 + 50 = 350 minutes

So, the pair of measurements is equivalent.

4) 480 minutes, and 6 hours

6 hours = 6 * 60 = 360 minutes

So, the pair of measurements is not equivalent.

In a train yard, there are 6 flatcars, 7 boxcars, and 3 livestock cars. A train is made up of 9 cars.Which would you use to find the number of ways the train could be made up?

Answers

The number of ways the train could be made up are 4,151,347,200.

What is permutation?

A permutation of a set is an arrangement of its members into a sequence or linear order, or if the set is already ordered, a rearrangement of its elements.

Now the given cars are 6 flatcars, 7 boxcars, and 3 livestock cars.

So the total number of cars, n  = 6 + 7 + 3

                                                   = 16

Now, a train is made up of 9 cars,

Therefore, r = 9

Hence the required number of ways the train could be made is nPr

nPr = n!/(n-r)!

nPr = 16!/(16-9)!

nPr = 16!/7!

nPr = 16*15*14*13*12*11*10*9*8

nPr = 4,151,347,200

Hence,the number of ways the train could be made up are 4,151,347,200.

More about Permutation :

brainly.com/question/12655517

#SPJ2

Answer:

The answer is A on edge

Step-by-step explanation:

                                                                                                                                         
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