Questions posted in Mathematics - AssignmentGrade.com

Questions posted in Mathematics

Round to the nearest tenth 310.286

310.3 is the answer.

ANSWERED AT 29/05/2020 - 05:30 PM


QUESTION POSTED AT 29/05/2020 - 05:30 PM

Help please...........

The answer is B.

Function means every x corresponds to one unique y value. ACD all have duplicates correspondence.

ANSWERED AT 29/05/2020 - 05:30 PM


QUESTION POSTED AT 29/05/2020 - 05:30 PM

7.1 is 10 times larger than

.71 all you do is move the decimal one place to the left or divide by 10

ANSWERED AT 29/05/2020 - 05:29 PM


QUESTION POSTED AT 29/05/2020 - 05:29 PM

Is the simplified form of 2square root of 3 ⋅ square root of 12 rational?

No

it is not rational

ANSWERED AT 29/05/2020 - 05:29 PM


QUESTION POSTED AT 29/05/2020 - 05:28 PM

How do I do these word problems

13) hourly wage = ($12.25 - $0.75)

ANSWERED AT 29/05/2020 - 05:27 PM


QUESTION POSTED AT 29/05/2020 - 05:27 PM

Rewrite the radical as a rational exponent. the cube root of 2 to the seventh power

\bf a^{\frac{{ n}}{{ m}}} \implies  \sqrt[{ m}]{a^{ n}} \qquad \qquad
\sqrt[{ m}]{a^{ n}}\implies a^{\frac{{ n}}{{ m}}}\\\\
-------------------------------\\\\
\sqrt[3]{2^7}\implies 2^{\frac{7}{3}}

ANSWERED AT 29/05/2020 - 05:27 PM


QUESTION POSTED AT 29/05/2020 - 05:27 PM

According to the Fundamental Theorem of Algebra, which polynomial function has exactly 6 roots? a. f(x)= 5x^4+10x^2 b. f(x)= 5x^5+3x^4+12x^3+7x^2-2x+15 c. f(x)= 6x^5+x^3-4x^2+x-5 d. f(x)= 7x^6+3x^3+12

Answer: d.f(x)=7x^6+3x^3+12


Explanation:-

  • The fundamental theorem of algebra tells that every non-constant single-variable polynomial with complex coefficients has at least one complex root.
  • Corollary to the fundamental theorem tells that every polynomial of m>0 degree has exactly m zeroes.

Thus only option d.f(x)=7x^6+3x^3+12 with degree 6 has exactly 6 roots.

ANSWERED AT 29/05/2020 - 05:26 PM


QUESTION POSTED AT 29/05/2020 - 05:26 PM

What is the solution to the system of polynomials graphed below?

The answer to your question is A. (2,14)

ANSWERED AT 29/05/2020 - 05:26 PM


QUESTION POSTED AT 29/05/2020 - 05:26 PM

Q, S, T, and U are coplanar: true or false? Why?

I think it would be true because they are crossing

ANSWERED AT 29/05/2020 - 05:26 PM


QUESTION POSTED AT 29/05/2020 - 05:26 PM

Make tan(x)(csc(x)-sin(x)) into 1 trigononometrical value

\bf tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\qquad\qquad  csc(\theta)=\cfrac{1}{sin(\theta)}
\\\\\\
sin^2(\theta)+cos^2(\theta)=1\implies cos^2(\theta)=1-sin^2(\theta)\\\\
-------------------------------\\\\
tan(x)[cos(x)-sin(x)]\implies \cfrac{sin(x)}{cos(x)}\left[ \cfrac{1}{sin(x)}-sin(x) \right]
\\\\\\
\cfrac{sin(x)}{cos(x)}\left[ \cfrac{1-sin^2(x)}{sin(x)}\right]\implies \cfrac{sin(x)}{cos(x)}\left[ \cfrac{cos^2(x)}{sin(x)}\right]\implies cos(x)

ANSWERED AT 29/05/2020 - 05:26 PM


QUESTION POSTED AT 29/05/2020 - 05:26 PM

Suppose that f(x)=8x+1. Complete parts (a) through (f). (a) What is the slope? (b) What is the y-intercept? (c) What is the zero of f? (d) Solve f(x)=9. What point is on the graph of f? The solution to f(x)=9 is ____ (type an ordered pair) The corresponding point on the graph is ____ (type an ordered pair) (e) Solve f(x)≤-7. The solution is ____ (type your answer in interval notation) (f) Graph f.

F(x) = 8x + 1
a) The slope is the number on the x which is 8
b) y-intercept is added (or subtracted) to the x which is 1
c) f(0) = 8(0) + 1 = 1
d) 9 = 8x + 1
    8 = 8x
    x = 1 - solution
(1, 9) - ordered pair
e)
-7 <= 8x + 1
-8 <= 8x
-1 <= x
{x | x => -1}

I'll let you graph f(x)

ANSWERED AT 29/05/2020 - 05:26 PM


QUESTION POSTED AT 29/05/2020 - 05:26 PM

PLEASE HELP ME OUT. Total cholesterol levels from 190 up to 240 milligrams per ​deciliter, including 190 and not including 240​, are considered borderline. Letting x represent a​ patient's total blood cholesterol​ level, write an inequality that describes the ranges corresponding to the borderline of total blood cholesterol. This data is fictitious. Choose the correct inequality below. A. 190 < x ≤ 240 B. 190 ≤ x < 240 C. 190 ≤ x ≤ 240 D. 190 < x < 240

To interpret inequalities like these, split the inequality into two parts.
For example, take choice (A).
A. 190< x <= 240
first read 190<x  that means x is greater than 190 (but cannot be equal to).
Notice that x is on the "wider" side of the sign.
Then read x<=240, this means that x is less than, or equal to 240, since x is on the small part of the inequality sign, and the extra line makes the equality.
So, together, choice A is interpreted as
x can take values from 190 to 240, excluding 190, but including 240.

Based on this, you can attempt to find the correct choice.

ANSWERED AT 29/05/2020 - 05:26 PM


QUESTION POSTED AT 29/05/2020 - 05:26 PM

Devon purchased tickets to an air show for 7 adults and 2 children. The total cost was $173. The cost of a child's ticket was $8 less than the cost of an adult's ticket. Find the price of an adult's ticket and a child's ticket. Please show work! Thanks

Let 
C=child ticket
A=adult ticket

then
A=C+8 ........(1)
and
7A+2C=173 ......(2)
Substitute (1) in (2)
7(C+8)+2C=173
distribute
7C+56+2C=173
isolate C and solve
9C=173-56=117
C=$13
hence adulat
A=$13+$8=$21.


ANSWERED AT 29/05/2020 - 05:25 PM


QUESTION POSTED AT 29/05/2020 - 05:25 PM

Gym A charges 9.00 per hour of child. gym B charges 0.75 per 5 minutes of childcare what's more accurate?

They are both the same amount per hour so gym a would be more accurate

ANSWERED AT 29/05/2020 - 05:25 PM


QUESTION POSTED AT 29/05/2020 - 05:25 PM

Part A: Find a rational number that is between 7.7 and 7.9. Explain why it is rational. Part B: Find an irrational number that is between 7.7 and 7.9. Explain why it is irrational. Include the decimal approximation of the irrational number to the nearest hundredth.

Part A.
A rational number can be expressed as a quotient of two integers.
Therefore 78/10 = 39/5 = 0.78 represents a rational number between 7.7 and 7.9.
Answer: 39/5

Part B
An irrational number cannot be expressed as a quotient of two integers.
Let π*x = 7.8
Then x = 7.8/π = 2.483
Try 2.5*π = 7.854 which lies between 7.7 and 7.9

Answer: 7.85 (nearest hundredth) 
Because this number is approximately equal to 2.5π, it is irrational because π is an irrational number.
The actual value of 2.5π = 7.8539816 ...

ANSWERED AT 29/05/2020 - 05:25 PM


QUESTION POSTED AT 29/05/2020 - 05:25 PM

Rewrite 7x+4=x-2 as a system

\bf 7x+4=y\qquad \qquad x-2=y&#10;\\\\\\&#10;y=y\implies 7x+4=x-2\implies &#10;\begin{cases}&#10;y=7x+4\\&#10;y=x-2&#10;\end{cases}

ANSWERED AT 29/05/2020 - 05:24 PM


QUESTION POSTED AT 29/05/2020 - 05:24 PM

The paid off portion of your mortgage at any point in time is called the

Equity is the difference between the market value of your home and principle or principle the amount u still owe

ANSWERED AT 29/05/2020 - 05:24 PM


QUESTION POSTED AT 29/05/2020 - 05:24 PM

What lines would you use to solve -3x-2=2x+8?

Hello : 
  y = -3x-2  ....line :  C  because the y intercept is : -2
   y = 2x+8  ...line  : D  because the y intercept is : 8

ANSWERED AT 29/05/2020 - 05:23 PM


QUESTION POSTED AT 29/05/2020 - 05:23 PM

Roslyn has two containers of water for a camping trip. One container holds 2 times as much as the other. The total amount of water is 27 gallons. How much water is in each container?

x + 2x = 27

3x = 27

27/3 = 9

x=9

2*9 = 18

18+9 =27

 so one container is 9 gallons and the second container is 18 gallons

ANSWERED AT 29/05/2020 - 05:23 PM


QUESTION POSTED AT 29/05/2020 - 05:23 PM

An equivalent form of this equation x/12-7=x/4

The easiest way to do this equation is to multiply everything by 12. This gives us x - 84 = 3x. Next, we subtract both sides by x and get 2x = -84. Finally, we divide both sides by 2 and get x = -42.

Hope this helps!

ANSWERED AT 29/05/2020 - 05:23 PM


QUESTION POSTED AT 29/05/2020 - 05:23 PM

Two numbers have a sum of 133 and a difference of 25. Find the numbers.

It would be 108 and 25

ANSWERED AT 29/05/2020 - 05:23 PM


QUESTION POSTED AT 29/05/2020 - 05:23 PM

Tim wants to model a doll house from a real house that measures 80 feet in length by 32 feet in width. He decides to use a scale in which ¼ inch equals 1 foot. What will the dimensions of his model be? Length = Width =

1/4":1' = 1/4" : 1'= 1:48
So the dimensions of the model are
L=80'/48=960"/48=20"
W=32'/48=384/48=8"

ANSWERED AT 29/05/2020 - 05:23 PM


QUESTION POSTED AT 29/05/2020 - 05:23 PM