-9 + 10n = 71 What does "n" equal??

QUESTION POSTED AT 06/12/2019 - 03:47 PM

Answered by admin AT 06/12/2019 - 03:47 PM

Add 9 on bolth sides 10n=80 Then divide by 10. N=8
Post your answer

Related questions

An ultra-low flush toilet uses 1.6 gallons every time it is flushed. What is the pattern that describes the total water used after n flushes? How many gallons have been used after 10 flushes?

The pattern is geometric because is adds 1.6 every flush.

After 10 flushes, 16 gallons are used.

ANSWERED AT 28/01/2020 - 01:11 AM


QUESTION POSTED AT 28/01/2020 - 01:11 AM

Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for the first term. -7, -14, -21, -28, …

F(n)=1+-7. You put the F as the equation and 1 as the first term plus whatever you add

ANSWERED AT 28/01/2020 - 01:08 AM


QUESTION POSTED AT 28/01/2020 - 01:08 AM

The sum of the measures of the interior angles of a triangle is equal to _____.

180 degrees I mean I do not know how to really explain it its based on the amount of sides a shape has and the sum of all 3 interior angles is 180

ANSWERED AT 28/01/2020 - 01:06 AM


QUESTION POSTED AT 28/01/2020 - 01:06 AM

Terri is analyzing a circle, y2 + x2 = 36, and a linear function g(x). Will they intersect? y2 + x2 = 36 g(x) graph of the function y squared plus x squared equals 36 x g(x) −4 −4 −2 −2 2 2 Yes, at positive x-coordinates or zero Yes, at negative x-coordinates or zero Yes, at negative and positive x-coordinates or zero No, they will not intersect

Answer:

The graph of the circle and function g(x) intersects at the positive and negative x-coordinates as well as at the origin.

Step-by-step explanation:

The equation of circle is given as:

x^2+y^2=36

also the graph of the function g(x) is given by:

We are given a set of values in a table as:

  x         g(x)

−4       −4

 −2        −2

   2          2

Hence, the function g(x) could be computed with the help of slope intercept form of a equation as:

y=mx+c; where m denotes the slope of the line and c denotes the y intercept.

when x=-4 g(x)=y=-4

-4=-4m+c

also when x=-2 then y=g(x)=-2

-2=-2m+c

on solving the above two equations using elimination method we get,

m=1 and c=0

hence, y=g(x)=x

Now we are asked tgo find whether the graph of the circle and g(x) intersect each other or not.

Clearly from the graph we could see that the graph of the circle and function g(x) intersects at the positive and negative x-coordinates as well as at the origin.


ANSWERED AT 28/01/2020 - 12:50 AM


QUESTION POSTED AT 28/01/2020 - 12:50 AM

Is the expression x^3 * x^3 * x^3 equal to x^3*3*3?

No. 
x^3 * x^3 * x^3 > x^3*3*3
x^3 * x^3 * x^3 = 19683
whereas  x^3*3*3 = 7.626 (rounded to 3 decimal places)

ANSWERED AT 28/01/2020 - 12:49 AM


QUESTION POSTED AT 28/01/2020 - 12:49 AM

Fractions- seven over twenty equals?

7/20 is equal to 0.35 or can also be equal to 35% of the whole.

ANSWERED AT 28/01/2020 - 12:49 AM


QUESTION POSTED AT 28/01/2020 - 12:49 AM

Triangle ABC has vertices of A(-6, 7), B (4, -1), and C (-2, -9). What is the length of the median from angle B?

Answer:  The length of the median from angle B is 8 units.

Step-by-step explanation:  As shown in the attached figure, A(-6, 7), B(4, -1) and C(-2, -9) are the vertices of ΔABC.

We are to find the length of the median BD from angle B to side AC.

Since BD is the median on side AC. So, D will be the mid-point of side AC.

Therefore, the co-ordinates of the point 'D' are

\left(\dfrac{-6+(-2)}{2},\dfrac{7+(-9)}{2}\right)=\left(\dfrac{-8}{2},\dfrac{-2}{2}\right)=(-4,-1).

Now, the length of median BD is equal to the distance between the vertex 'B' and the point 'D'.

Therefore, the length of median BD calculated using distance formula is

BD=\sqrt{(-4-4)^2+(-1+1)^2}\\\\\Rightarrow BD=\sqrt{64+0}\\\\\Rightarrow BD=\sqrt{64}\\\\\Rightarrow BD=8.

Thus, the length of the median from angle B is 8 units.

ANSWERED AT 28/01/2020 - 12:48 AM


QUESTION POSTED AT 28/01/2020 - 12:48 AM

Which fraction is equal to 2/3

4/6 , 6/9 would be 2 examples

ANSWERED AT 28/01/2020 - 12:44 AM


QUESTION POSTED AT 28/01/2020 - 12:44 AM

Write the sum or difference in the standard form a + bi. ( 7 + 5i) - ( -9 + i)

(7 + 5i) - ( -9 + i)
= 7 + 5i - (-9) - (i)
= 7 + 5i + 9 - i
= 16 + 4i

= 4i + 16

ANSWERED AT 28/01/2020 - 12:42 AM


QUESTION POSTED AT 28/01/2020 - 12:42 AM

Let u = <-5, -9>, v = <6, 8>. Find -8u - 2v.

Hello,

i and j are unit's vectors.

u=-5i-9j
v=6i+8j
-8u-2v=40i+72j-12i-16j=28i+56j
-8u-2v=<28,56>

ANSWERED AT 28/01/2020 - 12:38 AM


QUESTION POSTED AT 28/01/2020 - 12:38 AM

Four times the square of a non-zero number is equal to eight times the number?

The correct answer is 2.
4x^2=8x
4x^2-8x=8x-8x
4x^2-8x=0
4x(x-2)=0
x=0 or x=2
Therefore x=2

ANSWERED AT 28/01/2020 - 12:36 AM


QUESTION POSTED AT 28/01/2020 - 12:36 AM

Find the first four terms of the given sequence tn = n/(n+1). A. ½, 2/3, ¾, 4/5 B. 1, ½, 1/3, ¼ C. 1, ½, 2/3, ¾ D. 1, 2, 3, 4

Plug in 1, 2, 3,and 4 for n
t_n=\frac{n}{n+1} \\ \\ t_1=\frac{1}{1+1}=\frac{1}{2} \\ \\ t_2=\frac{2}{2+1}=\frac{2}{3} \\ \\ t_3=\frac{3}{3+1}=\frac{3}{4} \\ \\ t_4=\frac{4}{3+1}=\frac{4}{5}

A

ANSWERED AT 28/01/2020 - 12:34 AM


QUESTION POSTED AT 28/01/2020 - 12:34 AM

A sequence is defined recursively using the formula f(n + 1) = f(n) – 5 . Which sequence could be generated using this formula? 1, –5, 25, –125, ... 2, 10, 50, 250, ... 3, –2, –7, –12, ... 4, 9, 14, 19, ...

Each term will be 5 less than the previous term since the formula says to subtract 5.

3, –2, –7, –12, ... is the correct sequence.

f(1) would be 3
f(2) = f(1 + 1) = f(1) - 5 = 3 - 5 = -2
f(3) = f(2 + 1) = f(2) - 5 = -2 - 5 = -7
f(4) = f(3 + 1) = f(3) - 5 = -7 - 5 = -12
and so on

ANSWERED AT 28/01/2020 - 12:33 AM


QUESTION POSTED AT 28/01/2020 - 12:33 AM

Select the equation in which the graph of the line has a negative slope and the y-intercept equals 10. A.10x+5y=-25 B.5x-10y=-12 C.20x+5y=50 D.2x+6y=10

That would be C.

20x + 5y = 50
5y = - 20x + 50
y = -20/5x + 50/5
y = - 4x + 10
now in y = mx + b form. the m represents ur slope and the b represents ur y intercept. So here, u have a slope of -4 and a y intercept of 10.

ANSWERED AT 28/01/2020 - 12:31 AM


QUESTION POSTED AT 28/01/2020 - 12:31 AM

Which graphThe Pythagorean theorem states that the sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse by the formula a2 + b2 = c2. If a is a rational number and b is a rational number, why could c be an irrational number? represents the solution set of the compound inequality mc011-1.jpg?

Because even though 'a' and 'b' are rational, and their squares are
also rational, that doesn't guarantee that the sum of their squares
has a rational square root.

Examples:

1 and 2
Sum of squares = 5
√5 is irrational

2 and 3
Sum of squares = 13
√13 is irrational

4 and 5
Sum of squares is 41
√41 is irrational

'c' is rational only when 'a', 'b', and 'c' form a . . . . . wait for it . . . . .
a 'Pythagorean triple'.

Examples:

3 and 4
Sum of squares is 25
√25 = 5 is rational                yay

5 and 12
Sum of squares is 169
√169 = 13 is rational            yay

ANSWERED AT 27/01/2020 - 11:50 PM


QUESTION POSTED AT 27/01/2020 - 11:50 PM

How many solutions does the following system have? 3x+2y=1 -9x-6y=3 infinitely many solutions, two solutions, one solution, no solution.

Divide second equation by -3
3x+2y=1
other equatin is
3x+2y=1
since same equation, they are same line and lines are infinite so infinite solutions is answe

ANSWERED AT 27/01/2020 - 11:49 PM


QUESTION POSTED AT 27/01/2020 - 11:49 PM

The sum of the two consecutive odd integers equals 12 what are they

5 and 7..........................

ANSWERED AT 27/01/2020 - 11:48 PM


QUESTION POSTED AT 27/01/2020 - 11:48 PM

A scale drawing of Jack's living room is shown below: If each 2 cm on the scale drawing equals 10 feet, what are the actual dimensions of the room?

Are there any options? like is it multiple choice or not?

ANSWERED AT 27/01/2020 - 01:39 AM


QUESTION POSTED AT 27/01/2020 - 01:39 AM

The solution is n = –2 verified as a solution to the equation 1.4n 2 = 2n 3.2. what is the last line of the justification? a.0.8 = 0.8 b.–0.8 = –0.8 c.3 = 3 d.–3 = –3

The justification:
1.4 · ( -2 ) + 2 = 2 · ( -2 ) + 3.2
-2.8 + 2 = - 4 + 3.2
- 0.8 = - 0.8
Answer: B)

ANSWERED AT 27/01/2020 - 12:46 AM


QUESTION POSTED AT 27/01/2020 - 12:46 AM

Which sequence is generated by the function f(n 1) = f(n) – 2 for f(1) = 10? (a) –10, –12, –14, –16, –18, ... (b) –2, 8, 18, 28, 38, ... (c) 8, 18, 28, 38, 48, ... (d) 10, 8, 6, 4, 2, ...

You skiped one operator.

I assume that the function is f(n+1) = f(n) - 2.

f(1) = 10
f(2) = f(1) - 2 = 10 - 2 = 8
f(3) = f(2) - 2 = 8 - 2 = 6
f(4) = f(3) - 2 = 6 - 2 = 4
f(5) = f(4) - 2 = 4 -2 = 2

So the sequence, is 10, 8, 6, 4, 2, ... [option d]

ANSWERED AT 27/01/2020 - 12:40 AM


QUESTION POSTED AT 27/01/2020 - 12:40 AM

The value of x in this system of equations is 1. 3x y = 9 y = –4x 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x (–4x 10) = 9 –x 10 = 9 –x = –1 x = 1 what is the value of y?

We have two unknowns from the equation therefore, two equations are needed. These equations are:

3x + y = 9
y = –4x +10 

To solve for y, we first substitute the second equation to the first one.
3x + –4x +10= 9 
x = 1

We substitute the value of x to either of the equations and solve for y.

y = –4(1) +10 
y = 6

ANSWERED AT 27/01/2020 - 12:40 AM


QUESTION POSTED AT 27/01/2020 - 12:40 AM

Solomon needs to justify the formula for the arc length of a sector. which expression best completes this argument? the circumference of a circle is given by the formula c=pi * d , where d is the diameter. because the diameter is twice the radius, c= 2 * pi * r. if equally sized central angles, each with a measure of n°, are drawn, the number of sectors that are formed will be equal to 360°/n° the arc length of each sector is the circumference divided by the number of sectors, or _____. therefore, the arc length of a sector of a circle with a central angle of n° is given by 2*pi*r*n/360 or pi*r*n/180 . a. 2*pi*r/270/n b. 2*pi*r/360/n c. 2*pi*r/180/n d. 2*pi*r/90/n

Answer:  The answer is (b). \dfrac{2\pi r}{\frac{360^\circ}{n^\circ}}.


Step-by-step explanation: Let us consider a circle with centre "O" and radius OA=OB=r units. We know that the circumference of a circle is 2\pi\times radius~of~the~circle, so the circumference of Circle 'C' is given by

Circumference=2\pi r.

Also, let us central angles of equal size of 'n°', the the number of sectors formed is given by

no.~of~sectors=\dfrac{360^\circ}{n^\circ}.

Now, the formula for arc length of a sector is given by

arc~length~of~of~a~sector=\dfrac{Circumference~of~the~circle}{no.~of~equally~sized~sectors}.

arc~length~of~of~a~sector=\dfrac{2\pi r}{\frac{360^\circ}{n^\circ}}.

Thus, (b) is the correct option.

ANSWERED AT 27/01/2020 - 12:31 AM


QUESTION POSTED AT 27/01/2020 - 12:31 AM

Find two consecutive odd numbers such that the sum of the first number and one-third of the second number is equal to fifty. 35 and 37 37 and 39 49 and 51

Answer:

37  and  39

Step-by-step explanation:

Let

x-------> the first odd number

x+2----> the second consecutive odd number

we know that

x+\frac{x+2}{3}=50 ----> linear equation that represent the situation

solve for x

Multiply by 3 both sides

3x+(x+2)=150

4x=148

x=37

Find the second consecutive odd number

x+2=37+2=39

ANSWERED AT 27/01/2020 - 12:25 AM


QUESTION POSTED AT 27/01/2020 - 12:25 AM

Simplify 7m - 11n - n + 5m.

Answer:

The simplified form of the given expression is 12(m -n).

Step-by-step explanation:

The given expression is

7m - 11n - n + 5m

We need to simplify the given expression.

Rearrange the terms according to the variables.

7m+5m - 11n - n

On combining like terms, we get

(7m+5m)+( - 11n - n)

On simplification, we get

(12m)+( -12n)

12m -12n

Taking GCF common.

12(m -n)

Therefore the simplified form of the given expression is 12(m -n).

ANSWERED AT 27/01/2020 - 12:06 AM


QUESTION POSTED AT 27/01/2020 - 12:06 AM

The slope of a(n) _____ graphs represents acceleration.

 1. The slope of a speed-time graph indicates acceleration. 

ANSWERED AT 27/01/2020 - 12:05 AM


QUESTION POSTED AT 27/01/2020 - 12:05 AM