What is 21=14+7x I need help

Answer:

30-3=n

Step-by-step explanation:

Hope this helps!

Answer:

x+3=30

Step-by-step explanation:

There are x number of students, then 3 students were added to the class. Now there are 30 students.

Answer:

2x^2-6x-4

Step-by-step explanation:

(7x2 + 4x - 9)

-(5x2 + 10x - 5)

=

7x^2-5x^2=2x^2

4x-10x=-6x

-9-(-5)=-4

thus, your answer is 2x^2-6x-4

Answer:

41

Step-by-step explanation:

because I did it on a calculator and get it mentally

Answer:

C

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

157/ pi= 49.97 which is r squared, so the square root of 49.97= 7.06 or 7.1

so the radius of the rug is 7.1 ft

Step-by-step explanation:

Answer:

1 farmer a makes 2.40 per acre    2 farmer b makes more per acre

Step-by-step explanation:

farmer A we know 3 one thirds is 1

to find one acre multiply .80 by 3

farmer A has $2.40 per acre

farmer B

.70 multiply by 4

$2.80

Answer:

Sum of the three angles of a triangle = 180 degrees

x+x+20+2 x=180

4 x=160

x=40

The angles are 40,(40+20).(2*40)

Answer 40,60,80

Answer:

H' = (-4,-4)

I' = (-2,-4)

J' = (-2,-5)

Answer:

Symbol

Words

Example

>

greater than

x + 3 > 2

<

less than

7x < 28

≥

greater than or equal to

5 ≥ x − 1

≤

less than or equal to

2y + 1 ≤ 7

Step-by-step explanation:

Answer:

whats the paper about though we can't answer if you dont tell us

If there is no paper/picture we can't solve it attach your question next time if you want help.

Answer:

All Real

Step-by-step explanation:

Answer:

(0,1)

Step-by-step explanation:

The zero of a function is where the answer is zero, so x=0 there. There's one point on this graph that has a point where x=0, and that is at y=1. Hope this helped :)

Answer:

y=-3x-11

Step-by-step explanation:

..

Answer:

5.85987448

Step-by-step explanation:

Pie

Answer:

the answer to your question is 5.85987

The algebraic expression -5x+6y-3/x is not a polynomial.

The given polynomials are 7-z, 2p³q²-pq³ and -5x+6y-3/x.

A polynomial is a type of algebraic expression in which the exponents of all variables should be a whole number. The exponents of the variables in any polynomial have to be a non-negative integer. A polynomial comprises constants and variables, but we cannot perform division operations by a variable in polynomials.

Here,

In 7-z has non-negative integer as exponent

So, it is a polynomial

In 2p³q²-pq³ has non-negative integer as exponent

So, it is a polynomial

In -5x+6y-3/x has negative integer as exponent, which is [tex]x^{-1}[/tex]

So, it is not a polynomial

Hence, the algebraic expression -5x+6y-3/x is not a polynomial.

To learn more about the polynomials visit:

brainly.com/question/20121808.

#SPJ2

Not sure if this is the answer but this is what I got

Answer: y= 4/25 x

Answer:

Its elevation relative to the sea level is -18 1/6 ft (it is 18 1/6 below sea level)

Step-by-step explanation:

Here, we want to calculate the elevation relative to sea level

The sea level refer to the base of the sea

We follow the flight procedure;

distance of 24 1/2 ft above sea level , then go further up by 5

its elevation now is 24 1/2 + 5 = 29 1/2 ft

A change of -47 2/3 ft

So the elevation now will be;

29 1/2 - 47 2/3

= 59/2 - 143/3

= (177-286)/6 = -109/6

= -18 1/6 ft

Answer:

Linear equations can take several forms, such as the point-slope formula, the slope-intercept formula, and the standard form of a linear equation. These forms allow mathematicians to describe the exact same line in different ways.

hope this helps

Answer:

$19.60

Step-by-step explanation:

245 is 100% of the total.

x is 108% of the total.

245/100 = x/108

245(108) = 26460

26460/100 = 264.6

264.6 - 245 = 19.6

A n s w e r :

$ 1 9 . 6 0

E x p l a n a t i o n

T a k e   t h e   a m o u n t   a n d   m u l t i p l y   b y   t h e   t a x   r a t e   t o  

d e t e r m i n e   t h e   s a l e s   t a x

t a x = 2 4 5 * 8 %

C h a n g e   t o   d e c i m a l   f o r m

t a x = 2 4 5 * . 0 8

= 1 9 . 6 0

Answer:

Step-by-step explanation:

188 days / 47 days = 4 periods

Mercury left after 188 days:

Answer:

c. 141.7 in

Step-by-step explanation:

multiply the length value by 39.37

Answer:

The answer is B

Step-by-step explanation: Hope this helps

Answer:

2.12

Step-by-step explanation:

Answer:

I think 0.088 altogether I got 63.088 with tax

Step-by-step explanation:

Answer: 8 and 1

Step-by-step explanation:

8+1=9

8-1=7

Answer:

I would help you but i usally know how todo this but i can't figure this out when i figure this out ill come back to it and edit my answer

Step-by-step explanation:

Answer:

10x+9

Step-by-step explanation:

Answer:

y=1/2x+35

Step-by-step explanation:

Find two points: 0,35 and 40,65.

65-35 is 20/40 or 1/2

y=1/2x+b

plug in 0,35

35=b

y=1/2x+35.

Hope this helps!

#Team Rainbows

=========================================================

Explanation:

The point (0,0) means x = 0 and y = 0 pair up together.

Recall that any point is always of the form (x,y).

If we plug x = 0 and y = 0 into the equation, we end up with,

y = 3x

0 = 3*0

0 = 0

We get the same thing on both sides, so we have a true equation.

Since we have a true equation, we've shown that  (0,0) is a solution.

Visually this indicates (0,0) is on the line y = 3x. Put another way, the line y = 3x goes through the origin.

Answer:

Y=2x has a slope of 2, y=2 has a slope of 0

Step-by-step explanation:

Answer:

[tex]\frac{1}{x}[/tex]

or

[tex]\frac{4x^{2} -3}{x}[/tex]

Step-by-step explanation:

can i have brainliest?