X – 2/7= 3Choose one

A. x= -3 2/7

B.x= -2 5/7

C.x= 2 5/7

D.x= 3 2/7

Answers

Answer 1

Answer: Hello

x-2/7=3
==>x=3+2/7
==> x=3 2/7
ANSWER D

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Rewrite the equation 4x + 4y = 20 in slope-intercept form.

Answers

Answer:

y=-x+5

Step-by-step explanation:

The equation of a line in the form:

y=mx+c is called the slope intercept form of a line.

4x+4y=20

⇒ 4y=-4x+20

on dividing by 4 on both sides,we get

y= $(-4)/(4)* x+(20)/(4)$

⇒ y=-x+5

Hence, the slope intercept form of 4x+4y=20 is:

y= -x+5

4x + 4y = 20
If I'm not mistakened, this is in it's standard form.
Slope intercept form → y = mx + b

Let's transform this into that form.
4x + 4y = 20
4y = -4x = 20
y = -x + 5

The slope intercept form would be ⇒ y = -1x + 5

What is the quotient of -8x^6 over 4x^-3 a) x^9 over 32
b) 4x^9
c) -12 over x^2
d) -2x^9

Answers

(-8x^6) / (4x^3) can be broken down as (-8/4) * (x^6/x^-3)
you should know that -8/4 is -2
the second part is dividing variables at different powers which is kinda like subtracting powers

think of it as x ^ (6-(-3))
you get x^9
-2 * x ^9
= -2x^9

What is 10,000,000 written as a power of ten?A.107
B. 108
C.10–8

D.10–7

Answers

A 10^7
(20 symbols too long for a test)

The ice skating rink charges an hourly fee for skating and $3 to rent skates for the day. Gillian rented skates and skated for 3 hours and was charged $21. Which equation represents the cost, c(x), of ice skating as a function of x, the number of hours of skating?

Answers

c(x) = 6x + 3
shee skated for 3 hrs and was charged $21
c(3) = 6(3) + 3
c(3) = 18 + 3
c(3) = 21
correct....so it is c(x) = 6x + 3

C(x) = 6x + 3 (in USD)

Further explanation

Given:

The fee to rent is $3 for the day.
Gillian rented skates and skated for 3 hours and was charged $21.

Question:

The equation that represents cost, C(x), ice skating as a function of x, the number of hours of skating.

The Process:

We try solving a word problem about the single variable equation.

Step-1: calculate the cost of skates per hour.

Let the rate of using the skating rink be R per hour. We will seek the value of R.

On that day Gillian rented skating for 3 hours and paid $ 21. The equation that will determine this given by:

$\boxed{ \ 3R + 3 = 21 \ }$

Both sides subtracted by 3.

$\boxed{ \ 3R = 18 \ }$

We isolate R on the left side. Both sides are divided by 3.

Hence, the fee of skates per hour is $\boxed{R = \$6}$

Step-2: determine the cost equation for ice skating

Let x as the number of hours of skating.

Recall the fee of skates per hour is $6 and the fee to rent is $3 for the day.

Thus, the equation which represents the cost of ice skating as a function of x, the number of hours of skating, will be given by:

$\boxed{ \ C(x) = 6x + 3 \ }$ (in USD)

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Keywords: the ice skating rink, charges an hourly fee, Gillian rented skates, the equation represents the cost, C(x), a function of x, the number of hours of skating, a word problem, the single variable equation

F(x)=2/3x+3
What is the value of f(12)?

Answers

Answer:

f=1/18x+1/4 x=-9/2+18f

A braid was bought to put around a blanket that measures 23 inches by 24 inches, At $0.60 per yard how much was paid for the braid if it can only be purchased by the full yard?