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Anna007 [38]
3 years ago
12

If 3x−y=12, what is the value of 8x 2y ?

Mathematics
1 answer:
anygoal [31]3 years ago
3 0

If 3x-y=12, what is the value of 8x/2y?

Answer:

\frac{8x}{2y} =\frac{4x}{3x-12}

Step-by-step explanation:

3x-y=12

-y=12-3x

y=3x-12-------------------------(equation 1)

Now,

\frac{8x}{2y} =\frac{8x}{2(3x-12)}---------(from equation 1)

=\frac{8x}{6x-24}

=\frac{8x}{2(3x-12)}

=\frac{4x}{3x-12}

Therefore, the value of \frac{8x}{2y} =\frac{4x}{3x-12}

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6) A climber is on a hike. After 2 hours she is at an altitude of 400 feet. After 6 hours, she is at an
Bas_tet [7]

Answer:

<em>Her rate of change is 75 ft/h</em>

Step-by-step explanation:

<u>Rate of Change</u>

It measures how one quantity varies with respect to another. The second variable usually is the time.

The climber is hiking. We are given two points of her progress: At 2 hours, she is at 400 ft. This corresponds to the point (2,400).

At 6 hours, she is at 700 ft. This is the point (6,700)

The rate of change is the slope between these two points or the quotient of the variations of each variable:

\displaystyle m=\frac{700\ ft-400\ ft}{6\ h-2\ h}

\displaystyle m=\frac{300\ ft}{4\ h}

m=75\ ft/h

Her rate of change is 75 ft/h

3 0
3 years ago
10. The length of the radius of a bicycle wheel is 14 inches. Which of the following is closest to the circumference of the whee
Elina [12.6K]

Answer:

87.92

Step-by-step explanation:

you have your radius 14 inches  to get the  answer is

1: pie   is 3.14

2: circumference is 2× 3.14×14

3: 3.14×14

4: 43.96 × 2

5 0
3 years ago
What is 22% expressed as a fraction in simplest form?
nata0808 [166]
<span>22% when expressed as a fraction is 22/100.
 to write this in the simplest form, we have to keep dividing both numerator and denominator by a common number.
22/100 , both are divisible by 2. therefore when 22/100 is divided by 2
</span>\frac{22/2}{100/2} =  \frac{11}{50}<span>
then we get 11/50. this cannot be divided any further by a common factor to both. therefore simplest form is 11/50</span>
6 0
3 years ago
What’s this help pls
lys-0071 [83]

How to solve your problem

9−4+3

9x−4+3x9x-4+3x9x−4+3x

Simplify

1

Combine like terms

9−4+3

9x−4+3x{\color{#c92786}{9x}}-4+{\color{#c92786}{3x}}9x−4+3x

12−4

12x−4{\color{#c92786}{12x}}-412x−4

Solution

12−4

SO D

7 0
3 years ago
Read 2 more answers
The table below represents a linear function.
ohaa [14]
(-1,5)(1,9)
slope = (9 - 5) / (1 - (-1) = 4 / (1 + 1) = 4/2 = 2

y = mx + b
slope(m) = 2
use any of ur points in the table....(1,9)...x = 1 and y = 9
now we sub ad find b, the y int
9 = 2(1) + b
9 = 2 + b
9 - 2 = b
7 = b

so ur equation of the table is : y = 2x + 7.....where the slope = 2 and the y intercept = 7

so, the equation with the greater slope and the greater y int is :
y = 3x + 7.5....this has a slope of 3 and a y int of 7.5


8 0
3 years ago
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