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3 years ago

8

For the equation y=7x+3 the value of X changes from 1 to 2

2 answers:

Lady_Fox [76]3 years ago

8 0

When x=1, 7x+3 = 10. When x=2, 7x+3 = 17. When the value of 'x' changes from '1' to '2', the value of 7x+3 changes from '10' to '17' . . . a distance of '7' . That's what the ' 7x ' in the equation means, and that's what we mean when we say that the 'slope' of the equation is '7'. 'y' changes '7' for every '1' that 'x' changes. Hope this helps :))

WITCHER [35]3 years ago

5 0

When x=1, 7x+3 = 10.

When x=2, 7x+3 = 17.

When the value of 'x' changes from '1' to '2', the value of 7x+3 changes
from '10' to '17' . . . a distance of '7' .

That's what the ' 7x ' in the equation means, and that's what we mean
when we say that the 'slope' of the equation is '7'. 'y' changes '7' for
every '1' that 'x' changes.

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A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.

Whitepunk [10]

Answer:

$A=81\pi\ m^{2}$

Step-by-step explanation:

Step 1

Find the radius of the circular cross section

we know that

The circumference is equal to

$C=2\pi r$

we have

$C=18\pi\ m$

substitute and solve for r

$18\pi=2\pi r$

simplify

$18=2 r$

$r=9\ m$

Step 2

Find the area of the circular cross section

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=9\ m$

substitute

$A=\pi (9)^{2}$

$A=81\pi\ m^{2}$

8 0

2 years ago

Simplify the expression -3 devided by -2/5. A. -7 1/2 B. -1 1/5 C. 1 1/5 D. 7 1/2

Llana [10]

Answer:

D. 7 1/2

Step-by-step explanation:

-3 divided by -2/5

-(-3(-5/2)

-(-3 x 5/2)

-15/2

7 1/2

Hope it helps

7 0

2 years ago

How to solve 10+(-3 3/8)

katrin2010 [14]

10+(-3 3/8)

= 10+(-27/8)

=80/8-27/8

=53/8

4 0

2 years ago

Read 2 more answers

19.Find dy/dx <br> of the function y = f(x) definded by x²+xy-y2 = 4.

KengaRu [80]

Answer:

2x + y

Step-by-step explanation:

x² + xy - y² = 4

→ Remember the rule, bring the power down then minus 1

2x + y

3 0

2 years ago

Determine the location and values of the absolute maximum and absolute minimum of given function: f(x)= ( -x+2)^4, Where 0<=x

jeyben [28]

Answer:

The absolute maximum and the absolute minimum are (0, 16) and (2, 0).

Step-by-step explanation:

First, we obtain the first and second derivatives of the function by chain rule and derivative for a power function, that is:

First derivative

$f'(x) = -4\cdot (-x+2)^{3}$

Second derivative

$f''(x) = 12\cdot (-x + 2)^{2}$

Then, we proceed to do the First and Second Derivative Tests:

First Derivative Test

$-4\cdot (-x+2)^{3} = 0$

$-x + 2 = 0$

$x = 2$

Second Derivative Test

$f''(2) = 12\cdot (-2+2)^{2}$

$f''(2) = 0$

The Second Derivative Test is unable to determine the nature of the critical values.

Then, we plot the function with the help of a graphing tool. The absolute maximum and the absolute minimum are (0, 16) and (2, 0).

3 0

2 years ago