C. 3851 yards D. 3181 yards Math question please help I'm running out of time

Which is the equation of the given line in point- slope form?

Alina [70]

Answer:

$y-0=-1(x-8)$

Step-by-step explanation:

The given line passes through (0,8) and (8,0).

The slope of this line is $m=\frac{8-0}{0-8} =-1$ .

The point-slope form is given by:

$y-y_1=m(x-x_1)$

We substitute the slope and the point (8,0) to get:

$y-8=-1(x-0)$

We substitute the slope and the point (0,8) to get:

$y-0=-1(x-8)$

3 0

3 years ago

The diameter of a circle increased from 25cm to 25.8cm. Find the percentage increase in its circumference.

Leno4ka [110]

Answer:

3.1% increase

Step-by-step explanation:

Diameter1=25cm

Radius1=12.5cm

Circumference1=2x22/7x12.5

Diameter2=25.8cm

Radius2=12.9cm

Circumference2=2x22/7x12.9

% increase =Circumference2-Circumference1/Circumference2 x 100%= 2x22/7x12.9-2x22/7x12.5 / 2x22/7x12.9 x100%

12.9-12.5/12.9 x 100%

0.4/12.9 x 100%

4/129 x 100%

3.1%

4 0

3 years ago

Solve the system using substitution 5x+3y=-4 y-2x=6

leonid [27]

Solving steps:-

5x+3y=−4

y−2x=6

-->To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.

5x+3y=−4,−2x+y=6

-->Choose one of the equations and solve it for x by isolating x on the left hand side of the equal sign.

5x+3y=−4

-->Subtract 3y from both sides of the equation.

5x=−3y−4

--> Divide both sides by 5.

x = 1/5(-3y - 4)

--> Multiply 1/5 −3y−4.

x = -3/5y - 4/5

--> Substitute -3y - 4/ 5 for x n the other equation, −2x+y=6.

-2 (-3/5y - 4/5) + y = 6

--> Multiply −2 times -3y - 4/ 5

6/5y + 8/5 + y = 6

--> Add 6y/5 to y

11/5y + 8/5 = 6

--> Subtract 8/5 from both sides of the equation.

11/5y = 22/5

--> Divide both sides of the equation by 11/5, which is the same as multiplying both sides by the reciprocal of the fraction.

y = 2

--> Substitute 2 for y in x= -3/5y - 4/5. Because the resulting equation contains only one variable, you can solve for x directly.

x = -3/5 x 2 - 4/5

--> Multiply -3/5 times 2.

x = -6 - 4/ 5

--> Add -4/5 to -6/5 by finding a common denominator and adding the numerators. Then reduce the fraction to lowest terms if possible.

x = -2

--> The equation is now solved.

Answer : x = -2, y = 2

Explanation : If you think this answer is good, please give "Brainliest" or rate/heart my answer. Hope this helps you.

4 0

2 years ago

A. Given directed line segment MN with M(-6,-2) and N(3,1), find point P that partitions the segment into a ratio of 1:2. Explai

tester [92]

1. By definition, a given point that divides a segment into a ratio a:b, as the following x-coordinate:

$x1+\frac{a}{a+b} (x2-x1)$

And the y-coordinate:

$y1+\frac{a}{a+b}(y2-y1)$

2. Kepping this on mind, you have:

A) x-coordinate:

$-6+(\frac{1}{1+2}) (3+6)=-3$

y-coordinate:

$-2+(\frac{1}{1+2} )(1+2)=-1$

The answer is: $P(-3,-1)$

B) The x-coordinate is:

$-1+(\frac{3}{3+1} )(3+1)=2$

The y-coordinate is:

$6+(\frac{3}{3+1} )(-2-6)=0$

The answer is: $L(2,0)$

7 0

3 years ago

Math help please?????????????????????

dolphi86 [110]

1. 321, 670
2. 321, 700
3. 322,000
4. 320,000
5. 300,000
6. 5879
7. 37,862
8. 78,781
9. 79,999
10. 75,000

I hope this helps xx

5 0

4 years ago