If we expand -7x ( 5 - x ) ..
.....we have to multiply the outside term with the inside values
there fore if we multiply 7 and 5 the answer is 35....... and the negative symbol will make it negative so it will be -35 and the x in the outside value will be multiplied to it so it will become -35x.....
then if we multiply -7x and -x ...... - sign and the other - sign when multiplied will make + sign
and when x and x are multiplied from both sides it comes as x^2 ( this means x squared )........when 7 is multiplied the final answer will be 7x^2.......
so we will have -35x + 7x^2
SO when this will be arranged in descending order it means from biggest to smallest....so this will be 7x^2 - 35 x
HOPE IT HELPED !!!
Answer:
Step-by-step explanation:
1 pound = 16 ounce
6 pound = 6 * 16 = 96 ounces
Cost of 96 ounces of grapes = $18
Cost of 1 ounce of grape = 18/96
Cost of 72 ounces of grape = 18*72 / 96 = 27/2
= $13.50
Or
Direct Proportion because is weight increase, the cost will increase
96:18 = 72 : x
Product of means = Product of extremes
18*72 = x*96
18*72/96 = x
x =$13.50
I'm assuming you are finding the equation of the line of Line J
Slope-intercept form: y = mx + b
[m is the slope, b is the y-intercept or the y value when x = 0 --> (0, y) or the point where the line crosses through the y-axis]
For lines to be perpendicular, the slopes have to be negative reciprocals of each other. (basically changing the sign (+/-) and flipping the fraction/switching the numerator and the denominator)
For example:
slope = 2 or
Perpendicular line's slope = [changed sign from + to -, and flipped the fraction]
slope =
Perpendicular line's slope = [changed sign from - to +, and flipped the fraction]
Since you know the slope is 3, the perpendicular line's slope is . Plug this into the equation
y = mx + b
To find b, plug in the point (3, 8)
8 = -1 + b Add 1 on both sides to get "b" by itself
8 + 1 = -1 + 1 + b
9 = b
12
30
15
AND THE LAST ONE IS 2 LOL
and thank you for the points :))))) i appreciate it :’)
Answer:
Step-by-step explanation:
Question
Find the perimeter of a triangle with vertices A(2,5) B(2,-2) C(5,-2). Round your answer to the nearest tenth and show your work.
perimeter of a triangle = AB+AC+BC
Using the distance formula
AB = sqrt(-2-5)²+(2-2)²
AB = sqrt(-7)²
AB =sqrt(49)
AB =7
BC = sqrt(-2+2)²+(2-5)²
BC = sqrt(0+3²)
BC =sqrt(9)
BC =3
AC= sqrt(-2-5)²+(2-5)²
AC= sqrt(-7)²+3²
AC =sqrt(49+9)
AC =sqrt58
Perimeter = 10+sqrt58