Answer:
<h2>22 hours and 10 hours </h2>
Step-by-step explanation:
let the jobs be x and y, so that
x+y=32--------1
9x+7y=248----2
x=32-y
substitute x=32-y for x in equation 2 we have
9(32-y)+7y=248
open bracket we have
288-9y+7y=248
-2y=248-288
-2y=-40
2y=40
divide both sides by 2 we have
y=40/2
y= 10 hours
subtitute y=10 for y in equation 1 to find x
x+10=32--------1
x=32-10
x=22
x=22 hours
Answer:
Step-by-step explanation:
(x - 3)/2 = 9
x - 3 = 18
x = 21
(y - 5)/2 = 6
y - 5 = 12
y = 17
(21, 17)
Answer:
The minimum value is 
or 
Step-by-step explanation:
we have
This is the equation a vertical parabola open upward
The vertex represent a minimum
The general equation in vertex form is
where
(h,k) is the vertex
Convert the given function in vertex form
Factor 2
Complete the square
Rewrite as perfect squares
The vertex is the point
Answer:
Markdown
Step-by-step explanation:
For example: the price of the shirt was $10.00 It had a markdown of 15%. This would be $8.5.
Answer:
D. 340 square inches
Step-by-step explanation:
Side length translates to 1 side of the square, so you do 10 x 10 to find the area of the square.
10 x 10 = 100
The triangle one isn't much more difficult. The formula for finding the area of a triangle is bh1/2
So:
10 x 12 = 120/2=60
From there just multiply the result by 4- the amount of triangles on the square pyramid, and you'll get your answer.
60
x 4
240 + 100 = 340 square inches
if this helped brainliest would be epic
