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quester [9]
3 years ago
13

HELP ASAP OVERDUE!!!!!!!!!!!!!!!!!!!!!!!! 15 POINTS + BRAINLIEST!!!

Mathematics
2 answers:
SSSSS [86.1K]3 years ago
7 0

Answer:

its5

Step-by-step explanation:

Sliva [168]3 years ago
4 0

Answer:is A

A) Molly walked 5 miles and Mary walked 15 miles last month. If Molly walks 3 miles per week and Mary walks 2 miles per week, how long will it be before Molly has walked more miles than Mary?

Step-by-step explanation:

<h3>An inequality can have more than one solution. The set of all solutions of an inequality is called the solution set. The symbol ≥/ means “is not greater than or equal to.” </h3>

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HOW do i solve this? <br><br> 7.42 ÷ 1.75
artcher [175]

Answer:

Step-by-step explanation:

You divide 7.42 / 1.75 = the answer is 4.24

7 0
2 years ago
Read 2 more answers
At each mile marker for the first five miles of a marathon, Ellie was 18 seconds, 9 seconds, 14 seconds, 6 seconds, and 3 second
mixas84 [53]
The mean is the average.

Let A = mean

A = (18 + 14 + 9 + 6 + 3)/5

A = 50/5

A = 10

Ellie's mean time is 10 seconds.
3 0
2 years ago
Apex learning 6.8.5 question 3 answer
Maurinko [17]

Answer:

i need more info

Step-by-step explanation:


8 0
3 years ago
The length of a rectangle is 4 more than twice the width. If the perimeter of the rectangle is 104 centimeters, what are the len
qaws [65]

Answer:

Make Width = 'x'

Length = 4 + 2x

Perimeter = 2 x Width + 2 x Length

86 = 2(x) + 2(4 + 2x)

86 = 2x + 8 + 4x

Collect like terms:

2x + 4x = 86 - 8

6x = 78

x = 13

Width = 13 cm

Length = 30 cm

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
a rectangular box with two sqaure opposite ends is to hold 8000 cubic inches. find the dimensions of the cheapest box if tge rec
AveGali [126]

Answer:

the dimensions of the box that minimizes the cost are 5 in x 40 in x 40 in

Step-by-step explanation:

since the box has a volume V

V= x*y*z = b=8000 in³

since y=z (square face)

V= x*y² = b=8000 in³

and the cost function is

cost = cost of the square faces *  area of square faces + cost of top and bottom * top and bottom areas + cost of the rectangular sides * area of the rectangular sides

C = a* 2*y² +  a* 2*x*y + 15*a* 2*x*y =  2*a* y² +  32*a*x*y

to find the optimum we can use Lagrange multipliers , then we have 3  simultaneous equations:

x*y*z = b

Cx - λ*Vx = 0 → 32*a*y -  λ*y² = 0 → y*( 32*a-λ*y) = 0 → y=32*a/λ

Cy - λ*Vy = 0  → (4*a*y + 32*a*x) - λ*2*x*y = 0

4*a*32/λ  + 32*a*x - λ*2*x*32*a/λ = 0

128*a² /λ +  32*a*x - 64*a*x = 0

32*a*x = 128*a² /λ

x  = 4*a/λ

x*y² = b

4*a/λ * (32*a/λ)² = b

(a/λ)³ *4096 =  8000 m³

(a/λ) = ∛ ( 8000 m³/4096 ) = 5/4 in

then

x  = 4*a/λ = 4*5/4 in = 5 in

y=32*a/λ = 32*5/4 in = 40 in

then the box has dimensions 5 in x 40 in x 40 in

3 0
3 years ago
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