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yan [13]
3 years ago
8

Please answer this correctly

Mathematics
2 answers:
IceJOKER [234]3 years ago
5 0

Answer:

2 minutes 55 seconds

Step-by-step explanation:

Alik [6]3 years ago
3 0

Answer:

2 minutes 55 seconds

Step-by-step explanation:

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What is 1.62 in a fraction
Oxana [17]
1,62=162/100 simplifi 2 is 81/50.The answer is 81/50. Prob:81:50=1,62
7 0
3 years ago
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Red and grey bricks were used to build a decorative wall. The number of red bricks and grey bricks was 5/2. There were 140 brick
ozzi

Answer:

100 red bricks

Step-by-step explanation:

Let's say red bricks is equal to 5x

Gray bricks is equal to 2x

We have an equation

2x + 5x = 140

= 7x = 140

Divide through by 7 to get the value of x

X = 140/7

X = 20

Red bricks = 5(x)

= 5(20)

= 100

Gray bricks = 2(x)

= 2(20)

= 40

Therefore in conclusion the number of red bricks is 100.

5 0
2 years ago
Factor the polynomial:3x^3-x^2-15x+5
lina2011 [118]
(x^2-5)(3x-1)
Here's how I got this answer:
I found the GCF for each part of the polynomial.
3x^3 and -15x both contain 3x, and -x^2 and 5 share -1.
I then can divide the polynomial by 3x-1, and I get x^2-5
(Okay, that's not what I really did, but I can solve these on sight and don't remember the proper way to do it.)
6 0
3 years ago
fourteen boys and 21 girls will be equally divided into groups. Find the greatest number of groups that can be created if no one
shtirl [24]
Well if you add 14 and 21 you get 35. with 35 you can have 7 groups of 5 but if they have to be equal with the number of boys and girls in each group it would still be 7. two boys in each group with three girls in each group.
6 0
3 years ago
If 1000 square centimeters of material is available to make a box with a square base and an open top, find the largest possible
guapka [62]
<span>The area of the base is x^2> The height is h. Each side of the box has area xh. There are 4 sides of the box so the total surface area of the box is x^2+4xh and that is equal to 1000. Solve that equation for h: x^2+4xh = 1000 h = (1000-x^2)/4x so the Volume = x^2[(1000-x^2)/4x] Simplify and get V = 250x-x^3/4 The volume will be a maximum when its first derivative is 0. V' = 250-3/4x^2 Set to 0 and solve. x=18.26 Now plug into the volume function to find the maximum volume: V=250(18.26)-(18.26)^3/4 V= 4564.35 - 1522.10 =3042.25</span>
6 0
3 years ago
Read 2 more answers
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