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Wewaii [24]
2 years ago
13

Solv for x,y,and z brainliest

Mathematics
1 answer:
Ratling [72]2 years ago
8 0

Answer:

Step-by-step explanation:

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Need help please thx you
erma4kov [3.2K]
$72.

20% of 60 is 12

$12 + $60 = $72
6 0
3 years ago
Six identical squares are cut from the corners and edges of an 80 cm by 50 cm cardboard rectangle. the remaining piece is folded
Anna11 [10]
Check the picture.

let the length of a side of each of the squares removed be x.

The box formed will have dimensions: 80-2x, 50-2x, x(the height)

So the volume can be expressed as a function of x as follows:

f(x)=(80-2x)(50-2x)x=[4000-160x-100x+4 x^{2} ]x=(4 x^{2}-260x+4000)x

so f(x)=4 x^{3}-260x^{2}+4000x

the solutions of f'(x)=0 gives the inflection points, so the candidates for maxima points,

f'(x)=12x^{2}-520 x +4000=0

solving the quadratic equation, either by a calculator, graphing software, or by other algebraic methods as the discriminant formula, we find the solutions

x=10 and x=33.333

plug in f(x) these values to see which greater:

f(10)=(80-20)(50-20)10=60*30*10=18000 cm cubed

f(33.333)=(80-66.666)(50-66.666)33.333= which is negative because (50-66.666)<0



Answer: 18000 cm cubed

5 0
2 years ago
Read 2 more answers
5 rows of 4 snack-size boxes of cereal in its bottom layer and is 3 layers high
leva [86]
For this problem, you're finding volume. The expression for volume is l•w•h (length times width times height). 
5 0
3 years ago
Suppose that 20% of students at high school A and 18% of students at high school B participate on a school athletic team. Indepe
daser333 [38]

Answer:

let me answer this and i will come back

Step-by-step explanation:

7 0
3 years ago
Help me pls pls pls i really need help
Monica [59]
The answer is A..... 2 2/3
8 0
2 years ago
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