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2 years ago

Can anyone help me ASAP!

Mathematics

2 answers:

Margarita [4]2 years ago

8 0

Answer:

h=15 m

Step-by-step explanation:

the formula for figuring out triangle side lengths is called the pythagorean theorem. it says a^2+b^2=c^2. c is always the hypotenuese of the triangle. we are trying to find he height not the hypotenuese so we say c^2-b^2=a^2.

17^2-8^2=h

289-64=225

h= the square root of 225

h= 15 m

love history [14]2 years ago

5 0

Answer: c 14m

Step-by-step explanation: hope this helped

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A box of volume 180 m3 with square bottom and no top is constructed out of two different materials. The cost of the bottom is $4

zysi [14]

Answer:

Side of square bottom=6.46 m

Height of box=4.31 m

Step-by-step explanation:

Let s be the side bottom

Height of box=h

Volume of box= $180m^3$

Volume of box= $lbh=s^2h$

$s^2h=180$

$h=\frac{180}{s^2}$

Cost of bottom=$40 per square m

Cost of sides =$30 per square m

Total cost= $C=40s^2+30(4sh)$

$C=40s^2+120s\times \frac{180}{s^2}$

$C(s)=40s^2+\frac{21600}{s}$

Differentiate w.r.t s

$C'(s)=80s-\frac{21600}{s^2}$

$C'(s)=0$

$80s-\frac{21600}{s^2}=0$

$80s=\frac{21600}{s^2}$

$s^3=\frac{21600}{80}=270$

$s=(270)^{\frac{1}{3}}=6.46$

Again,differentiate w.r.t s

$C''(s)=80+\frac{43200}{s^3}$

Substitute s=6.46

$C''(6.46)=80+\frac{43200}{(6.46)^3}=240.2>0$

Hence, the cost is minimum at s=6.46

$h=\frac{180}{s^2}=\frac{180}{(6.46)^2}=4.31$

Side of square bottom=6.46 m

Height of box=4.31 m

5 0

2 years ago

What's the answer? It's urgent 4^3 divided by 8 - 1 + 5 divided by 8

posledela

Answer:

42.66666667

Step-by-step explanation:

I did it in my calculator

6 0

2 years ago

What is the equation in point-slope form for the line parallel to y = -2x - 4 that contains J(-8, 1)?

Aleksandr [31]

The answer is letter b. y - 1 = 2(x + 8)
This can be proofed by the formula of point-slope form.

4 0

2 years ago

Need help for this one!

WARRIOR [948]

I THINK IT'S ASA OR SSS ..

6 0

1 year ago

Michelle has a maximum of 4500 milliliters of water for her plants today. Each basil plant requires 350 of water, and each fenn

anyanavicka [17]

The inequality becomes :

350B+525F≤4500

Explanation:

Let the number of basil plants be represented by = B

Let the number of fennel plants be represented by = F

As each basil plant needs 350 ml of water, so B basil plants will need 350*B = 350B ml of water

Similarly, each fennel plant needs 525 ml of water so F fennel plants will need 525*F = 525F ml of water.

And both the plants need to be watered with a maximum of 4500 ml of water.

So inequality becomes: 350B+525F≤4500

6 0

2 years ago