All categories

3 years ago

Here is 50 points:) have a great day

Mathematics

2 answers:

Orlov [11]3 years ago

6 0

Answer:

Thanks have a good day and good luck!!!!!

Stella [2.4K]3 years ago

4 0

Answer:

tysm

Step-by-step explanation:

you're the best <3

You might be interested in

Like y'all is so nice for helping me because this work is so hard so can yall help me and i will give barinlest☺️

ELEN [110]

Answer:

The answer is A I hope it’s right

Step-by-step explanation:

405-319=86

5 0

3 years ago

Which of the following expressions represents the expanded version of the expression

maxonik [38]

Answer:

4th option

Step-by-step explanation:

7x(8x² - 4y² + 3y - 5) ← multiply each term in the parenthesis by 7x

= 56x³ - 28xy² + 21xy - 35x

4 0

3 years ago

What is the value of y in the equation 4 + y = −3?

omeli [17]

4 + y = -3

subtract 4 from each side

y = -3-4

y = -7

4 0

3 years ago

A closed, rectangular-faced box with a square base is to be constructed using only 36 m2 of material. What should the height h a

kkurt [141]

Answer:

$b=h=\sqrt{6}$ m

Step-by-step explanation:

Let

Bas length of box=b

Height of box=h

Material used in constructing of box=36 square m

We have to find the height h and base length b of the box to maximize the volume of box.

Surface area of box= $2b^2+4bh$

$2b^2+4bh=36$

$b^2+2bh=18$

$2bh=18-b^2$

$h=\frac{18-b^2}{2b}$

Volume of box, V= $b^2h$

Substitute the values

$V=b^2\times \frac{18-b^2}{2b}$

$V=\frac{1}{2}(18b-b^3)$

Differentiate w. r.t b

$\frac{dV}{db}=\frac{1}{2}(18-3b^2)$

$\frac{dV}{db}=0$

$\frac{1}{2}(18-3b^2)=0$

$\implies 18-3b^2=0$

$\implies 3b^2=18$

$b^2=6$

$b=\pm \sqrt{6}$

$b=\sqrt{6}$

The negative value of b is not possible because length cannot be negative.

Again differentiate w.r.t b

$\frac{d^2V}{db^2}=-3b$

At $b=\sqrt{6}$

$\frac{d^2V}{db^2}=-3\sqrt{6}$

Hence, the volume of box is maximum at $b=\sqrt{6}$ .

$h=\frac{18-(\sqrt{6})^2}{2\sqrt{6}}$

$h=\frac{18-6}{2\sqrt{6}}$

$h=\frac{12}{2\sqrt{6}}$

$h=\sqrt{6}$

$b=h=\sqrt{6}$ m

7 0

3 years ago

If math were a weather, what type of weather would it be and why?

drek231 [11]

Answer: a thunderstorm

Step-by-step explanation:

B/c there is more than one way to do math but if you don’t do it a specific way at a certain time then it becomes a problem.

8 0

2 years ago