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3 years ago

Please answer these three or at least two of them thank you 1. = 2. = 3. =

Mathematics

1 answer:

Andrew [12]3 years ago

5 0

Answer:

1 conductors

2 insulators

3.Modern turnout jackets and pants are made of fire resistant fabrics (mainly Aramids such as Nomex and Kevlar) or polybenzimidazole (PBI).

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An apartment building has 35 floors with 12 apartments on each floor. There are 300 apartments that have 2 bedrooms. The rest of

Lena [83]

Answer:

120 is the answer, if we multiply 35×12= 420 apartments and there is 300 with 2 bedrooms. 420-300= 120 apartments with 1 bedroom. I hope it was helpful!

4 0

3 years ago

If a and b are the roots of 11x^2-4x-2=0 then compute the product: (1+a+a^2+...)(1+b+b^2+...)

lisov135 [29]

Answer:

11/5

Step-by-step explanation:

FirLet a and b be the roots of 11x^2-4x-2=0

Now $(1+a+a^2+\cdots)(1+b+b^2+\dcots)=\frac{1}{1-a}\cdot \frac{1}{1-b}\\=\frac{1}{(1-a)(1-b)}=\frac{1}{1-(a+b)+ab}$

Dividing the quadratic equation by 11 we have

$x^2-\frac{4}{11}x-\frac{2}{11}=0.$

Now the sum of the roots is the minus of the coefficient of x and the product of the roots is the constant. Therefore

$a+b = 4/11 \\ab = -2/11$

and we have

$\frac{1}{(1-a)(1-b)}=\frac{1}{1-\frac{4}{11}-\frac{2}{11}}\\=\frac{1}{(5/11)}=\frac{11}{5}$

6 0

3 years ago

The rectangles shown below are similar.

Fynjy0 [20]

Answer:

12/4 = L/8

Step-by-step explanation:

.......................

7 0

3 years ago

A baker is using two different cake molds. A round mold with diameter 8in and height 2in, and a rectangular mold with dimensions

miv72 [106K]

Answer: The cake density is 0.454 ounce per cubic inch and the fair price is $0.20 per ounce. What should be a fair price for each cake?

Step-by-step explanation:The cake density is 0.454 ounce per cubic inch and the fair price is $0.20 per ounce. What should be a fair price for each cake?

8 0

3 years ago

Alexeev081 [22]

Answer:

Radius of sphere = 3 feet

Step-by-step explanation:

The volume of sphere is 36 π ft³.

We need to find the radius of sphere.

The formula used is: $Volume\:of\:sphere=\frac{4}{3}\pi r^3$

Putting value of volume and finding radius

$Volume\:of\:sphere=\frac{4}{3}\pi r^3\\36\pi =\frac{4}{3}\pi r^3\\r^3=36 \pi \times \frac{3}{4\pi} \\r^3=9 \times 3\\r^3=27\\Taking\:cube\;root\:on \:both\:sides\\\sqrt[3]{r^3}=\sqrt[3]{27}\\r=3$

So, Radius of sphere = 3 feet

6 0

3 years ago