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3 years ago

Find the perimeter 8ft 11ft

Mathematics

2 answers:

Likurg_2 [28]3 years ago

8 0

Answer:

38ft

Step-by-step explanation:

I'm assuming that you mean that the dimensions are 8ft by 11ft

If so, you need to add all the sides together, there should be two 8ft sides and two 11ft sides

8*2 = 16 (or 8+8

11*2= 22 (or 11+11

16+22 = 38

Irina18 [472]3 years ago

4 0

8x2=16 and 11x2=22 all you have to do is add 16+22 and that gives you 38 i hope this helped

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The mass of the part of a metal rod that lies between its left end and a point x meters to the right is 4x2 kg. (See this exampl

Ganezh [65]

Answer:

A) 32 kg/m

B) 48 kg/m

C) 72 kg/m

Step-by-step explanation:

We are given mass is; m = 4x²

Linear density is the derivative of mass with respect to the position x. So linear density is;

ρ = dm/dx

Differentiating 4x²,we have; ρ = 8x

A)at x = 4; ρ = 8(4) = 32 kg/m

B) at x = 6; ρ = 8(6) = 48 kg/m

C) at x = 9; ρ = 8(9) = 72 kg/m

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3 years ago

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liraira [26]

Answer:

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Step-by-step explanation:

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3 years ago

A tea that is 22% jasmine is blended with a tea that is 13% jasmine. How many pounds of the 22% jasmine tea are used to make 10l

tatiyna

Given

A tea that is 22% jasmine is blended with a tea that is 13% jasmine

Find out the how many pounds of the 22% jasmine tea are used to make 10lb of tea that is 19.3% jasmine.

To proof

Let us assume that the a tea that is 22% jasmine is blended = a

Let us assume that the a tea that is 13% jasmine is blended = b

Total amount of tea made = 10lb

the equation be

a + b = 10

as given

jasmine tea are used to make 10lb of tea that is 19.3% jasmine.

write 22% in the decimal form

$= \frac{22}{100}$

= 0.22

write 13% in the decimal form

$=\frac{13}{100}$

= 0.13

write 19.3% in the decimal form

$=\frac{19.3}{100}$

= 0.193

than the equation be

0.22a + 0.13b = 0.193 × 10

on simplify

22a + 13b = 193

two equation becomes

22a + 13b = 193 and a + b = 10

multiply a + b = 10 by 13 and subtracted from the 22a + 13b = 193

we get

22a - 13a + 13b -13b = 193 - 130

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a = 7lb

put this value in the a + b = 10

we get

7 + b = 10

b = 3lb

Therefore the 22% jasmine tea are used to make 10lb of tea that is 19.3% jasmine is 7 lb .

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3 years ago

Resistors. An electrical engineer has two boxes of resistors, with four resistors in each box. The resistors in the first box ar

Dafna11 [192]

Answer:

A. Sample Space = S = {(9, 18),(9, 19),(9, 20),(9, 21),(10, 18),(10, 19),(10, 20),(10, 21),(11, 18),(11, 19),(11, 20),(11, 21),(12, 18),(12, 19),(12, 20),(12, 21)}

B. {(9, 18),(10, 18),(11, 18),(12, 18)}

C. {(9, 18),(9, 19),(10, 18)}

D. {(9, 18),(9, 19),(10, 18),(11, 18),(12, 18)}

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Step-by-step explanation:

The Sample Space would contain each element of the box A associated with each element of the box B.

A. Sample Space = S = {(9, 18),(9, 19),(9, 20),(9, 21),(10, 18),(10, 19),(10, 20),(10, 21),(11, 18),(11, 19),(11, 20),(11, 21),(12, 18),(12, 19),(12, 20),(12, 21)}

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J= {(9, 18),(10, 18),(11, 18),(12, 18)}

C. Let the outcomes in the event C, the event that the sum of the resistances is equal to 28 be denoted by L then

L = {(9, 18),(9, 19),(10, 18)}

D. The outcomes in B∪C contains all the elements of B and C

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E. B complement contains those elements of the Sample Space which are not the elements of Set B.

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B(complement) ∩C contains those elements of B and C which are common to both B complement and C.

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