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Alex17521 [72]
3 years ago
9

Did I do this right?

Mathematics
1 answer:
zavuch27 [327]3 years ago
8 0

Answer:

3CuCl2 + 2Ni → 3Cu + 2NiCl3

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What is the coefficient in the expression 5 + 9y?
LenKa [72]

Answer:

yesyes

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
1. A farmer wants to build a fence around a rectangular area of his farm with one side of the region against his barn. He has 76
Arte-miy333 [17]

Answer:

19 ft by 38 feets

Step-by-step explanation:

Given that :

Available fencing = 76 feets

Rectangular fencing with 3 sides

Let the 3 sides be :

x, x, y

x + x + y = 2x + y = 76

y = 76 - 2x

Area = x * y = xy

Area = (76 - 2x) * x

Area = 76x - 2x²

Take derivative of Area with respect to x ; dA

dA /dx = 76 - 4x = 0

76 - 4x = 0

-4x = - 76

x = 76 / 4

x = 19

2x + y = 76

2(19) + y = 76

38 + y = 76

y = 76 - 38

y = 38

Hence, dimension : 19feet by 38 feets

5 0
3 years ago
Does anyone have the answers for the rest of this or know the answers ?
irga5000 [103]

Answer:

4.

a)  4x^4-4x^3-16x^2+16x

b)  4x^4-4x^3-16x^2+16x

5. Yes

Step-by-step explanation:

The distributive property is:

(a+b)(c+d)=ac+ad+bc+bd

It can be extended to a lot of terms as well.

We will use this to multiply both of the probelms shown.

4 a)

(4x^2-4x)(x^2-4)=(4x^2)(x^2)-(4)(4x^2)-(4x)(x^2)+(4x)(4)=4x^4-16x^2-4x^3+16x=4x^4-4x^3-16x^2+16x

The answer is 4x^4-4x^3-16x^2+16x

4 b)

(x^2+x-2)(4x^2-8x)=(x^2)(4x^2)-(8x)(x^2)+(x)(4x^2)-(8x)(x)-(2)(4x^2)+(2)(8x)=4x^4-8x^3+4x^3-8x^2-8x^2+16x=4x^4-4x^3-16x^2+16x

The answer is  4x^4-4x^3-16x^2+16x

5. Yes

4 0
3 years ago
A factory worker packed 12 boxes at a constant rate, took a 30-minute break, and then continued packing the boxes at twice the r
Daniel [21]

Answer:

A - 4.5<t<24

Step-by-step explanation:

7 0
3 years ago
The amount of W water used varies directly with the population N of people. City A has a population of 468,000 people and used 3
ladessa [460]

Answer:

the anser is 36.6 gallos of weeding in the w

Step-by-step explanation:

6 0
3 years ago
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