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scZoUnD [109]
3 years ago
6

Find the product. the coefficient of the product of (-5xy^2) and (-4x^2y) is

Mathematics
2 answers:
Art [367]3 years ago
8 0
(-5xy^2)(-4x^2y)=5xy^2\times4x^2y=20x^1y^2x^2y^1=20x^{1+2}y^{2+1}=20x^3y^3
Lady bird [3.3K]3 years ago
6 0
The answer is 20x^3 y^3

I hope this helps!!
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9. Find the area of a circle having a circumference of 382. Round to the nearest tenth. Use 3.14 for 1.
mojhsa [17]

Answer:

the answer wouldn't be up there. it is 11612.26

Step-by-step explanation:

4 0
2 years ago
If you start with a number, add 2/5, then multiply by 7, the result is 6 3/10. What was the original number?
Anettt [7]
(x+2/5)7=63/10
then divide both sides by 7
x+2/5=63/70
subtract 2/5 from both sides
and x= 1/2 

*x=original number
3 0
3 years ago
Triangular numbers can be represented with equilateral triangles formed by dots the first fire triangle numbers are 1 3 6 10 and
zhannawk [14.2K]

Answer:

There's no direct variation

Step-by-step explanation:

Required

Determine if there's a direct variation between the number and its position

I'll start by giving an illustration of how the triangle is represented using stars (*)

*

**

***

****

*****

Represent the line number with y and it's position with x

On line 1:

y = 1, x = 1

On line 2:

y = 2, x = 3

On line 3:

y = 3, x = 6

On line 4:

y = 4, x = 10

On line 5:

y = 5, x = 15

Note that, x is gotten by calculating the accumulated number of stars while y is the line number.

Direct variation is represented by

y = kx

Or

kx = y

Where k is the constant of variation

For line 1:

Substitute 1 for y and 1 for x

k * 1 = 1

k = 1

For line 2:

Substitute 2 for y and 3 for x

k * 3 = 2

Divide through by 3

k = ⅔

Note that the values of k in both computations differ.

This implies that there's no direct variation and there's no need to check further.

3 0
2 years ago
If the annual interest rate is 2.8% then the weekly rate is
user100 [1]

Answer:

0.0538% (3 sf)

Step-by-step explanation:

annual = 1 yr = 12 months = 52 weeks

2.8% / 52 = 0.053846153

3 0
2 years ago
You roll a 10 sided die. What is the probability of rolling a odd number and less than 4?
zzz [600]

Answer:

Probability of it being odd would be one half, and for less than four would be 2/10

Step-by-step explanation: Since it can only be odd the chance for it landing on odd is half.

then since it has to be lower than 4, and since there's only 1, and 3  that are odd and lower than four you would only have a 20 perecent chance of it landing on 1 or 3

8 0
3 years ago
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