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san4es73 [151]
2 years ago
10

Factor completely, then place the answer in the proper location on the grid. 21a^2- 57a+30

Mathematics
1 answer:
aev [14]2 years ago
6 0

Answer:

(a^2 - 10)(3+7)

Step-by-step explanation:

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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
Based on the table below, evaluate f(1).
Jobisdone [24]

Answer:

f(1) = 24

Step-by-step explanation:

f(1) is the value of f(x) when x = 1, that is from the table

f(1) = 24

3 0
2 years ago
Help please asap with this​
Allushta [10]
Use photo math app it will help you

The second one 1.7 = 17/10
-0.048 = -6/125
98% = 98/100= 49/50
5 0
2 years ago
ASAP!! ILL GIVE BRAINLEST
densk [106]

Answer:

A^-1:B^-1

Step-by-step explanation:

im not 100% sure but i think this is the right answer :)

8 0
3 years ago
What is 55 plus 65 plus 60 ​
jasenka [17]

Answer:

180

Step-by-step explanation:

calculator.

4 0
3 years ago
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