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NeX [460]
3 years ago
10

[Grade 7 set 1]

Mathematics
2 answers:
Paladinen [302]3 years ago
7 0

Answer:

no but you could do y(y+1)

Veseljchak [2.6K]3 years ago
4 0

Step-by-step explanation:

No it would because you have to find the number for why and the two is the power so no it not going to be.

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Gary draws this sequence of patterns of white and grey squares. The sequence is continued. How many grey squares will there be w
zzz [600]

Answer:

20 gray squares

Step-by-step explanation:

Given

See attachment for squares

Required

Number of gray squares when white = 16

First, we calculate the equation that represents both squares.

<u>The white squares</u>

a = 2 --- initial

d = 4 - 2 = 6 - 4

d = 2 -- difference between successive gray squares

So, the nth term is:

W_n = a + (n - 1)d

W_n = 2 + (n - 1)*2

W_n = 2 + 2n - 2

W_n = 2n

<u>The gray squares</u>

a = 6 --- initial

d = 8-6=10-8

d = 2 -- difference between successive gray squares

So, the nth term is:

G_n = a + (n - 1)d

G_n = 6 + (n - 1) *2

G_n = 6 + 2n - 2

G_n = 4 + 2n

When the white squares is 16

W_n = 16 --- Calculate n

W_n = 2n

16 = 2n

8 = n

n = 8

To get the number of gray squares;

Substitute n = 8 in G_n = 4 + 2n

G_n = 4 + 2 * 8

G_n = 20

4 0
3 years ago
Will the ineqaulity symbol change its direction when you subtract 5 from both sides?
DaniilM [7]
No the inequality symbol only changed when you divide a negative number from both sides.
3 0
4 years ago
Read 2 more answers
Sam's total expenses last month were $1840. What was his total variable cost for last
likoan [24]

Answer:

$1500

Step-by-step explanation:

It is given that

Rent  = $100

Groceries and drinks = $1000

Insurance premiums   = $10

Loan interest payment  =$30

Clothes  = $200

Utilities  = $300

Home security fee  = $200​

Fixed cost are costs that does not vary and variable cost are costs that vary with goods and services.

In the given problem, rent , insurance premiums, loans interest payment ad home security fee are fixed cost.

Groceries and drinks, clothes and utilities are variable cost.

So, total variable cost for last month is

\text{Total variable cost}=\$1000+\$200+\$300=\$1500

Therefore, total variable cost for last month is $1500.

5 0
3 years ago
I NEED AN EXPERT ON SURFACE AREAS..Ill give extra points and brainless​
natta225 [31]

Answer:

60 is the area

Step-by-step explanation:

you just mult 12x5

7 0
3 years ago
Read 2 more answers
In a class of 20 students:
Artyom0805 [142]

Whats the question? I dont understand whats happenign here.

5 0
3 years ago
Read 2 more answers
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