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3 years ago

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Lapatulllka [165]3 years ago

6 0

Could you show a picture so i could understand a little bit better?

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I need help on 1,2,3

vladimir2022 [97]

Answer:

1. 10x + 14

2. 2x + 11y - 7

3. -10x - 11

Step-by-step explanation:

1.

$4x+5+7x-3+x+12=\\10x+14$

2.

$(7x+9y-1)-(5x-2y+6)=\\7x+9y-1-5x+2y-6=\\2x+11y-7$

3.

$-2(2x+5)-6x-1=\\-4x-10-6x-1=\\-10x-11$

4 0

3 years ago

Read 2 more answers

11.3x + 7.2 = 86.3<br><br> A) 0.7<br> B) 7<br> C) 8<br> D 8.3

Gnom [1K]

11.3x + 7.2 = 86.3

11.3x + 7.2 (-7.2) = 86.3 (-7.2)

11.3x = 79.1

11.3x/11.3 = 79.1/11.3

x = 7

7 is your answer

hope this helps

8 0

4 years ago

The 3rd term of a geometric sequence is -1/3 and the 8th term is 81. what is the 11th term?

shepuryov [24]

Answer: $t_{11}=-2187$

Step-by-step explanation:

$t_{3}=-1/3$

That is :

$ar^{2} = -1/3$ ................. equation 1

Also

$t_{8}=81$

that is

$ar^{7}=81$ ................. equation 2

divide equation 2 by equation 1 , that is

$\frac{ar^{7}}{ar^{2}} = 81 / -1/3$

$r^{5}=$ $81$ x $-3/1$

$r^{5}= -243$

find the fifth root of both sides

$r = -3$

substitute $r = -3$ , into equation 1 to find a , that is

$a(-3^{2})= -1/3$

$9a = -1/3$

multiply through by 3

$27a = -1$

$a =- 1/27$

To find the 11th term , the formula for the 11th term is given as :

$t_{11}=ar^{10}$

$t_{11}= -1/27(-3^{10})$

$t_{11}=-2187$

6 0

4 years ago

Select all that are like terms to 5a5b4

Sunny_sXe [5.5K]

None of them are like terms you have 5a 5b and 4

6 0

4 years ago

Read 2 more answers

These numbers are either whole numbers, or the negatives of whole numbers. They are called ______. Example: ... -4, -3, -2, -1,

ioda

They are called integers

8 0

3 years ago

Read 2 more answers