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zimovet [89]
2 years ago
10

8 less than twice a number is twelve .

Mathematics
2 answers:
kvv77 [185]2 years ago
8 0
8 - -2×2=12.............
Andreyy892 years ago
8 0

The answer is 12 = 2x - 8, where x represents the unknown number.

12 = 2x - 8

20 = 2x

x = 10

The unknown number is ten.



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Y=1/2x +5<br> Y=-3/2x-7<br> Find x and y
gayaneshka [121]
I'm going to use the substitution method. 

If y = - 3/2 - 7, then:

1/2x + 5 = - 3/2x - 7

Combine like terms: 

4/2x = - 12. Mutiply both sides by 2/4 to get x = -12 (2/4)

Simplify to get:

x = - 6.

Plug - 6 back in for x in either equation.

Y = 1/2( - 6) + 5 which becomes Y = - 3 + 5.

X = - 6, Y = 2





8 0
3 years ago
What does y= 4x+rx+6 equal? (Solve for x) show all steps please!!
polet [3.4K]
Move all terms to the left side and set equal to zero. then set each factor equal to zero .

x = - 6 - y
______
4 + r
7 0
3 years ago
Write the first five terms of the sequence defined by the explicit formula
denis-greek [22]

<u>Answer:</u>

The correct answer option is: 19, 13, 3, -11, -29.

<u>Step-by-step explanation:</u>

We are given the following explicit formula for an arithmetic sequence:

a_n=21-2n^2

So to find the first five terms of this sequence, we will substitute the values of n (num here in the given formula:

a_1=21-2(1)^2\\\\a_1=19


a_2=21-2(2)^2\\\\a_2=13


a_3=21-2(3)^2\\\\a_3=3


a_4=21-2(4)^2\\\\a_4=-11


a_5=21-2(5)^2\\\\a_5=-29

Therefore, the first five terms of the sequence defined by the explicit formula a_n=21-2n^2 are 19, 13, 3, -11, -29.


5 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIST SOON AS I CAN. please help.​
VARVARA [1.3K]

Answer:

201.2

Step-by-step explanation:

area= s^2n

        -----------  ( 180)

         4+9        ---------

                          ( n )

Area equals S squared n over four plus nine times ( 180 over n )

5 0
3 years ago
2/3 divided by 5 is it 2/3 times 1/5=2/15
drek231 [11]

(2/3)/5

Yes. (2/3)/5 is the same as 2/15 because:

(2/3) = (0.67)/5 = 0.133 (continuing)

(2/15) = 0.133 (countinuing)

hope this helps

4 0
3 years ago
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