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3 years ago

What is the value of the following expression. 2×{6+[12÷(3+1)]}-1

2 answers:

8 0

I got 83. I got it by doing 3+1 first because it was the FIRST parenthesis. Then I did 12 divided by 4 then that equaled 3 and since the 3 would still be in parenthesis you times that by 12 and get 36. You then do 36 + 6 which is 42. 42 x 2 = 84. Lastly 84 - 1 = 83 I hoped this helped and I'm sorry if I was a little bit confusing!

NeX [460]3 years ago

5 0

I got 6
For
The answer

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Factor the expression. 10y+15+25y

defon

Answer:

25y+15

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Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The function f(x) = − x^2+ bx +1 is shown in the graph. What is the value of b?

denis-greek [22]

Answer:

b = 4

Step-by-step explanation:

the equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k ) are the coordinates of the vertex and a is a multiplier

here ( h, k ) = (2, 5 ) , then

y = a(x - 2)² + 5

to find a substitute any point on the parabola into the equation

using (0, 1 ) then

1 = a(0 - 2)² + 5 ( subtract 5 from both sides )

- 4= a(- 2)²= 4a ( divide both sides by 4 )

- 1 = a

then

y = - ( x - 2)² + 5

= - (x² - 4x + 4) + 5

= - x² + 4x - 4 + 5

= - x² + 4x + 1 ← in the form ax² + bx + c

with b = 4

5 0

2 years ago

Which statements are true about the ordered pair(-1, -4) and the system of equations?

Lesechka [4]

Answer:

a) when (-1,-4) is substituted into the first equation

then the equation is satisfied

b) The ordered pair(-1, –4) is a solution to the system of linear equations.

Step-by-step explanation:

Step(i):-

Given that the system of equations

x -y =3 ...(i)

7x -y =-3 ...(ii)

subtracting (i) and (ii) equations , we get

x -y -(7x-y) = 3 -(-3)

x - y - 7x + y = 6

- 6x = 6

x = -1

Step(ii):-

Substitute x=-1 in equation (i), we get

x -y =3

-1 -y = 3

y = -1-3

y = -4

The solution of the given system of equations (-1,-4)

Final answer:-

a) when (-1,-4) is substituted into the first equation

then the equation is satisfied

b) The ordered pair(-1, –4) is a solution to the system of linear equations.

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Ilia_Sergeevich [38]

Answer:

the answer is (0,2) (7,8)

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Schach [20]

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