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nadya68 [22]
3 years ago
15

Solve for a -4+2(3a-5)=(1-1a)

Mathematics
1 answer:
Kobotan [32]3 years ago
6 0
Distribute the two to each of the values in the parentheses.
-4 +6a-10= 1-1a

Then move like terms to the same side to simplify.
6a+1a=1+10+4
7a=15
a=15/7
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If the parabola y - 8 = 3(x - h)² has the line x = 5 as its axis of symmetry, find h.
Goshia [24]
h = 5 because if you added 8 to the other side of the equation, then the equation would be in vertex form, where the opposite of h, and the value of k (8) is your vertex. So, we know that the x-value of the vertex is also the axis of symmetry, so the axis of symmetry is also the x-value of the vertex, or h. 

Hope this helps! :)
4 0
3 years ago
On a coordinate plane, a piecewise function has 3 lines. The first line has an open circle at (negative 9, negative 2), continue
Arte-miy333 [17]

Answer:  D: x = (-9, 0) U (0, 4) U (4, 8)

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

Line 1:      y = -2               where      -9 < x < 0

Line 2:     y = 2)x + 1        where       0 < x < 4

Line 3:    y = -(1/2)x + 6    where       4 < x < 8

Domain represents the x-values.  Since all of them are open dots, the intervals are strictly less than (<).

-9 < x < 0   and   0 < x < 4   and   4 < x < 8 is the union of these intervals

-9 < x < 0   U   0 < x < 4   U   4 < x < 8

Interval Notation: D: x = (-9, 0) U (0, 4) U (4, 8)

6 0
3 years ago
HELP I NEED HELP ASAP
PtichkaEL [24]

Answer:

The answer is B

Step-by-step explanation:

5 0
3 years ago
A rain gutter is to be constructed of aluminum sheets 12 inches wide. After marking off a length of 4 inches from each edge, thi
marysya [2.9K]
For this problem, I think there is no need for the details of 12 inches width and 4 inches length. This is because an equation is already given. It was clearly specified that A as a function of θ represents the area of the opening. Then, we are asked to find exactly that: the area of opening. Moreover, the value of θ was also given. Therefore, I am quite sure that the initial details given are for the purpose of red herring only.

So, all we have to do is substitute θ=45° to the function given. 
A = 16 sin 45° ⋅ (cos 45° + 1)

The angle 45° is a special angle in trigonometry. So, it would be easy to remember trigonometric functions of this angle. Sine of 45° is equal to √2/2 while cosine of 45° is also √2/2.

A = 16(√2/2) ⋅ (√2/2 + 1)
A = 8+8√2
A = 19.31 square inches
8 0
4 years ago
Read 2 more answers
Which value of x is a solution of the inequality? ​
Levart [38]
Hello, and thank you for posting your question here on brainly.

A correct answer to this can be B. x = 3 look at the work provided below. 

Subtract 5 from both sides, to remove it.

3x + 5 ≤ 14 ==> 3x ≤ 9

Divide both sides by 3, to remove it.

3x ≤ 9 ===> x ≤ 9/3

Solve 9/3.

x ≤ 9/3 ===> x ≤ 3

Hope this helps! ☺♥
5 0
3 years ago
Read 2 more answers
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