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adoni [48]
3 years ago
5

PLEASE ANSWER CORRECTLY THANKS

Mathematics
2 answers:
Oksana_A [137]3 years ago
4 0

Answer:

  1. B
  2. A
  3. B

Step-by-step explanation:

......................

Ainat [17]3 years ago
3 0

9514 1404 393

Answer:

  1. A
  2. A
  3. A

Step-by-step explanation:

Comparing the graph of d(x) (blue) to that of the original function (red), we see that it is shifted up 5, right 1/2, and has its frequency increased by a factor of 2.

These transformations correspond to your letter choices A, A, A.

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Solve 3x+2y=4 4x+3y=7 algebraically
Leona [35]
Step 1. Multiply first equation with -3 and the second one with 2. You'll get:
\left \{ {{-9x-6y=-12} \atop {8x+6y=14}} \right.

Step 2. Add both equations together. You'll get:
-x=2, which gives x = -2

Step 3. Replace x = -2 in the first equation and calculate y.
3(-2)+2y=4\\
y=\frac{4+6}{2}=5

The solution is: x=-2, y=5
8 0
3 years ago
8. You are planning to use a ceramic tile design in your new bathroom. The tiles are blue-and-white equilateral triangles. You d
ira [324]

Step 1

Find the area of one equilateral triangle

Applying the law of sines

Area=\frac{1}{2} *a*b*sin C

in this problem

a=b=7 cm

C=60 degrees

so

Area=\frac{1}{2} *7*7*sin 60

Area=\frac{1}{2} *49*\frac{\sqrt{3}}{2}  \\ Area=49*\frac{\sqrt{3}}{4}cm²

Step 2

To calculate the area of the hexagon multiply the area of one equilateral triangle by 6

Area Hexagon=6*[49*\frac{\sqrt{3}}{4}]  \\ Area Hexagon=73.5*\sqrt{3}cm²

therefore

the answer is the option

73.5 sqrt 3cm²

3 0
3 years ago
Read 2 more answers
HELP ME!!!
larisa [96]

Answer:

  -2, 8/3

Step-by-step explanation:

You can consider the area to be that of a trapezoid with parallel bases f(a) and f(4), and width (4-a). The area of that trapezoid is ...

  A = (1/2)(f(a) +f(4))(4 -a)

  = (1/2)((3a -1) +(3·4 -1))(4 -a)

  = (1/2)(3a +10)(4 -a)

We want this area to be 12, so we can substitute that value for A and solve for "a".

  12 = (1/2)(3a +10)(4 -a)

 24 = (3a +10)(4 -a) = -3a² +2a +40

  3a² -2a -16 = 0 . . . . . . subtract the right side

  (3a -8)(a +2) = 0 . . . . . factor

Values of "a" that make these factors zero are ...

  a = 8/3, a = -2

The values of "a" that make the area under the curve equal to 12 are -2 and 8/3.

_____

<em>Alternate solution</em>

The attachment shows a solution using the numerical integration function of a graphing calculator. The area under the curve of function f(x) on the interval [a, 4] is the integral of f(x) on that interval. Perhaps confusingly, we have called that area f(a). As we have seen above, the area is a quadratic function of "a". I find it convenient to use a calculator's functions to solve problems like this where possible.

5 0
3 years ago
Malcolm ran the 440 yard dash and the 220 yard dash at a track meet.there are 3 feet in one yard . How many total feet did Malco
SVETLANKA909090 [29]
Add both of thr meters together (660 meters) and multiply by 3 (the feet). you should get 1980 feet
6 0
3 years ago
Subtract -1/2n - (-1/2n)
9966 [12]
Answer: 0
Explanation:
-1/2n -(-1/2n)
= -1/2n + 1/2n
= 0
8 0
3 years ago
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