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valentinak56 [21]
3 years ago
9

Graph the ordered pairs for y=4x+2 using x={-2,1,2}

Mathematics
1 answer:
shepuryov [24]3 years ago
6 0
Y=4 (-2)+ 2. -6
y=4 (1)+2. 6
y=4 (2)+2. 10
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Which expression is equivalent to 3i(9i +15)?<br> - 45 +9i<br> -27 + 452<br> 27 +452<br> 2722 + 452
vaieri [72.5K]

Answer: B. -27+452i

Step-by-step explanation: Simplify the real and imaginary parts of the expression.

Hope this helps you out.

3 0
3 years ago
I got 2 questions.
alexandr402 [8]

Answer:

1. In triangle ABC,

AC = a = 10, BC =b= 7 and ∠ C = 90°

By cosine law,

AB^2 = 7^2 + 10^2 - 2\times 7\times 10 cos 90^{\circ}

AB^2 = 49 + 100 - 0

AB^2 = 149

AB= \sqrt{149}

Now, by the law of sine,

\frac{sin B}{10} = \frac{sin90^{\circ}}{\sqrt{149} }

sin B = \frac{10}{\sqrt{149} }

\angle B = 55.0079798014\approx 55.008^{\circ}

2. In triangle ABC,

∠B = 30°,  AB=c=10 and ∠C = 90°

∠A = 180°-(30+90)°=60°

\frac{AC}{10}=sin30^{\circ}

⇒ AC = \frac{10}{2} = 5

By Pythagoras,

CB^2 = AB^2 - AC^2=10^2 - 5^2 = 100 - 25 = 75

⇒ CB = \sqrt{75} =8.66025403784\approx 8.66



6 0
4 years ago
Read 2 more answers
This table lists the coordinates of points on a line. What is the y-intercept of the line?
alexgriva [62]

Answer:

The line intercepts the y-axis and y = 8

Step-by-step explanation:

The intersection on the y-axis of a line is found to be x = 0.

That is, the intercept with the y-axis is the value of the function when x is equal to zero.

In this case we know the following points of the function:

x  : -2    -1    0    1     2    3

y  : 16    12   8    4    0   -4

Note that when x = 0 then y = 8.

Therefore the line intercepts the y-axis and y = 8

3 0
3 years ago
A square with an area of 64 in2 is rotated to form a cylinder. What is the radius of the cylinder?
romanna [79]
The area of the square is calculated through the equation,

                               Area = e²

where e is the measure of sides.
 
From the given,

                              64 = e²
                               e = sqrt 64 = 8 inches

The length of the side of the square rotated to form the cylinder is the diameter of the base of the cylinder. To get the radius, we divide the diameter by 2.

                             radius = 8 inches / 2 = 4 inches

Thus, the radius of the cylinder is equal to <em>4 inches</em>. 
5 0
4 years ago
7,4,2,98,3,x <br> what number is x if the range equals 8
svetlana [45]

Answer: x=90

Step-by-step explanation:

because the range is 8, and the highest value in the data set is 98, x must equal 96

5 0
3 years ago
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