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tia_tia [17]
3 years ago
10

How many vertices does a polyhedron have with 5 faces 3 rectangles and two triangles​

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0

Answer:

It has six vertices.

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Write a slope intercept equation for a line passing through the point (4,-2) that is parallel to the line 4x+5y=7. Then write a
LuckyWell [14K]

First, the equation needs to be put into slope-intercept form, which is y = -4/5x + 7/5. Then, you need to know what parallel and perpendicular lines are. REMEBER, parallel lines have the same slope, and perpendicular lines have slopes whose product equal -1. You just need to substitute. For the parallel line, -2 = -4/5(4) + b, and b = 6/5, so y = -4/5x + 6/5. For the perpendicular line, the slope is 5/4. Now substitute. -2 = 5/4(4) + b, and b = -7, so y = 5/4x -7.

3 0
3 years ago
Match the measureable quantity given by its formula with the appropriate unit(s).
kompoz [17]

Good morning ☕️

___________________

Step-by-step explanation:

Look at the photo below for the details.

3 0
3 years ago
What is an equation in point-slope form for the line perpendicular to y = 7x + 14 that contains (3, –7)?
umka21 [38]

The equation of the perpendicular line is y + 7 = -1/7(x - 3)

<h3>How to determine the line equation?</h3>

The equation is given as

y = 7x + 14

Also, from the question

The point is given as

Point = (3, -7)

The equation of a line can be represented as

y = mx + c

Where

Slope = m

By comparing the equations, we have the following

m = 7

This means that the slope of y = 7x + 14  is 7

So, we have

m = 7

The slopes of perpendicular lines are opposite reciprocals

This means that the slope of the other line is -1/7

The equation of the perpendicular lines is then calculated as

y = m(x - x₁) +y₁

Where

m = -1/7

(x₁, y₁) = (3, -7)

So, we have

y = -1/7(x - 3) - 7

Evaluate

y = -1/7(x - 3) - 7

Add 7 to both sides

y + 7 = -1/7(x - 3)

Hence, the perpendicular line has an equation of y + 7 = -1/7(x - 3)

Read more about linear equations at

brainly.com/question/4074386

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8 0
1 year ago
4. Simplify the expression. (6 points)
Lunna [17]

<span>4. Simplify the expression.
sine of x to the second power minus one divided by cosine of negative x</span>

<span>(1−sin2(x))/(sin(x)−csc(x))<span>

</span>sin2x+cos2x=1</span> <span>1−sin2x=cos2x<span>

</span>cos2(x)/(sin(x)−csc(x))</span> <span>csc(x)=1/sin(x)</span> <span>cos2(x)/(sin(x)− 1/sin(x))= cos2(x)/((sin2(x)− 1)/sin(x))</span> <span>sin2(x)− 1=-cos2(x)</span> <span>cos2(x)/(( -cos2(x))/sin(x))
=-sin(x)</span>
<span>the answer is the letter a) -sin x

</span><span>5. Find all solutions in the interval [0, 2π). (6 points)
sin2x + sin x = 0
</span> using a graphical tool  
the solutions   x1=0 x2=pi <span>x3=3pi/2
the answer is the letter </span><span>D) x = 0, π, three pi divided by two</span>

3 0
3 years ago
Read 2 more answers
6x+2y=8<br> 9x+3y=14<br> Skew <br> Neither<br> Perpendicular<br> Parallel
Dafna11 [192]
Answer: Parallel

I believe that if you set up these equations into y = mx + b form, you're able to notice that the slope is the same for each equation. That causes the answer to be parallel
6 0
1 year ago
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