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Nimfa-mama [501]
2 years ago
7

A carpenter is building a rectangular door. What kind of angles should she use for the corners?

Mathematics
1 answer:
ollegr [7]2 years ago
7 0

Answer:

They should be right angles

Step-by-step explanation:

Since it is a rectangular door, it would need right angles

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The perimeter it a square field is 224. How long is
geniusboy [140]
Since each side of a sqare is equal and there are four sides to the square
224 = 4x
X being the side length.
Then you would simiply divide by 4 to isolate x
x = 56
A side length is 56
8 0
3 years ago
If f(x)=7x-3, what is the value of x when f(x)=1
frosja888 [35]
Set up your equation:
1 = 7x - 3

Add 3 to both sides:
7x = 4

Divide both sides by 7:
x = 4/7

Hope this helps!
3 0
2 years ago
What is the average rate of change from x = −3 to x = −4?
Vika [28.1K]

Answer:

-2

Step-by-step explanation:

Since it would be immensely helpful to know the equation of this parabola, we need to figure it out before we can continue.  We have the work form of a positive upwards-opening parabola as

y=a(x-h)^2+k

where a is the leading coefficient that determines the steepness of lack thereof of the parabola, x and y are coordinates of a point on the graph, and h and k are the coordinates of the vertex.  We know the vertex: V(-3, -3), and it looks like the graph goes through the point P(-2, -1).  Now we will fill in the work form equation and solve for a:

-1=a(-2-(-3))^2-3

which simplifies a bit to

-1=a(1)^2-3

and

-1 = a(1) - 3.  Therefore, a = 2 and our parabola is

y=2(x+3)^2-3

Now that know the equation, we can find the value of y when x = -3 (which is already given in the vertex) and the value of y when x = -4.  Do this by subbing in the values of x one at a time to find y.  When x = -3, y = -3 so the coordinate of that point (aka the vertex) is (-3, -3).  When x = -4, y = -1 so the coordinate of that point is (-4, -1).  The average rate of change between those 2 points is also the slope of the line between those 2 points, so we will use the slope formula to find it:

m=\frac{-1-(-3)}{-4-(-3)} =\frac{2}{-1}=-2

And there you have it!  I'm very surprised that this question sat unanswered for so very long!  I'm sorry I didn't see it earlier!

5 0
3 years ago
Jill will go to the swimming pool on 20 different days this month.
Nezavi [6.7K]

Answer:

15 dollars because it ends up being 45 dollars for daily passes

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
I need help to a can get an A
xeze [42]

Answer:

See below:

Step-by-step explanation:

We can use the Pythagorean Theorum to find out the missing side because we have a 90 degree right angle and 2 sides already given to us.

The Pythagorean Theorem states that a^2 + b^2 = c^2

<em>a </em>in this case would be the shortest side,

<em>b </em>in this case would be the 2nd longest side,

<em>c </em>is the hypotenuse.

a^{2} + b^{2}= c^{2}   \\a^{2} + 15^{2} = 17^{2}

If we solve this, we get 8!

Cheers!

7 0
2 years ago
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