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Karo-lina-s [1.5K]
3 years ago
15

Can someone tell me the answers 21-30 please

Mathematics
1 answer:
bazaltina [42]3 years ago
8 0

Answer:8

Step-by-step explanation:

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Directions for constructing a square inscribed in a circle? ​
Ann [662]
STEPS:
1. Using your straightedge, draw a reference line, if one is not provided.
2. Copy the side of the square onto the reference line, starting at a point labeled A'.
3. Construct a perpendicular at point B' to the line through ab2.
4. Place your compass point at B', and copy the side of the square onto the perpendicular b'g. Label the end of the segment copy as point C.
5. With your compass still set at a span representing AB, place the compass point at C and swing an arc to the left.
6. Holding this same span, place the compass point at A' and swing an arc intersecting with the previous arc. Label the point of intersection as D.
7. Connect points A' to D, D to C, and C to B' to form a square.
3 0
3 years ago
Read 2 more answers
Need these 2 answered. 50 points!<br><br> Please Show your work, Thanks! :)
Shtirlitz [24]

Answer:

1) A

2) C

Step-by-step explanation:

Question 1)

We have the function:

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

Notice that this is a quadratic function in the vertex form:

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

Where (h, k) is the vertex point, a is the leading co-efficient, and h is also the axis of symmetry.

Let's identify these characteristics first. Our leading co-efficient a is 2.

And our vertex is (-2, -3). It is <em>not</em> (2, -3) because (x+2) is the same as (x-(-2)).

We want to find the minimum or maximum value of our function, as well as the domain and range.

First, by looking at our leading co-efficient, which is 2, we can see that it's positive. Therefore, our parabola curves upwards.

Therefore, we will have a <em>minimum</em> value. And this minimum value will be our vertex.

Our vertex is (-2, -3). Therefore, our <em>minimum</em> value is at y=-3.

The domain of all quadratics is always all real numbers.

For the range, we refer to our minimum/maximum value.

Our parabola curves upwards and our <em>minimum </em>value is at y=-3.

Therefore, our range is all numbers <em>greater than or equal to </em>-3.

The choice that represents all of these answers is A.

Question 2)

We have:

y=2(x+2)^2-4

Again, this is in vertex form. Let's identify our characteristics.

Our leading co-efficient a is 2, so the graph curves upwards.

And our vertex is at (-2, -4).

The axis of symmetry is the same as the x-coordinate of our vertex. Therefore, our axis of symmetry is at x=-2.

So, this function has a vertex at (-2, -4) and an axis of symmetry at x=-2.

The choice that represents these characteristics is C.

So, our answer is C.

And we're done!

7 0
3 years ago
What effect does nuclear radiation have on atoms?
Brrunno [24]
I believe the answer is
Nuclear radiation ionizes the atom...
sorry if wrong
6 0
3 years ago
Read 2 more answers
Prove a/b is less than b/a when 0 &lt; a &lt;b
enyata [817]

\frac{a}{b} < \frac{b}{a} \implies \\ a^2 < b^2 \implies a-b

We are given that 0<a<b, which means that 0>-a>-b if you multiply it by -1, which means what's given by our inequality is true and we are done.

7 0
3 years ago
Diego works at a warehouse that ships two types of packages, a red package weighing 4 pounds and a blue package weighing 6 pound
Misha Larkins [42]

Answer:

Step-by-step explanation:

Red =x   Blue = y

1)  4x + 6y = 180

2)  x + y = 40

solve for x in eq. 2 and plug into eq. 1

2a)  x=40-y

1a)  4(40-y) + 6y = 180

160-4y +6y = 180

2y=20

y=10

plug into eq. 2

x + 10 =40

x=30

30 red packages

;)  maybe a late Christmas gift.. :D

8 0
2 years ago
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