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Setler79 [48]
3 years ago
5

Fiona and her friends are playing a game by guessing where a coin will land when it is randomly dropped inside the square shown

below. fiona guesses that the coin is likely to land in the blue area. which explains whether or not fiona is correct and why?
Mathematics
2 answers:
azamat3 years ago
3 0

Answer:

Step-by-step explanation:

aev [14]3 years ago
3 0

Answer:

Fiona is not correct because a larger part of the square is white.

Step-by-step explanation:

The blue area is much smaller making it unlikely for the coin to land in that area.

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how for is Blaine's house if you must drive 6.5 hours through the woods at an average of 45mph to get there?
omeli [17]
Six and a half hours at a speed of 45 mph. 45 mph is forty five miles per hour. since there are six full hours, multiply six (time) by speed (45) to get the distance within the six full hours, which is 270 miles. you also have an additional half hour at a 45 mph speed, so rather than going 45 miles in one hour, you for half an hour, meaning you go 22.5 miles. add these two together (270 + 22.5) to get 292.5 miles. a faster way to get to this would be to multiply 6.5 * 45. hole this helps!
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beks73 [17]
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3 0
3 years ago
What is the easiest way to solve a quadratic equation?​
algol [13]

Answer: This is an opinion, look below! :)

Step-by-step explanation:

Factor the expression. To factor the expression, you have to use the factors of the {\displaystyle x^{2}}x^{2} term (3), and the factors of the constant term (-4), to make them multiply and then add up to the middle term, (-11). Here's how you do it:

Since {\displaystyle 3x^{2}}3x^{2} only has one set of possible factors, {\displaystyle 3x}3x and {\displaystyle x}x, you can write those in the parenthesis: {\displaystyle (3x\pm ?)(x\pm ?)=0}(3x\pm ?)(x\pm ?)=0.

Then, use process of elimination to plug in the factors of 4 to find a combination that produces -11x when multiplied. You can either use a combination of 4 and 1, or 2 and 2, since both of those numbers multiply to get 4. Just remember that one of the terms should be negative, since the term is -4.[3]

By trial and error, try out this combination of factors {\displaystyle (3x+1)(x-4)}(3x+1)(x-4). When you multiply them out, you get {\displaystyle 3x^{2}-12x+x-4}3x^{2}-12x+x-4. If you combine the terms {\displaystyle -12x}-12x and {\displaystyle x}x, you get {\displaystyle -11x}-11x, which is the middle term you were aiming for. You have just factored the quadratic equation.

As an example of trial and error, let's try checking a factoring combination for {\displaystyle 3x^{2}-11x-4=0}3x^{2}-11x-4=0 that is an error (does not work): {\displaystyle (3x-2)(x+2)}(3x-2)(x+2) = {\displaystyle 3x^{2}+6x-2x-4}3x^{2}+6x-2x-4. If you combine those terms, you get {\displaystyle 3x^{2}-4x-4}3x^{2}-4x-4. Though the factors -2 and 2 do multiply to make -4, the middle term does not work, because you needed to get {\displaystyle -11x}-11x, not {\displaystyle -4x}-4x.

7 0
2 years ago
PLEASE HELP ASAP
ladessa [460]
1)An equation in the slope-intercept form is written as

y=mx+by=mx+b

Where m is the slope of the line and b is the y-intercept. You can use this equation to write an equation if you know the slope and the y-intercept.

Example

Find the equation of the line

Choose two points that are on the line

Calculate the slope between the two points

<span><span>m=<span>y2−y1x2−x1</span>=<span><span>(−1)−3</span><span>3−(−3)</span></span>=−46=−23</span><span>m=<span>y2−y1x2−x1</span>=<span><span>(−1)−3</span><span>3−(−3)</span></span>=−46=−23</span></span>

We can find the b-value, the y-intercept, by looking at the graph

b = 1

We've got a value for m and a value for b. This gives us the linear function

<span>y=−23x+1y=−23x+1</span>

In many cases the value of b is not as easily read. In those cases, or if you're uncertain whether the line actually crosses the y-axis in this particular point you can calculate b by solving the equation for b and then substituting x and y with one of your two points.

We can use the example above to illustrate this. We've got the two points (-3, 3) and (3, -1). From these two points we calculated the slope

<span>m=−23m=−23</span>

This gives us the equation

<span>y=−23x+by=−23x+b</span>

From this we can solve the equation for b

<span>b=y+23xb=y+23x</span>

And if we put in the values from our first point (-3, 3) we get

<span><span>b=3+23⋅(−3)=3+(−2)=1</span><span>b=3+23⋅(−3)=3+(−2)=1</span></span>

If we put in this value for b in the equation we get

<span>y=−23x+1y=−23x+1</span>

which is the same equation as we got when we read the y-intercept from the graph.

To summarize how to write a linear equation using the slope-interception form you

Identify the slope, m. This can be done by calculating the slope between two known points of the line using the slope formula.Find the y-intercept. This can be done by substituting the slope and the coordinates of a point (x, y) on the line in the slope-intercept formula and then solve for b.

Once you've got both m and b you can just put them in the equation at their respective position.

https://www.mathplanet.com/education/algebra-1/formulating-linear-equations/writing-linear-equations.....


2)https://www.cymath.com/answer?q=6x%20%2B%202y%20%3E%204


3)https://www.cymath.com/answer?q=9x%20%E2%80%93%203y%20%3D%2012

4 0
3 years ago
Read 2 more answers
Parallelogram PQRS is shown on the coordinate grid. Parallelogram PQRS is dilated with the origin as the center of dilation usin
Gwar [14]

Answer:

B) Parallelogram P'Q'R'S' is smaller than parallelogram PQRS, because the scale factor is less than 1.  

Step-by-step explanation:

Given that Parallelogram PQRS is shown on the coordinate grid. Parallelogram PQRS is dilated with the origin as the center of dilation using the rule (x, y) → (0.75x, 0.75y) to create parallelogram P'Q'R'S'.

This means that sides of PQRS would be 0.75 times the sides of the original PQRS

Or PQRS will be larger

B) Parallelogram P'Q'R'S' is smaller than parallelogram PQRS, because the scale factor is less than 1.  

is the right answer

7 0
3 years ago
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