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4 years ago

I need help, i don't understand it. thank you in advance.

Mathematics

1 answer:

Nadya [2.5K]4 years ago

6 0

Think of it as a riddle.

You need to eliminate and match one city to one transport to one person in the end.

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Take a look at my diagram!*

Use each clue to eliminate the rows and columns until you have narrowed it down.

Below is my work. It would be too hard to explain every step of the way; it will work differently for everyone. Maybe look up the game "Telepathy". The concept is similar!

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I first read the instructions, eliminating and boxing the possible and impossible options.

If I ever got down to one empty spot in a column or row, I'd make sure to circle that and frequently write it down.

If you're doing this right, you will always be progressing. Don't doubt yourself; don't overthink it. It's the game of narrowing down and elimination. If you find yourself stuck, write what you know down. Use logic. Make sure you always look for rows that you forgot to cross out, or empty spots that you missed. Reread the instructions! You will get there!

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*The "eliminated" part is a bit confusing, they weren't entirely eliminated. It's just my thought process! I didn't continue to use it. Just remember to group the right things together!

Don't be scared of looking up the cities and if you don't know, their states!

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Conclusion:

John arrived by plane to Saint Louis meet up with his nephew.

John arrived by bus to Denver to visit his brother.

John came by train to Miami to visit his uncle.

John rode a cycle to Boston to meet up with his cousin.

John drove in a car to San Fransisco to visit his parents.

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Please let me know if you have any questions, or if this helped!

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What are the factors of the polynomial a^2 + a - 2? Select all that apply.

forsale [732]

Answer:

Step-by-step explanation:

$a^2+a-2=a^2+2a-a-2=a(a+2)-1(a+2)=(a+2)(a-1)$

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3 years ago

Please help for Q4 I’m super lost. Write an expression for the sum of four consecutive odd numbers where 2n+1 is the smallest od

sveta [45]

Answer:

n+2

Step-by-step explanation:

This is a Typical Question on Arithmetic Progression with initial term as 2n+1

The next number in this particular series will be 2n+1+2 which is 2n+3 and so on. Thus a common difference of 2 exists.

The nth term of an Arithmetic Progression AP, bn is represented below where b1 is the first term

bn=b1 +(n-1)d where d is the common difference

For this particular series, the 4th term b4 is

b4= 2n+1+(4-1)2 0r b4 =2n+1+6=2n+7

sum of series is represented by equation: n(b1 +b4)/2 where b1 and b4 are 1st and 4th term respectively

Thus Sum required =4(2n+1+2n+7)/2=4(4n+8)/2=8n+16 0r n+2

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4 years ago

If 5x-8w=9, then solve for x, in terms of w and z

babymother [125]

Answer:

Step-by-step explanation:

5x-8w=9 add 8w : 5x-8w+8w = 9+8w

5x = 9+8w

now divid by 5 : x = (9+8w)/5

7 0

3 years ago

Read 2 more answers

Explica con tus palabras el significado de lim f(x)=7

Liono4ka [1.6K]

Domain:
(
−
∞
,
∞
)
,
{
x
|
x
∈
R
}
(
-
∞
,
∞
)
,
{
x
|
x
∈
ℝ
}
Range:
{
y
|
y
=
7
}

6 0

3 years ago

Solve the polynomial equation

ExtremeBDS [4]

Hey there!

You can solve this by squaring both sides to first cancel out the square root on the left. Then, you can eliminate each term as your normally would.

$2 \sqrt{x} =x-3$

$(2 \sqrt{x})^{2} = (x-3)^{2}$

$(4x) = (x-3)(x-3)$

$4x = x^{2} -6x+9$

$x^{2} -10x+9$

Now, you're given the opportunity to find your solution using the quadratic formula. That formula is:

$\frac{-b_-^+ \sqrt{b^2-4ac} }{2a}$

You can find out a, b, and c by comparing your new equation to the standard form. Luckily, we just put our equation into standard form:

$ax^{2} + bx + c$

$x^{2} -10x+9$

$a = 1 \\ b = -10 \\ c = 9$

To find your solution, plug these numbers into the quadratic formula and solve.

$\frac{-b_-^+ \sqrt{b^2-4ac} }{2a}$

$\frac{10_-^+ \sqrt{-10^2-4(9)}}{2}$

Remember to use PEMDAS when solving these problems.

$\frac{10_-^+ \sqrt{100-36}}{2}$

$\frac{10_-^+ \sqrt{64}}{2}$

$\frac{10_-^+ 8}{2}$

Now, solve this final bit by adding the top terms then subtracting them for two different answers.

$\frac{10 + 8}{2} = 9$

$\frac{10- 8}{2} = 1$

Don't assume that both of these are correct. The very last step is to plug both of these into the original problem you were given and see if they make the equation true.

$2 \sqrt{9} =9-3$
$2*3=6$
$6=6$

$2 \sqrt{1} =1-3$
$2*1=-2$
$2 \neq -2$

So (finally), your answer will be x = 9.

Hope this helped you out! :-)

7 0

4 years ago