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kolbaska11 [484]
3 years ago
7

Need help with 2 and 3 please

Mathematics
1 answer:
Lena [83]3 years ago
6 0

Answer:

2) d= 2 sqrt 13

3) d= sqrt 10

Step-by-step explanation:

Question 2.

(3,0) and (9,4)

d = sqrt [(4-0)^2 + (9-3)^2]

d = sqrt (16 + 36)

d = sqrt 52

d = 2 sqrt 13

Question 3.

(0,-7) and (- 1,-4)

d = sqrt [(-1-0)^2 + (-4- -7)^2]

d = sqrt [ (-1)^2 + (3)^2]

d = sqrt (1+9)

d = sqrt 10

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Pls help this is hard
ZanzabumX [31]

Answer:

(6,20) because both lines pass through this point

Step-by-step explanation:

To solve this you can use the substitution method.

Since both of them are equal to y, substitute one of the equations for y, that way you have x+14 = 3x+2. From here you continue to simplify.

Eliminate x from either side of the equation. For example, subtract x from the side that says "x+14". (Make sure you are also subtracting it from the other side of the equal sign as well.

Once you do this you should now have 14 = 2x+2

In order continue, you now have to get x by itself. So now subtract 2 from both sides of the equation. After doing this, you should have 12 = 2x

You then simplify x by dividing both sides by 2. This will get you x = 6

Now that you have the x-value, substitute that into either of the two equations (it is recommended you substitute it into both equations to make sure you have the correct x-value). For example: If I substitute x into Line C's equation, I will now have y = 6 + 14.

6 + 14 is 20, therefore you're y-value is y = 20

7 0
3 years ago
What is the common differences or common ratio in the sequence
siniylev [52]

Answer:

Use the formula for Arithmetic only if it is Arithmetic: a1+ (n-1)d

a represents the first number in the sequence, n represents the number, and d represent common difference

Use the formula for geometric sequence: an=a1r the exponent of r to n-1

an represents the nth term you are trying to find, a1 represents the first number, r represents the common ratio, and n-1 is just the nth term minus 1.

Once you figure out if the sequence is arithmetic or geometric you one of those formulas.

8 0
3 years ago
What would be the maximum value for f(x) = −5x2 + 9
Maru [420]
Well, looking at the expression, it has a -5 on the leading term, that means is not just a quadratic, but is a parabolic graph and because the coefficient of the leading term is negative, is upside-down, or opening downwards.

because it opens downwards, it looks like an arc, comes from the bottom up up up gets to a "maximum" or U-turn (vertex), then goes back down down down.  So, where's the vertex anyway?

\bf \textit{ vertex of a vertical parabola, using coefficients}\\\\
\begin{array}{lccclll}
f(x) = &{{ -5}}x^2&{{ +0}}x&{{ +9}}\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)
\\\\\\
\left( -\cfrac{0}{2(-5)}~~,~~9-\cfrac{0}{4(-5)} \right)\implies (0~~,~~9)

so, that's where the vertex is, and the maximum value for f(x), is the y-coordinate of course, or 9.
3 0
3 years ago
The LCD for the fractions 1/3, 3/4, 5/32, and 8/9 is
liraira [26]

we know that

The LCD is the LCM (least common multiple) of all the denominators.

we have

1/3, 3/4, 5/32, 8/9

3=3^{1} \\ 4=2^{2} \\ 32=2^{5} \\ 9=3^{2}

LCM=2^{5} *3^{2} \\ LCM=32*9\\ LCM=288

So

The LCM of 3, 4, 32, 9 is 288 ,

which is the multiple of the highest power of prime factors from all of the given numbers

therefore

the answer is

288

8 0
3 years ago
Read 2 more answers
Math hw please help! ill give brainliest
Roman55 [17]

Answer:

Just wanted the points

Step-by-step explanation:

THANKS

7 0
3 years ago
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