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4 years ago

What is the difference between subtracting and adding fractions?

1 answer:

8 0

In short the difference is the signs of this - and the signs of + in addition to this the signs of subtracting is 2-1=1 and addition is 2+1=3.

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Which of the lines shown is a reasonable trend line for the scatter plot?

Nezavi [6.7K]

Answer:

blue

Step-by-step explanation:

it is going along with the points. we know it cant be red because that line is negative and the dots are going in a positive direction. we know it cant be pink bc it's not even going in the same direction as the points. so it has to be blue

4 0

3 years ago

There is a sales tax of $6 on an item that costs $64 before tax. The sales tax on a second item is $8.25 . How much does the sec

bulgar [2K]

The second item would be $88 before tax since the tax rate is 9.375%

5 0

4 years ago

Assignment due today Q-Q 9 1/2=k/9

nikdorinn [45]

$\huge\mathfrak\blue{answer}$

$= q - \frac{q91}{2} = \frac{k}{9}$

$\blue{switch \: sides}$

$= \frac{k}{9} = q - \frac{q91}{2}$

$\blue{multiply \: 9 \: both \: sides}$

$= \frac{9k}{9} = 9q - 9 \: . \: \frac{q91}{2}$

$\blue{lastly \: simplify}$

$=\underline {k = 9q - \frac{{9q}^{91} }{2} }$

(mark me brainliest if you're satisfied)

3 0

3 years ago

You have 5 55 reindeer, Bloopin, Rudy, Ezekiel, Prancer, and Balthazar, and you want to have 3 33 fly your sleigh. You always ha

sweet-ann [11.9K]

Answer:

60 different ways.

Step-by-step explanation:

We have been given that you have 5 reindeer, Bloopin, Rudy, Ezekiel, Prancer, and Balthazar, and you want to have 3 fly your sleigh. You always have your reindeer fly in a single-file line. We are asked to find the number of ways in which we can arrange reindeer.

We will use permutations to solve our given problem.

The number of way to choose r objects from a set of n objects is $^nP_r=\frac{n!}{(n-r)!}$ .

Upon substituting our given values in permutations formula, we will get:

$^5P_3=\frac{5!}{(5-3)!}$

$^5P_3=\frac{5!}{2!}$

$^5P_3=\frac{5\times 4\times 3\times 2!}{2!}$

$^5P_3=5\times 4\times 3$

$^5P_3=60$

Therefore, you can arrange your reindeer in 60 different ways.

4 0

3 years ago

2 Find an equation in the form y = ax? + bx + c for the parabola passing through the points. (3. – 56). (-1, - 16). (-2,- 51)

ehidna [41]

Answer:

Step-by-step explanation:

Many ways to do this in the details.

All start by writing three equations with three unknowns

-56 = a(3²) + b(3) + c

-56 = 9a + 3b + c 1)

-16 = a(-1²) + b(-1) + c

-16 = a - b + c 2)

-51 = a(-2²) + b(-2) + c

-51 = 4a - 2b + c 3)

subtract equation 2 from equation 1

-40 = 8a + 4b

--10 = 2a + b

b = -10 - 2a 4)

subtract equation 3 from equation 1

-5 = 5a + 5b

-1 = a + b 5)

substitute 4 into 5

-1 = a + (-10 - 2a)

-1 = - a - 10

a = - 9

substitute a into 4

b = -10 - 2(-9)

b = 8

substitute a and b into any of 1, 2, or 3

-51 = 4(-9) - 2(8) + c

-51 = -36 - 16 + c

c = 1

y = -9x² + 8x + 1

We can use a plotting calculator to confirm our result.

7 0

3 years ago