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3 years ago

Who ever is right gets points 10 POINTS

Mathematics

2 answers:

Evgesh-ka [11]3 years ago

4 0

Answer: 3 1/3

Step-by-step explanation:

Turned into mixed numbers: -7/3 + 17/3

Multiply all the numbers by 3: -7 * 3 = -21

17 * 3 = 51

3 * 3 = 9

-21 + 51 = 30

30/9

30/9 = 3 1/3

vodomira [7]3 years ago

3 0

Answer:

3 1/3 is your answer.

Step-by-step explanation:

1. Subtract the whole numbers

2. Combine fractions

3. Add the fraction and whole number. ( 3 1/3 )

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Qualitative research differs from quantitative research because it a. relies heavily on statistical analysis b. is conducted in

Shtirlitz [24]

Answer:

Step-by-step explanation:

Qualitative research involves mainly exploratory. It is used to gain understanding reasons,opinions and motivations.

Quantitative research is used to collect and generate numerical data used in defining and solving problems.

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3 years ago

What is the point slope form of a line with slope 3 that contains the point (2,1)

Mice21 [21]

Answer:

y - 1 = 3 ( x - 2)

Step-by-step explanation:

The formula for point slope form is y-y1=m(x-x1)

Just substitute the given information into the equation to get your answer.

(reminder m=slope, y1=the given y value, x1= the given x value)

HOPE THIS HELPS

7 0

3 years ago

Factorise 2x^2 - 3x -2 < 0

Galina-37 [17]

Step 1: Factor $2 x^{2} - 3x -2$
1. Multiply 2 by -2, which is -4.
2. Ask: Which two numbers add up to -3 and multiply to -4?
3. Answer: 1 and -4
4. Rewrite $-3x$ as the sum of $x$ and $-4x$

$2 x^{2} +x-4x-2\ \textless \ 0$

Step 2: Factor out common terms in the first two terms, then in the last two terms.

 $x(2x+1)-2(2x+1)\ \textless \ 0$

Step 3: Factor out the common term $2x+1$

$(2x+1)(x-2)\ \textless \ 0$

Step 4: Solve for $x$

1. Ask: When will $(2x+1)(x-2)$ equal zero?
2. Answer: When $2x + 1 = 0$ or $x-2=0$
3. Solve each of the 2 equations above:

 $x=- \frac{1}{2} ,2$

Step 5: From the values of $x$ above, we have these 3 intervals to test.
x = < -1/2
-1/2 < x < 2
x > 2

Step 6: Pick a test point for each interval

For the interval $x\ \textless \ - \frac{1}{2} 
$
Lets pick $x=-1.$ Then, $2(-1) ^{2} -3 * -1 -2 \ \textless \ 0$
After simplifying, we get $3\ \textless \ 0$ , Which is false.
Drop this interval.

For this interval $- \frac{1}{2} \ \textless \ x\ \textless \ 2$
Lets pick $x=0$ . Then, $2* 0^{2} - 3 * 0-2\ \textless \ 0$ . After simplifying, we get $-2\ \textless \ 0,$ which is true. Keep this interval.

For the interval $x\ \textgreater \ 2$

Lets pick $x = 3.$ Then, $2 * 3 ^{2} -3*3-2\ \textless \ 0.$ After simplifying, we get $7\ \textless \ 0$ , Which is false. Drop this interval.

.Step 7: Therefore,
$- \frac{1}{2} \ \textless \ x\ \textless \ 2$

Done! :)

4 0

3 years ago

Solve the inequality

AnnyKZ [126]

$x+15\geq9\qquad\text{subtract 15 from both sides}\\\\\boxed{x\geq-6}$

7 0

3 years ago

The diameter of circle p below is 39.4 what is the approximate area of circle p???

Rufina [12.5K]

A= π r2
r= 39.4/2=19.7
A= 19.7 x 19.7=388.09
A= pi x 388.09= 1218.6026
A= 1218.6026

3 0

3 years ago