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Nady [450]
3 years ago
10

frac r9+8−13= 9r​ +8" alt="-13 =\dfrac r9+8−13= 9r​ +8" align="absmiddle" class="latex-formula">

Mathematics
2 answers:
Murljashka [212]3 years ago
7 0
Don’t know but it I’ll be here with a big boi 2
just olya [345]3 years ago
4 0

Answer:

r = -189

Step-by-step explanation:

multiply both sides by 9 to get rid of the fraction.

-117=r+72

now subtract 72 from both sides.

-117-72=r

r = -189

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I appreciate any help. Trying to get the hang of these.
aliya0001 [1]

Answer:

x = 12

Step-by-step explanation:

Since the top line is equal to the bottom, you make the equation -

x + x + 4 = x + 16

You subtract an x on both sides because there is one on each side -

x + 4 = 16

Then you subtract the 4 from both sides to get x by its self, which makes

x = 12

7 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!
Nookie1986 [14]

This may be one of those questions that could take
more paper to ask than to answer.

Line-1 goes through  (-4, 8) and  (4,6) .

Its slope is (difference in 'y') / (difference in 'x')

Dif in 'y' = (6 - 8) = 2
Dif in 'x' = (4 - -4) = 8
Slope of Line-1 =  2/8  or  1/4

Line-2 goes through  (-1, 1)  and  (3, 5)

Its slope is (difference in 'y') / (difference in 'x')

Dif in 'y' = (5 - 1) = 4
Dif in 'x' = (3 - -1) = 4
Slope of Line-2 = 4/4 = 1

Slope of Line-1 = 1/4
Slope of Line-2 = 4

The slopes of the lines are different.
They can't be parallel, and they can't be the same line.
They must intersect in one point, and only one point.

That means the pair of equations has exactly one (1) solution.
 

5 0
4 years ago
Difine complex fraction . give two example of a complex fraction
marin [14]

If in a fraction, the numerator or the denominator or both are fractions, then it is called a complex fraction.

Example 1:

\frac{\frac{3}{4} }{7}

Here, since the numerator is a fraction, it is a complex fraction.

Example 2:

\frac{\frac{1}{2} }{\frac{3}{7} }

Here, since the numerator and the denominator are fractions, it is a complex fraction.

6 0
4 years ago
Find the radius of the circle whose equation is 3x² + 3y² = 75.
Flauer [41]

Answer:

<h2>A) 5</h2>

Step-by-step explanation:

The equation of a circle:

(x-h)^2+(y-k)^2=r^2

(h, k) - center

r - radius

We have the equation:

3x^2+3y^2=75             <em>divide both sides by 3</em>

x^2+y^2=25\to r^2=25\to r=\sqrt{25}\to r=5

7 0
4 years ago
Find the solution to each problem. Show all of your work.
Katen [24]

1. 1 hour = 60 minutes

We convert 3 hours and 25 minutes to minute : 3 x 60 + 25 = 205 (minutes). Since 205 < 230, it took longer to get home than getting to the beach.

2. (Same convertion)

5 hours and 10 minutes = 5 x 60 + 10 = 310 (minutes)

So, the last day rained longer than the day before it.

3. 1 day = 24 hours.

We convert 3 days to hours : 3 x 24 = 72 (hours)

Since 72 > 68, Wendy's family lost their power longer than their neighbors.

4. 1 minute = 60 seconds

Convert 2 minutes and 2 seconds to seconds : 2 x 60 + 2 = 122 (seconds)

Since 122 > 121, it means Paul took longer to finish his race, which mean Jeff finished first (Rip Paul)

5.

Question : Bob bought 2 pizzas for him and his friend, Kevin. They both ate 1 pizza. Bob finished his pizza in 6 minutes and 45 seconds. Kevin finished his pizza in 400 seconds. Who finished first?

Solution : Convert 6 minutes and 45 seconds to seconds : 6 x 60 + 45 = 405 (seconds)

Since 405 > 400, Bob took longer to finish his pizza -> Kevin finished first.

6 0
2 years ago
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