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Alekssandra [29.7K]
3 years ago
5

Pls hurry will mark brainliest if you show work pls x + 10 = - x + 28

Mathematics
1 answer:
Brrunno [24]3 years ago
7 0

Step-by-step explanation:

2x = 18

Divide both sides by 2

x = 9

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In an experiment, a petri dish with a colony of bacteria is exposed to cold temperatures and then warmed again.
CaHeK987 [17]
You have to solve 3 equations pretty much simultaneously here using the x and y values in the general form of the quadratic equation y=a x^{2} +bx+c
Start with the first values of x=0 and y=5.1 to solve for c:
5.1=a(0) ^{2} +b(0)+c so c = 5.1
Next use the second x and y values along with the value of c in the next equation:
3.03=a(1) ^{2} +b(1)+5.1 gives you
-2.07 = a + b.  Solve this for a:
a = -2.07 - b
Finally use the third set of numbers with the c value AND the subbed value for a:
1.17=a(3) ^{2} +b(3)+5.1
1.17 = 9(-2.07 - b)+ 3b + 5.1 which simplifies to:
1.17 = -18.63 - 9b + 3b + 5.1 which further simplifies to:
14.7 = -6b and b = -2.45
Now you have c and b, let's find a using one of the simplified equations:
-2.07 = a + b
-2.07 = a - 2.45
a = .38
So here's your equation:
y=.38 x^{2} -2.45x+5.1

4 0
4 years ago
Find the diameter, given the circumference of a circle is 40.035 cm.
LekaFEV [45]

Answer:

12.75

Step-by-step explanation:

c = π x d

40.035= 3.14 x d

40.035/3.14 = 12.75

8 0
3 years ago
Kevin bowled 7 games last weekend. His scores are: 115, 165, 138, 172, 127, 193, 142. What is Kevin's median score?
Nataly [62]

Answer:

172.

Step-by-step explanation:

115, 165, 138, 172, 127, 193, 142

The median is the middle number, which is 172.

Uneven amount? Here’s a trick, 7 + 1 = 8 / 2 = 4, so the fourth number is the median.

3 0
3 years ago
Read 2 more answers
18
mr_godi [17]

The correct answer is D.

Have a good day! :)

8 0
3 years ago
Read 2 more answers
PLLZZZ HELP QUICK <br> Answer both please
saw5 [17]

Answer:

The Median is the middle number in the sequence.

Because there is an even amount of numbers, you will get two Medians (32,33). Add them together and divide by two (65/2 = 32.5).

The Median is 32.5.

The Range is the what you get when you subtract the lowest number from the highest number (65 - 29 = 36).

The Range is 36.

<u><em>Hope this helps </em></u>! :)

5 0
4 years ago
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