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Klio2033 [76]
3 years ago
15

-8(2x+4)+8(4+7x)=8x+3x​

Mathematics
1 answer:
prisoha [69]3 years ago
3 0

Answer:

x=0

Step-by-step explanation:

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Find one terminating and one repeating decimal between -1/2 and -1/3
Romashka-Z-Leto [24]
-0.4742 and -0.488888888

Correct me if I am wrong.
7 0
3 years ago
Listed below are pulse rates​ (beats per​ minute) from samples of adult males and females. Find the mean and median for each of
gulaghasi [49]

Answer:

Male: Median: 64.5 and the mean is 70.6

Female: median: 83 and mean is: 79.93

Step-by-step explanation:

For median, you place all of the numbers from lowest to highest, and then find the number in the middle.

For Mean, add up all the numbers, then divide by the amount of numbers there.

For example.

30/5= 6

3 0
3 years ago
Becca and Kimberly are running at a constant speed in a marathon. Becca runs at 4.5 miles per hour. Kimberly’s progress is shown
Georgia [21]

Answer:

Part A: Kimberly

Part B:

Becca = 22.5 miles, Kimberly = 25 miles

Step-by-step explanation:

Part A:

Given that Becca runs at a constant speed of 4.5 miles per hour, use the table to find the constant speed that Kimberly runs, and compare who runs faster.

Let x = time

y = distance

k = speed = y/x

Equation for each person can be written as: y = kx

Therefore:

✔️Equation for Becca if k = 4.5

y = 4.5x

✔️Find k (speed) of Kimberly using (2, 10):

Speed (k) = y/x

k = 10/2

k = 5 miles per hour

Equation for Kimberly would be:

y = 5x

Comparing their speed, Kimberly runs faster because she covers more miles per hour than Becca does.

Part B:

For Becca, substitute x = 5 into Becca's equation, y = 4.5x

Thus:

y = 4.5*5 = 22.5 miles

For Kimberly, substitute x = 5 into Kimberly's equation, y = 5x

Thus:

y = 5*5 = 25 miles

5 0
3 years ago
-
zhannawk [14.2K]

Answer:

D (4,10)

Step-by-step explanation:

the answer is d

4 0
3 years ago
I need help please. Thank you.
AfilCa [17]
The answers are C and B.
Answer A has infinite solutions, and D has no solutions
8 0
3 years ago
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