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olchik [2.2K]
3 years ago
11

Kendra is determining the distance between the points (6, 8) and (2, –3). Her work is shown below. Step 1: d = StartRoot (6 minu

s 2) squared + (8 minus 3) squared EndRoot Step 2: d = StartRoot (4) squared + (5) squared EndRoot Step 3: d = StartRoot 16 + 25 EndRoot Step 4: d = StartRoot 41 EndRoot Which best describes the accuracy of Kendra’s solution? Her solution is correct. Her solution is incorrect. She subtracted before squaring. Her solution is incorrect. She made an error when substituting the x-values into the equation. Her solution is incorrect. She made an error when substituting the y-values into the equation.
Mathematics
1 answer:
Georgia [21]3 years ago
3 0

Answer:

Her solution is correct

Step-by-step explanation:

i just took the test

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A coin bank has 250 coins dimes and quarters worth 39.25 how many of each type of coins are there?
Maurinko [17]
Set up a system of equations.

0.10d + 0.25q = 39.25
d + q = 250

Where 'd' represents the number of dimes, and 'q' represents the number of quarters.

d + q = 250

Subtract 'q' to both sides:

d = -q + 250

Plug in '-q + 250' for 'd' in the 1st equation:

0.10(-q + 250) + 0.25q = 39.25

Distribute 0.10:

-0.10q + 25 + 0.25q = 39.25

Combine like terms:

0.15q + 25 = 39.25

Subtract 25 to both sides:

0.15q = 14.25

Divide 0.15 to both sides:

q = 95

Now plug this into any of the two equations to find 'd':

d + q = 250

d + 95 = 250

Subtract 95 to both sides:

d = 155

So there are 95 quarters and 155 dimes.
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3 years ago
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Plzz help please.......​
kap26 [50]

Answer:

6.71

You use pythagoras so you do:

6² + 3² = 45

square root 45 =6.71

6 0
3 years ago
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What is the simplified expression for 3 a squared + 9 a b + 5 minus 4 a squared minus 4 a b + 3?
Gemiola [76]

Answer:

-1ab^2 + 5b + 8

Step-by-step explanation:

3a^2+9ab+5-4a^2-4ab+3

3a^2-4ab^2=-1ab^2

9ab-4ab=5ab

5+3=8

-1ab^2+5ab+8

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1/6divid by 5 and I need help for my sis that is 2
elixir [45]

Answer:

The answer is 5/6

Step-by-step explanation:

1/6 x 5 is 5/6. You can do 1 x 5 which is 5. You don't need to multiply anything else. The answer is 5/6

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Answer:

B

Step-by-step explanation:

He's typing 40 words per minute.

110 words divided by 2.75 minutes.


40 x 4.25 minutes= 170


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