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lianna [129]
3 years ago
15

I need help on this question plz

Mathematics
2 answers:
vagabundo [1.1K]3 years ago
4 0

The last one should be the answer

Alinara [238K]3 years ago
3 0

the 3rd one down, because all of the points is on/near the line. The line is in the middle of the dots.

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Marcie can swim 20 laps in an hour. How many hours will it take her to swim 100 laps
Margarita [4]

Answer:

5 hours

Step-by-step explanation:

We can write a ratio

20 laps           100 laps

-------------- = --------------

1 hour            x hours

Using cross products

20x = 100

Divide by 20

20x/20 = 100/20

x = 5 hours

4 0
3 years ago
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The __________ are tissues where gases from the air and the blood are exchanged.
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air sacs or alveoli the lungs and blood 3 transport

 of respiratory gases

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An eagle is flying at a height of 275 feet and climbing at a rate of 65 feet per second. The equation for the height of the bird
77julia77 [94]
The slope represents the how fast the bird is climbing and the Y intercept represents where the bird started to climb
7 0
3 years ago
What is the value of the expression 6( -5 1/4 ?
Norma-Jean [14]

Answer:

-63/2

Step-by-step explanation:

6( -5  1/4)

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= -63/2

6 0
3 years ago
X=square root of 880-8x
Sunny_sXe [5.5K]
x=\sqrt{880-8x}\\
D:880-8x\geq0 \wedge x\geq0\\
D:8x\leq880 \wedge x\geq0\\
D:x\leq 110 \wedge x\geq0\\
D:x\in\langle0,110\rangle\\
x^2=880-8x\\
x^2+8x-880=0\\
x^2+8x+16-896=0\\
(x+4)^2=896\\
x+4=8\sqrt{14} \vee x+4=-8\sqrt{14}\\
x=-4+8\sqrt{14} \vee x=-4-8\sqrt{14}\\
\\ x=-4-8\sqrt{14}\not \in D \Rightarrow \boxed{x=-4+8\sqrt{14}}
5 0
3 years ago
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