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Fittoniya [83]
2 years ago
7

Im so confused… please help me

Mathematics
2 answers:
jenyasd209 [6]2 years ago
7 0

Answer:

1.715km

Step-by-step explanation:

If it travels 343m/s, and we know there are 1000m in a km therefore it travels 0.343km in one second.

0.343km x 5s= 1.715km in 5 seconds.

rusak2 [61]2 years ago
6 0

Answer:

To find the speed of sound you must use this equation: v= (331.5 +0.6 x T) m/s.

Step-by-step explanation:

You have to convert 68 F to Celsius which is 20 degrees. Then write down the equation and the knowns and unknowns.

So the equation is this

v= (331.5 + 0.6 x 20) m/s

The answer is: 0.3435 km/s times 5 = 1.7175 (5km)

Make sure to show all these steps. I believe it is correct.

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If bd is both the altitude and median of abc then abs is
AVprozaik [17]

Answer:

isosceles

Step-by-step explanation:

4 0
3 years ago
PLS HELP ME ASAP WITH 42!! (MUST SHOW WORK!!) + LOTS OF POINTS!! *best if show picture with work!!*
ddd [48]
I thought this would be simple, as I'm familiar with algebra and not really "The constant of proportionality," but I will do my best.

So this said "Constant of proportionality," is referring to basically the answers for the equation when X equals certain numbers.

Make a table of different answers when you plug in X and you get the 'Constant of proportionality.'

y = 2.5x + 3
y = 2.5(1) + 3
y = 2.5 + 3
y = 5.5

Since we plugged in 1 for X and got 5.5 for Y, our input and output is (1, 5.5)

Replace X for a different value, and you will get a bunch of different numbers that will in essence be your function inputs and outputs.  Make a table of these and you have your answer.

EXAMPLE - 
-= x =-   -= y =-
-= 1 =-   -= 5.5 =-
-= 2 =-   -= 8 =-
-= 3 =-   -= 11.5 =-
-= 4 =-   -= 13 =-


So there you have it.  I hope this helps!  If you have any further questions, don't hesitate to ask.
3 0
3 years ago
Please help! I will mark brainliest! Random answers will be reported.
pantera1 [17]

Answer:D’ (0, -1)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
What is (f + g)(x)?<br> f(x) = -2x^2 <br> g(x) = -2x^2 + 9x
andreyandreev [35.5K]

Answer:

-4x^2+9x

Step-by-step explanation:

Adding boh gives

(f+g)(x)=-2x^2+(-2x^2+9x)

=-2x^2-2x^2+9x

=-4x^2+9x

4 0
3 years ago
What does 4 5/8 - 1 2/5 equal?
mihalych1998 [28]

4 \frac{5}{8}  - 1 \frac{2}{5}  \\  \\  \frac{37}{8}   -  \frac{7}{5}  \\  \\  \frac{185}{40}  -   \frac{56}{40}   =  \frac{185 - 56}{40}  \\  \\  =  \frac{129}{40}  = 3.225 = 3 \frac{9}{40}

I hope I helped you^_^

8 0
2 years ago
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