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olasank [31]
3 years ago
9

Is y=3x linear or nonlinear

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
7 0
Linear that is it  ugh i needed to make it 20 characters ok

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A boat traveled 210 miles downstream and back. The trip downstream took 10 hours. The trip back took 70 hours. What is the speed
musickatia [10]

Try this solution:

Answer: 6 & 4.5 (m-per-h)

Step-by-step explanation:

- The basic formula used in this task is S=V*t, where S - distance, V - speed, t - time.

- the downstream speed is: V+Vc, where V - the speed of the boat in still water, Vc - the speed of the current.

- the upstream speed is: V-Vc.

- according to the described above the distance for downstream is S1=(V+Vc)*t1, where t1=10; the distance for upstream is S2=(V-Vc)*t2, where t2=70.

- for whole travel down- and upstream: S=S1+S2.

- Using these it is possible to make up the system of the equations:

\left \{ {{(70(V-V_c)=10(V+V_c)} \atop {70(V-V_c)+10(V+V_c)=210}} \right.

V - the speed of the boat in still water - 6 miles per hour, Vc - the speed of the current - 4.5 miles per hour. All the details for the system of the equations are in the attachment.

4 0
3 years ago
Nicola claims that the product of any fraction and 1616 will always be less than 1616. complete the sentences below about nicola
LUCKY_DIMON [66]
Can't see the answer choices but Nicola is wrong. 16 * (12/8) = 24>16
4 0
3 years ago
Find two numbers that multiply to make the first number and add to make the second number. (I understand how to do it, I’m just
oee [108]
Let
x-----------> <span>the first number 
y-----------> </span><span>the second number

we know that
x*y=x-----------> y=x/x----------> y=1
and x+y=y------> x=y-y---------> x=0

 the answer is
</span> the first number  is 0
 the second  number is 1<span>

</span>
6 0
3 years ago
What is the equation of the line in the slope intercept form?
slega [8]

Answer:

y=x+100

Step-by-step explanation:

3 0
3 years ago
Tony has a jar that contains 16 red, 8 blue, 7 black, and 1 yellow marble. What is the theoretical probability of selecting a bl
suter [353]

Answer:

\frac{1}{4}

Step-by-step explanation:

Number of blue marbles = 8

Total number of marbles = 16+8+7+1=32

probability\: of \:selecting\: a\: blue\; marble\\=\frac{Number\: of\:blue\: marbles}{Total\: number\: of\: marbles} \\\\=\frac{8}{32} \\\\=\frac{1}{4}

6 0
3 years ago
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