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labwork [276]
3 years ago
15

Mark cycles from home to school at a speed of 16 kilometers per hour. He cycles back on the

Mathematics
1 answer:
katrin [286]3 years ago
7 0

Answer:

Write a time equation, time = dist/speed

:

go time + return time = total time

d%2F16 + d%2F15 = 7.75 hrs

multiply equation by the least common multiple 240, cncel the denominators:

 

15d + 16d = 240(7.75)

31d = 1860

d = 1860/31

d = 60 km one way

total dist = 120 km

:

Check this, find the actual time each way

60/16 = 3.75 hrs

60/15 = 4 hrs

-----------------

total time 7.75 hrs

Step-by-step explanation:

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Help please!!!!!!!!!!!!!!!!
labwork [276]

Answer:

D. (8,3)

Step-by-step explanation:

Factor the equation

x2-11x+24=0

To factor an equation, you want the answer to add up to the second number, so in this case, 8+3 is equal to 11, and 8 times 3 also equals 24

5 0
4 years ago
Read 2 more answers
2 to the power of 46<br> is how many times as many as 2 to the power of 42,
Katarina [22]

Answer: 16

Step-by-step explanation:

4 0
3 years ago
Which of the following is equivalent to the expression x^1/3*x^1/2 ?
gregori [183]

{x}^{\frac{1}{3} }  \times  {x}^{ \frac{1}{2} }  \\  =  {x}^{ \frac{2}{6} }  \times  {x}^{ \frac{3}{6} }  \\  =  {x}^{ \frac{5}{6}}

Hope this helps. - M
8 0
3 years ago
Simplify Show your work.<br><br>513 +-3918​
Orlov [11]

Answer:

-3405

Step-by-step explanation:

So first you subtract 513 from 3918.

This way, you are doing basically an additive inverse.

So you so that and you get the answer. Because you are adding a negative, you are taking away from the positive and going into the negative, which would give you -3,405.

Hope this helped you a little!!^_^

7 0
3 years ago
What equation is graphed in this figure?
ziro4ka [17]
The graph intersect the y axis in (0,1)
⇒ if x=0 ⇒ y=1

y+2= - 3/2(x-2)
if x=0 ⇒ y+2= - 3/2*(-2)=3 ⇒ y=1



when y=0 ⇒x<1
2= - 3/2(x-2)
2= -3/2x+3
2-3=-3/2x
x=-1:(-3/2)=2/3 <1
⇒ The answer is y+2= - 3/2(x-2)

4 0
3 years ago
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