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mario62 [17]
3 years ago
9

What is the product of 3x(x2 + 4)? o x2 + 3x + 4 3r3+ 4 O 3x + 12x o 3x2 + 12x

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
8 0

Answer:

Step-by-step explanation:

3x(x^2+4)

=3x^2+12x

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Two trains leave Cleveland at the same time. One train travels east and the other travels west. The speed of the westbound train
OlgaM077 [116]

Answer:

The eastbound train travels at 92 mph and the westbound train travels at 96 mph.

Step-by-step explanation:

We know that Velocity = distance / time

If the eastbound train travels at x miles per hour, the westbound train travels at x + 4 mph.

After 3.5 hours, they are 658 miles apart. If we solve for distance the formula given above we have: Distance = velocity x time. We have that the total distance between both trains is 658 miles.

Substituting the values of the problem and solving for x we have

658 = 3.5x+3.5(x+4)\\658=3.5x+3.5x+14\\644=7x\\92=x

Thus, the eastbound train travels at 92 mph and the westbound train travels at 96 mph.

6 0
3 years ago
Please answer this correctly
sp2606 [1]

Answer:

50%

Step-by-step explanation:

There are 3 numbers fitting the rule, 1, 3, and 5. There is a 3/6 chance of picking one of them or 50%.

5 0
3 years ago
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F(x) = x^3 + 3x^2<br><br> What would the graph look like?
lapo4ka [179]

Answer: the answer is in the attachment.

5 0
2 years ago
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-6×-15=4×+35 i need help with this problem​
Burka [1]
Isolate the variable by dividing each side by factors that don't contain the variable.

-6x-15+15=4x+35+15

-6x=4x+50
(Subtract 4 on both sides)

-10x=50
(Divide by 10 on both sides)

x=5
3 0
2 years ago
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Are the expressions x + x + 1 + x + 2 + x + 1 + x and 5x + 4 equivalent? Why or why not?
egoroff_w [7]

Answer:

yes

they are equivalent because lets say the X = 3 then you would have to answer

3 + 3 + 1 + 3 + 2 + 3 + 1 + 3

and that would = 19

and then on the other equation

5 x 3 + 4 = 19

So the both equal the same.

PLZ MARK ME BRAINLIEST

3 0
3 years ago
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