MATHEMATICS HIGH SCHOOL

Algebra help please!A high-speed train travels 480 km from Paris to Grenoble, France, at an average speed of 180 km/h. How long will it take to reach Grenoble?

A. 0.66 h

B. 3.8 h

C. 0.38 h

D. 2.7 h

Answers

Answer 1
Answer: To solve this you would use the equation, d=r*t. So you would take 480=180*t. Or you could use t=480/180. The answer would come out to 2.66 hours, which means the answer would round up to 2.7 hours. The answer would be D.

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What the product of 3 2/3 and 14 2/5

Answers

Hi There! :)

What the product of 3 2/3 and 14 2/5

52 4/5

Samantha buys one vase and x roses. The vase costs $15 and each rose costs $2.What function equation represents the amount of money Samantha spends?

f(x)=15x−2

f(x)=2x−15

f(x)=2x+15

f(x)=15x+2

Answers

I believe the correct answer from the choices listed above is the third option. The equation that would represent the amount of money Samantha spends would be f(x)=2x+15 where 15 represents the value of the vase which is a fix amount and 2x is the value of the roses.

Hope this answers the question. Have a nice day.

Answer:

f(x)=2x+15

Step-by-step explanation:

5x+12=5x+12 if somebody can help me with that please

Answers

Answer:

x

Step-by-step explanation:

5x+12=5x+12

12-12=5x-5x

x

Which of the following ratios are equivalent to 6:8?36/40
9:12
12 to 16
15/20
24:36
16 to 24

Answers

Answer:

9:12

12 to 16

15/20

Hope this helps
i think 9 12 is correct hope it helps

What is the focal length of the parabola whose graph is shown? focus: (-3, 2.6) and directrix: (-0.6)

Answers

The distance from the focus to the directrix is twice the focal length. Using the distance formula, 2.6+(-0.6) = 3.2. Half of this value is the focal length. 3.2/2 = 1.6. Therefore, the focal length of the parabola with a focus of (-3,2.6) and directrix of -0.6 is 1.6.

Final answer:

The focal length of a parabola is the distance from its focus to the directrix. In this case, the focal length is calculated to be 2.4 units.

Explanation:

In Mathematics, particularly in the study of conic sections, the focal length of a parabola is the distance from the focus to the directrix of the parabola. Given the focus as (-3, 2.6) and the directrix as (-0.6), we can calculate the focal length by using the formula for the distance between a point and a line in a plane, which is |x-x1|. |x-x1| is the absolute value of the difference between the x-coordinate of the focus and the equation of the directrix. Here, x1 is -3 (from the focus) and x is -0.6 (from the directrix). So, the focal length of the parabola is |-0.6 - (-3)| = |-0.6 + 3| = 2.4 units.

Learn more about Focal Length here:

brainly.com/question/36769710

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Which of the following must be proven before it can be stated as true?1) definition
2) postulate
3) hypothesis
4) theorem

Answers

You must prove a Theorem before it can be stated as as a true. 
You answer is 4.) Theorem
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