3 years ago

If you know 20 divided by 5 = 4 how does that help you caculate 200 dived by 5

Mathematics

1 answer:

scoray [572]3 years ago

8 0

40 just add one zero to 4 because u added one zero to 20

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Pleaseeee help!!!!!!!! I will mark you as brainlinest for correct answer!!!!!!!!!!

user100 [1]

Let x be the cost of gum 20 years ago.
3x - 3 = 75
3x = 78
X = 78/3
X = 26.
So the write answer is A) 3x - 3 = 75.

3 0

3 years ago

If Included in the table, which ordered pair (-4,1) or (1,-4), would result in a relation that is no longer a function. Explain

Kruka [31]

Answer:

(-4,1)

Step-by-step explanation:

Ordered pair (-4,1) means that x = -4 and f(x) = 1

Ordered pair (1,-4) means that x = 1 and f(x) = -4

From the table, we can see that the function is already defined for x = -4, but it is not defined for x = 1. So, the point (1,-4) can be included into the function, but the point (-4,1) cannot.

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3 years ago

In order to qualify for finals in racing event,a race car must achieve an average speed of 250km/hr on a track with a total leng

Kazeer [188]

Answer:

The minimum average speed needed in the second half is 270 km/hr

Step-by-step explanation

We can divide the track in two parts. For the first half of the track the average speed the car achieved was 230 km/hr and we need to make sure that the average speed of the full track is 250 km/hr. Then, we can calculate the average speed of the two parts of the track and force this to be equal to 250 km/hr. In equation, defining $v_2$ as the average speed of the second half:

$\frac{230 + v_2}{2}=250$

Solving for $x$

$x=250*2-230\\x=500-230\\x=270$

Therefore, achieving a speed of 270 km/hr in the second half would be enough to achieve an average speed of 250 on the track.

6 0

3 years ago

Harry reads that a particular element has an atom with a mass of 0.000000000012 grams. What is the weight of the atom expressed

Arlecino [84]

1.2 e⁻¹¹

Because you need a number between 1 and 10 for scientific notation. So you move the decimal over 11 places. Since you move it to the right, it becomes a negative exponent.

8 0

3 years ago

What are the questions

kenny6666 [7]

The answers are, from 7 to 14,

11/3

50/6

49/6

18/8

11/2

7/4

26/5

14/6

3 0

3 years ago