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4 years ago

Three equivalent ratios for 8/16

Mathematics

2 answers:

snow_lady [41]4 years ago

5 0

4:8

2:4

1:2

16:32

Good luck!!!

adelina 88 [10]4 years ago

4 0

Answer:

48 : 96
88 : 176
56 : 112
24 : 48
208 : 416
32 : 64
40 : 80

* Hopefully this helps:) Mark me the brainliest:)!!!

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F (x) = -3x + 2x – 5 Whatisf (-1)?

eduard

Answer:

f(-1) = -4

Step-by-step explanation:

f(-1) simply means that what is f(x) when x = -1?

Just plug in -1 for x to find your answer:

f(-1) = -3(-1) + 2(-1) - 5

f(-1) = 3 - 2 - 5

f(-1) = 1 - 5

f(-1) = -4

7 0

3 years ago

How many can 8 go in to 18

Zinaida [17]

Answer:

8 can go into eighteen 2.25 times

3 0

3 years ago

Read 2 more answers

The length of the escalator is 30 feet and the distance between the floors is 12 feet. Find the distance from the base of th

ss7ja [257]

Answer:

Distance from the base of the escalator to the point on the first floor directly below the top of the escalator = 27.5 feet

Step-by-step explanation:

Given:

Length of escalator = 30 feet

Distance between the floors = 12 feet

To find the distance from base of escalator to the point on the first floor directly below the top of the escalator we will create the figure for the situation.

From the figure we see that a triangle ABC is formed.

We see that the Δ ABC is a right triangle.

Applying Pythagorean theorem for right triangle ABC to find the missing side.

$AB^2=BC^2+AC^2$

AB = 30 feet

BC = 12 feet

Plugging in values in the theorem.

$30^2=12^2+AC^2$

Solving for AC.

$900=144+AC^2$

Subtracting both sides by 144.

$900-144=144+AC^2-144$

$756=AC^2$

Taking square root both sides.

$\sqrt{756}=\sqrt{AC^2}$

$27.5=AC$

∴ $AC=27.5$ feet.

∴ Distance from the base of the escalator to the point on the first floor directly below the top of the escalator = 27.5 feet

3 0

3 years ago

5x-6=2x+9 solve and Check the solution

pickupchik [31]

Answer:

x = 5

Step-by-step explanation:

Take your starting equation:

5x - 6 = 2x + 9

Your first step should be to isolate the variable, X, by having it on only one side of the equation. This can be done by subtracting one of the X values (either 5x or 2x) from either side, but I recommend the side with 2x since it's a smaller value and won't result in a negative.

(This is the right side of the equation)

2x + 9

- 2x

= 9

We need to do the same thing on the other side of the equation too, to balance both sides:

(This is the left side of the equation)

5x - 6

- 2x

= 3x - 6

This is our equation now:

3x - 6 = 9

The next step is to isolate X further by removing any constants (regular numbers) from the side with X. Since the constant on that side is -6, we need to add 6 to that side so that it's cancelled out, and do the same on the other side to balance.

(This is the left side of the equation)

3x - 6

+ 6

= 3x

And now for the other side:

(This is the right side of the equation)

+ 6

= 15

This is our current equation:

3x = 15

The final step is to get X completely isolated. X is being multiplied by 3, so we need to divide both sides of the equation by 3 to finally get the value of X.

(This is the left side of the equation)

÷ 3

= x

And now for the other side:

(This is the right side of the equation)

÷ 3

= 5

Our final equation:

x = 5

We can check our answer by taking the final X value, 5, and inserting it into our beginning equation.

This is the beginning equation, as a reminder:

5x - 6 = 2x + 9

Replace all instances of X with its value, 5:

(5 · 5) - 6 = (2 · 5) + 9

After simplifying, the result is:

19 = 19, which means the X value is correct.

4 0

1 year ago

When conducting a survey, it is important to use a random sample:to get a significant result.to avoid bias and to get a represen

AleksAgata [21]

Answer: to avoid bias and to get a representative sample

Step-by-step explanation:

A random sample is useful for:

Avoid bias: if you have a selected sample, all of the selected individuals may have some common factor (same age group, same salary rage, same political ideology) so the sample may be kinda biased, this is something that you may want to avoid.

All the other options can not be ensured by any method, you survey, even with a random sample, may have no significant result, and you can not ensure that the surveyed people will answer truthfully.

8 0

3 years ago