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3 years ago

What is 5.9 rounded to

Mathematics

2 answers:

poizon [28]3 years ago

8 0

Answer:

Step-by-step explanation:

igomit [66]3 years ago

4 0

It would round to 6, anything higher than 5 will round up anything 4 or lower will be rounded down.

(Assuming it’s rounding to a whole number )

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2x+3y=-6 what is the slope the x intercept and y intercept ?

melamori03 [73]

Answer:

the slope (or rise over run) is 2/3x, and the y intercept is -2

Step-by-step explanation:

In order to find the slope:

subtract 2x from itself, cancelling it out. Do the same to the other side (-6).
it should then look like this: 3y=-2x+-6
next divide 3 from y as well as from -2 and -6.
it should then look like this: y=2/3x+-2

6 0

3 years ago

If the world population in 2010 is 6.7 million and the rate of growth is by 1.19 percent per year, what will the estimated world

Dennis_Churaev [7]

Answer:

I believe the world population should be 6,700,000,000

Ending Population = Beginning Population * (1 + rate)^years

Ending Population = 6,700,000,000 * (1.19)^40

Ending Population = 7,046,172,293,951

or rounded about 7,046,000,000

(About 7.046 billion)

Step-by-step explanation:

8 0

3 years ago

According to the manufacturer of a backup UPS device, the normal output voltage is 120 volts. The sample of 40 measured voltage

anyanavicka [17]

Answer:

z = 1.83<1.96

null hypothesis is accepted

The sample is came from a population mean

Step-by-step explanation:

Step :-1

The sample of 40 measured voltage amounts from a unit have a mean of 123.59 volts and a standard deviation of 0.31 volts

given sample size n =40

mean of the sample ×⁻ = 123.59 volts

standard deviation of sample σ = 0.31 volts

Step2:-

Null hypothesis :-

the sample is from a population with a mean equal to 120 volts.

H₀ : μ =120

Alternative hypothesis:-

H₁ : μ ≠120

level of significance:- α =0.05

Step 3:-

The test statistic

$z = \frac{x_{-}-mean }{\frac{S.D}{\sqrt{n} } }$

substitute values and simplification

$z = \frac{123.59-120}{\frac{0.31}{\sqrt{40} } }$

on simplification we get the calculated value

z = 1.83

The tabulated value z =1.96 at 0.05 % level of significance

Conclusion:-

Calculated Z < The tabulated value z =1.96 at 0.05 % level of significance

so the null hypothesis is accepted

The sample is came from a population mean

4 0

3 years ago

Sadie is 3 years older than Kareem, and Kareem is twice as old as Nadra. The sum of their ages is 33.

Dima020 [189]

Answer:

Step 1-Write an equation, letting x represent Kareem’s age:

(x + 3) + x + 2 x = 33

Step 2-Solve the equation:

(x + 3) + x + 2 x = 33. 3 + 4 x = 33. 4 x = 30. x = 7 1/2.

Step 3-Sadie is 10 1/2, Kareem is 7 1/2, and Nadra is 3 3/4.

Which corrects the student’s first error?

1. In Step 1, the student should have used One-half x to represent Nadra’s age, and written the equation (x + 3) + x +1/2x = 33.

2. In Step 2, the student should have added 3 on both sides of the equation to find a solution of x = 9.

3. In Step 3, the solution represents Sadie’s age. Therefore, Sadie is 7 1/2, Kareem is 4 1/2, and Nadra is 2 1/4.

4. In Step 3, Nadra’s age is the difference between 33 and Sadie’s and Kareem’s ages, so Nadra is 15.

5 0

2 years ago

List two ways the force of gravity can be increased.

ANEK [815]

Answer: mass and the distance apart are the factors that affect the force of gravity

Step-by-step explanation:

To increase the force of gravity on an object, you must increase the mass of the object and decrease the distance between objects.

5 0

3 years ago