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3 years ago

Hanna is driving 480 miles. She has already driven 312 miles. What percent of her trip has she completed?

Mathematics

1 answer:

SVEN [57.7K]3 years ago

5 0

Answer:

68%

Step-by-step explanation:

Hope this helps! :)

I would appreciate brainliest, if not that's ok!

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Evaluate 3 - (-1) + (-1) - 3.

lara [203]

Answer:

Step-by-step explanation:

3 - (-1) + (-1) -3 =

Minus and a negative makes it positive. In other words it would be written like this: 3 + 1 + (-1) - 3 =

Next step would be making it minus 1, because plus sign and negative makes the number to be subtracted. It would be rewritten like this: 3 + 1 - 1 - 3 =

Then you will simply add 3 and 1, which makes it 4. So it would be rewritten likes this: 4 - 1 - 3 =

Then you will simply subtract 1 from 4, which would equal to 3. So it would be rewritten like this: 3 - 3 =

Last step, would be subtracting 3 from 3. Whatever is subtracted from itself would always be 0.

So the answer would be 0!

8 0

3 years ago

Read 2 more answers

Find the x-intercept and the y-intercept of the following equation: 4x - 6 y = 12

Dafna1 [17]

The answer is:
X int- 4
Y int- -12

Explanation:
You must subtract 12 from both sides
4x-6y-12=0

Add -6y to both sides

4x-12=y

Plus into y=mx+b

Y=4x-12

Hope this was helpful

6 0

3 years ago

The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent

Leona [35]

Answer: 709

Step-by-step explanation:

The formulas we use to find the required sample size :-

1. $n=(\dfrac{z^*\cdot \sigma}{E})^2$

, where $\sigma$ = population standard deviation,

E = Margin of error .

z* = Critical value

2. $n=p(1-p)(\dfrac{z^*}{E})^2$ , where p= prior estimate of population proportion.

3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes

$n=0.25(\dfrac{z^*}{E})^2$

Given : Margin of error : E= 3% =0.03

Critical value for 95% confidence interval = z*= 1.96

A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.

i.e. p=0.21

Then by formula 2., the required sample size will be :

$n=0.21(1-0.21)(\dfrac{1.96}{0.03})^2$

$n=0.21(0.79)(65.3333)^2$

$n=(0.1659)(4268.44008889)\\\\ n=708.134933333\approx709$ [Round to the next integer.]

Hence, the required sample size of junior executives should be studied = 709

4 0

4 years ago

Which equation describes the line through the points (4, -3) and (5, 0)?

AlladinOne [14]

Answer:

The correct answer would be C

Step-by-step explanation:

If you were to input the X and Y values of the two coordinates into equation C, you will see that the equation would be true for both coordinates, meaning that (4, -3) and (5, 0) are both points that are on the line Y + 3 = 3(X - 4).

3 0

3 years ago

A man deposited $80,000.00 in a bank at 12% compound interest per annum. How much did the man have in the bank at the second yea

vfiekz [6]

The amount that the man have in his bank at the second year is $100,352.

Using this formula

A=P(1+R÷100)^n

Where:

A=Amount

P=Principal=$80,000

R=Rate=12%

n=Number of years=2 years

Let plug in the formula

A=$80,000(1+12÷100)^2

A=$80,000(1+0.12)^2

A=$80,000(1.12)^2

A=$80,000(1.2544)

A=$100,352

Inconclusion the amount that the man have in his bank at the second year is $100,352.

Learn more here:

brainly.com/question/25213872

3 0

3 years ago