MATHEMATICS HIGH SCHOOL

Steve can run 1 2/9 miles in 10 minutes. How many miles can he run in 30 minutes?

Answers

Answer 1

Answer:

Answer:

3 2/3

Step-by-step explanation:

remember to give me brainliest cause I helped you

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write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator. 40 to 56

Answers

Answer:

5/7

Step-by-step explanation:

A common factor of 8 can be canceled from numerator and denominator.

40/56 = (5·8)/(7·8) = (5/7)·(8/8) = (5/7)·1 = 5/7

_____

Since you know your multiplication tables, you know that 40 and 56 are both multiples of 8.

If you don't know your multiplication tables, you can find the greatest common divisor (GCD) of the two numbers and divide each by that. The GCD can be found using Euclid's algorithm. For that, you divide the larger by the smaller and use the remainder as the new smaller number. The original smaller number is now the larger number. For these numbers, that looks like ...

56 ÷ 40 = 1 r 16

40 ÷ 16 = 2 r 8

16 ÷ 8 = 2 r 0 . . . . . the zero remainder signals that the divisor (8) is the GCD

Now, your fraction is ...

(40/8) / (56/8) = 5/7

Answer:

5/7

Step-by-step explanation:

40/56 both divided by 8 and that is how to get your answer because you can not simplify further

A piece of wire 7/8 meter long broke into two pieces.one piece was 1/4 meter long. How is the other piece

Answers

Answer:

The second piece is 5/8 meters.

Step-by-step explanation:

To find the length of the second piece of wire, subtract the length of the first piece of wire from the total.

7/8 - 1/4

Get a common denominator:

7/8 - (1/4) *2/2

7/8 - 2/8

5/8

The second piece is 5/8 meters.

The daily revenue from the sale of fried dough at a local street vendor in Boston is known to be normally distributed with a known standard deviation of $120. The revenue on each of the last 25 days is noted, and the average is computed as $550. A 95% confidence interval is constructed for the population mean revenue. If the data from the last 40 days had been used, then the resulting 95% confidence intervals would have been _____________________. Multiple Choice narrower, with a larger probability of reporting an incorrect interval wider, with the same probability of reporting an incorrect interval narrower, with the same probability of reporting an incorrect interval wider, with a larger probability of reporting an incorrect interval Next

Answers

Answer:

Narrower with the same probability of reporting an incorrect interval

Step-by-step explanation:

Increasing the sample size shrinks the width of the confidence interval because the larger the sample size, the more accurate the sample represents the true population.

Standard Error is calculated by multiplying the z or t score of the confidence level by the standard deviation, then dividing by the square root of the sample size

E = z(s)/√n

t scores are used for samples below a size of 30. All t values for 95% confidence are higher than the z score of 1.96, which is used when the sample is greater than 30. This causes a larger value for the error estimate, therefore creating a larger width for the confidence interval.

(a + 2b + 3c) − (4a + 6b − 5c) is equivalent to?
Can you please explain with some details?

Answers

The solution of the given expression will be -3a - 4b + 8c.'

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that the expression is (a + 2b + 3c) − (4a + 6b − 5c). The expression will be solved as below,

E = (a + 2b + 3 c) - (4a + 6b - 5c)

E = a + 2b + 3c - 4a - 6b + 5c =

E = -3a - 4b + 8c

Therefore, the expression will have the solution (a + 2b + 3c) − (4a + 6b − 5c).

To know more about an expression follow

brainly.com/question/73112

#SPJ2

(a + 2b + 3 c) - (4a + 6b - 5c) =

= a + 2b + 3c - 4a - 6b + 5c =

= -3a - 4b + 8c

Use the substitution method to solve the system of equations

3x+2y=13

y=x-1

Answers

Answer:

$x=3\ny=2$

Step-by-step explanation:

$3x+2y=13\ny=x-1$

Solve for $y=x-1$ for y:

$y=x-1$

Substitute $x-1$ for y in $3x+2y=13$ :

$3x+2y=13$

$3x+2(x-1)=13\n$

$5x-2=13$

$5x=13+2$

$5x=15$

$x=15/5$

$x=3$

Substitute 3 for x in $y=x-1$ :

$y=x-1$

$y=(3)-1$

$y=2$

$x=3$ and $y=2$

hope this helps...

The depth, in inches, of an object as it sinks inthe river is found by the equation d =0.5t,
where t is measured in seconds. Which best
describes the constant of proportionality?
A 0.5 second per inch
B 0.5 inch per second
C 2 inches per second
D 1 inch per 0.5 second

Answers

I got A or D hope this works

Answer:

It c.

Step-by-step explanation:

i had the same question on a quiz and all you have to do is divide per sec.

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