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3 years ago

Order the following expressions by their values from least to greatest. b-a a -0.5 a

Mathematics

1 answer:

lesya692 [45]3 years ago

3 1

Answer:

a -0.5

b -a

i believe that is the order but i could be wrong

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Sam is a waiter at a local restaurant where he earns wages of $7 per hour.

DochEvi [55]

Answer:

$7h+5n=E$

$42+5n=E$

Step-by-step explanation:

First write an equation : note key words like "per", "each" and "total".

7 per hour

5 each

6 hours

n= number of people

E= total earnings

total earnings

So:

$7h+5n=E$

$7 per hour plus $5 tips per person equals total earnings

$7(6)+5n=E\\42+5n=E\\$

3 0

3 years ago

A 97% confidence interval for the mean of a population is to be constructed and must be accurate to within 0.3 unit. A prelimina

ivann1987 [24]

Answer:

The sample size will be " $102.5494 \sim 102$ ". A further explanation is given below.

Step-by-step explanation:

Let the sample size will be:

= n

The given values are:

Standard deviation,

= 1.4

ME,

= 0.3

As we know,

⇒ $n=(Z \frac{a}{2}\times \frac{SD}{E})^2$

On putting the estimated values, we get

⇒ $=(2.17\times \frac{1.4}{0 .3})^2$

⇒ $=(\frac{3.038}{0.3})^2$

⇒ $=102.5494 \sim 102$

4 0

3 years ago

-7 (-1-m)????????????????????

juin [17]

-7(-1-m)
First: You would distribute your -7 to your -1 and your -m
Note: A positive and a positive makes a negative.
You would get: 7m+7 as your answer
HOPE THIS HELPS! ^_^

8 0

3 years ago

How do u put a fraction to make a decimal

katen-ka-za [31]

If you want to turn a fraction to a decimal, you have to divide the numerator by the denominator in order to get a decimal number. If the fraction is a mixed number, you would do the same but make sure that the whole number is in front of the decimal.

3 0

3 years ago

Read 2 more answers

The table can be used to determine the solution of equations, 2x - 2y = 6 and 4x + 4y = 28.

NeTakaya

Answer:

(5, 2)

Step-by-step explanation:

Given the following system of equations;

2x - 2y = 6 ......equation 1.

4x + 4y = 28 ......equation 2.

To get an equivalent equation, we would multiply eqn 1 by 2;

2 * (2x - 2y = 6) = 4x - 4y = 12

The new equivalent system of equations are;

4x - 4y = 12

4x + 4y = 28

Adding the equivalent system of equations, we have;

(4x + 4x) + (-4y + 4y) = (12 + 28)

8x + 0 = 40

8x = 40

x = 40/8

x = 5

Next, we would find the value of y;

2x - 2y = 6

Substituting the value of x, we have;

2(5) - 2y = 6

10 - 2y = 6

Rearranging the equation (collecting like terms), we have;

2y = 10 - 6

2y = 4

y = 4/2

y = 2

Therefore, the solutions to the new system of equations are 5 and 2.

Check:

2x - 2y = 6

Substituting the values, we have;

2(5) - 2(2) = 6

10 - 4 = 6

6 = 6

3 0

3 years ago