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4 years ago

Which phrase represents the algebraic expression 3p+6/7p-9

Mathematics

1 answer:

omeli [17]4 years ago

7 0

Answer:

The answer is the sum of three times a number and six, divided by the difference of seven times the number and nine

Step-by-step explanation:

3p = three x a number

7p = seven x a number

3p+6 = sum of three x a number plus six

7p-9 = difference of seven x the number minus nine

(3p+6)/(7p-9) = sum of three times x number plus six, divided by the difference of seven x the number - nine

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Juan worked 8 hours for a certain amount of money per hour represent how much Juan earned

kiruha [24]

Step-by-step explanation:

Data:

Amount of money per hour: X $

Amount of hours worked: 8h.

Amount Earned: Y $

In case, you know X (AMOUNT OF MONEY PER HOUR):

One hour (1h) is equivalent to X.

Eight hours (8h) - How much would it be?

Answer:

1. Multiply 8 (numbers of hour worked) per X (amount of money per hour)

Example 1:

If X = 10$

8 hours * 10 $ = 80$

Juan worked 8 hours, and earned 80$

Example 2:

If X = 20$

8 hours * 20$ = 160$

Juan worked 8 hours, and earned 160$.

In case you know Y (TOTAL AMOUNT EARNED)

Eight hours (8h) are equivalent to Y.

One hour - How much would it be?

Answer:

1. Divide Y into total hours worked (8H).

Example 3:

If Y = 200$

200 $ / 8 hours = 25$

Per hour Juan earns 25$

Example 4:

If Y = 400$

400$ / 8 hours = 50$

Per hour Juan earns 50$.

4 0

3 years ago

What is the greatest possible product of a 3 digit number and a 1 digit number?

nydimaria [60]

To figure this out, we must multiply the highest 3 digit number and the highest 1 digit number together.

9 is the highest 1 digit number.
999 is the highest 3 digit number.

999 × 9 = 8991

The greatest possible product is 8,991.

3 0

3 years ago

Read 2 more answers

A polygon has vertices A(3, 3), B(3, 6), and C(9, 3). Find the area of the polygon. NEED IT ASAP

avanturin [10]

<h3>Answer: 9 square units</h3>

Explanation:

The diagram is shown below.

Side AC is the base which is 6 units long (since 9-3 = 6)

Side AB is the height which is 3 units

area = base*height/2 = 6*3/2 = 18/2 = 9

3 0

2 years ago

In a survey of 329 people who attended a local professional soccer team’s most recent home game, 141 said that they were fans of

Verdich [7]

Answer: (0.3751,0.4821)

Step-by-step explanation:

Given : Level of significance : $1-\alpha:0.95$

Then , significance level : $\alpha: 1-0.95=0.05$

Since , sample size : $n=329$ , i.e. a large sample (n<30).

Then we use z-test.

Using excel (by going in formulas for more statistics and then statistics), Critical value : $z_{\alpha/2}=1.96$

Also, the proportion of people said that they were fans of the visiting team :-

$\hat{p}=\dfrac{ 141}{329}\approx 0.4286$

The confidence interval for population proportion is given by :-

$\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$0.4286\pm(1.96)\sqrt{\dfrac{0.4286(1-0.4286)}{329}}\\\\\approx0.4286\pm0.053\\\\=(0.4286-0.0534, 0.4286+0.053=(0.3751,\ 0.4821)$

Hence, a 95% confidence interval for the population proportion of attendees who were fans of the visiting team= (0.3751,0.4821)

4 0

3 years ago

Select the correct answer.

asambeis [7]

Answer:

y=3x+4

Step-by-step explanation:

The equation of the straight line that passes through (-3,-5) with slope 3 can be found using

$y = mx + b$

where m=3 is the slope .

We substitute the slope to get:

$y = 3x + b$

We substitute the point to find b.

$- 5 = 3( - 3) + b \\ - 5 = - 9 + b \\ b = - 5 + 9 = 4$

The equation of the straight line is:

$y = 3x + 4$

3 0

3 years ago