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2 years ago

15

Brian and Andie were calculating their total money saved to see if they could buy a game to share. Andie notices that she has 24

more dollars than Brian. If together they have $72, how much money does Brian and Andie have?

1 answer:

Naddik [55]2 years ago

3 0

Answer:

Andie has 48 and Brian has 24

hope it's correct

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24 is what percent of 800?? A little help for my sister ???????

patriot [66]

24 is 3% of 800.
100%/x%=800/24
(100/x)*x=(800/24)*x
100=33.3x
x=3

5 0

2 years ago

A student takes a part-time job to earn for summer travel. The number of hours, , the student has to work is inversely proportio

Andrej [43]

Answer:

(a) $h = \frac{2400}{w}$

(b)300 Hours

(c)150 Hours

(d)Reduced and halved.

(e) $w = \frac{2400}{h}$

Step-by-step explanation:

(a) The number of hours worked is inversely proportional to the wage.

This is written as:

$h \propto \frac{1}{w} \\\text{Introducing variation constant k}\\h = \frac{k}{w}\\$Since the money to be raised is constant, k = $ \$2400\\Therefore, h = \frac{2400}{w}$

(b)If the student earns $8 an hour

w=$8

$\text{Number of Hours required, h} = \frac{2400}{8} =300 Hours$

(c)When the wage per hour =$16

When w=$16

$\text{Number of Hours required, h} = \frac{2400}{16} =150 Hours$

The number of hours reduced and is in fact halved.

(d)

$\text{When the wage per hour =w}, h = \frac{2400}{w}\\\text{When the wage per hour =2w}, h = \frac{2400}{2w}=\frac{1}{2} X \frac{2400}{w} =\frac{h}{2}$

The effect of raising the wage from $w to $2w per hour is that the number of hours required to work is reduced and exactly halved.

(e)The wage per hour is inversely proportional to the number of hours.

In fact,

$\text{From h = }\frac{2400}{w}\\\text{Cross Multiplying}\\hw=2400\\\text{Dividing both sides by h}\\w = \frac{2400}{h}$

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3 years ago

20) PLS HELP WITH QUESTION ASAP

Dafna11 [192]

Answer:

C. a n =3000(1.05)n-1

Step-by-step explanation:

Arithmetic sequence formula, it is 1.05 because it increases by 1/20th each time. It is n-1 because n-1 is the correct form of arithmetic sequence formulas, without the n-1 it wouldn't work.

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3 years ago

What is the value of x?<br> 2y + 4<br> 10 + 2x<br> 10+18

EastWind [94]

Answer:

if its all one equation x = -y - 22

Step-by-step explanation:

2y + 4 + 10+ 2x + 10 + 18

2x + 2y + 44

2x = -2y - 44

x = -y - 22

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3 years ago

Each leg of a 45-45-90 triangle has a length of 6 units. What is the length of its hypotenuse?

andreyandreev [35.5K]

Use the Pythagorean theorem:
$(\hbox{one leg})^2+(\hbox{the other leg})^2=(\hbox{hypotenuse})^2 \\
6^2+6^2=x^2 \\
6^2 \times 2=x^2 \\
\sqrt{6^2 \times 2}=x \\ \sqrt{6^2} \times \sqrt{2}=x \\ 6\sqrt{2}=x
$

The length of the hypotenuse is 6√2 units.

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3 years ago