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2 years ago

Find the volume of the rectangular prism.

Mathematics

2 answers:

madreJ [45]2 years ago

7 0

Answer:

Step-by-step explanation:

Volume = length × width × height

= 7 × 4 × 3

= 84 m²

sasho [114]2 years ago

6 0

Answer:

84m³ (A) should be correct

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You need to find the width of the stream. You cannot measure the width directly, so you draw a diagram showing lengths that you

sergejj [24]

I believe it is a) 22.4 feet. I looked at the comparison between the 6 feet and the width of the lake and a) seemed to make the most sense.

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2 years ago

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The graph of a system of equations is shown below . What system of equations represents the graph ?

True [87]

Answer:

Step-by-step explanation:

Plug the values of x into each equation

3 0

2 years ago

Reverse the two digits of my age, divide by three, add 20, and the result is my age. How many years old am I

lapo4ka [179]

Answer:

48 years old.

Step-by-step explanation:

Let the age be xy or 10x + y.

Reverse the two digits of my age, divide by three, add 20, and the result is my age, convert this to equation:

(10y + x)/3 + 20 = 10x + y
(10y + x)/3 = 10x + y - 20
10y + x = 3(10x + y - 20)
10y + x = 30x + 3y - 60
30x - x + 3y - 10y = 60
29x - 7y = 60

We should consider both x and y are between 1 and 9 since both the age and its reverse are 2-digit numbers.

Possible options for x are:

29x ≥ 7*1 + 60 = 67 ⇒ x > 2, at minimum value of y,

and

29x ≤ 7*9 + 60 = 123 ⇒ x < 5, at maximum value of y.

So x can be 3 or 4.

29*3 - 7y = 60
87 - 7y = 60
7y = 27
y = 27/7, discarded as fraction.

29*4 - 7y = 60
116 - 7y = 60
7y = 56
y = 8

So the age is 48.

6 0

1 year ago

the admission fee for a charity event is 7 dollars for children and 10 dollars for adults the event was attended by 700 people a

ollegr [7]

Given:
$7/child
$10/adult
Total people = 700
Total money = $6,400

First, make two equations.
Let a = # of adults & Let c = # of children.
Let p = total people

1. a+c = 700
2. 10a+7c = 6,400

Then, rearrange the equation to solve for a variable.
c = 700-a

Substitute (700-a) for c, or the # of children in the second equation.
10a+(700-a) = 6400
9a+700 = 6400
9a+700-700 = 6400-700
9a = 5700
9a/9 = 5700/9
a = 633 $\frac{1}{3}$ = # of adults attended

700-633 $\frac{1}{3}$ = c = 66 $\frac{2}{3}$ = # of children attended

4 0

2 years ago

Plz help I'll appreciate it

Nutka1998 [239]

The unit rate is 6 I think

5 0

2 years ago