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alexira [117]
2 years ago
5

HELPPPP i need the answer to number 9

Mathematics
2 answers:
PolarNik [594]2 years ago
8 0

Step-by-step explanation:

it just means you use one equation to fully express one variable by the other, and then you use that identity in the second equation solving then for the second variable.

x = y - 2

7y = 4x + 35

the first equation is already an identity existing x by y.

so, we use this now in the second equation :

7y = 4(y - 2) + 35 = 4y - 8 + 35 = 4y +27

3y = 27

y = 9

x = y - 2 = 9 - 2 = 7

o-na [289]2 years ago
7 0

The value of x is 7 and the value of y is 9.

<h3>What is an equation?</h3>

The equation in mathematics is the relationship between the variables and the number and establishes the relationship between the two or more variables.

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Use one equation to fully express one variable by the other, and then you use that identity in the second equation solving then for the second variable.

x = y - 2

7y = 4x + 35

The first equation is already an identity existing x by y. Then, we use this now in the second equation :

7y = 4(y - 2) + 35 = 4y - 8 + 35 = 4y +27

3y = 27

y = 9

The value of x will be calculated as below:-

x = y - 2 = 9 - 2 = 7

Therefore, the value of x is 7 and the value of y is 9.

To know more about equations follow

brainly.com/question/22340165

#SPJ1

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jek_recluse [69]

Answer:

2 cubic yards

Step-by-step explanation:

In this problem we are simply finding the volume of a 3D shape. We can calculate this by L × W × H.

9.5 × 12 × 1/3 = 48 ft³

(Note: 4 inches is 1/3 foot)

This means Rosilaine needs 48 cubic feet of wood chips. However, the wood chips are sold in yards, so we need to convert cubic feet to cubic yards.

48 ÷ 27 = 1.777 (repeating decimal)

This means Rosilaine should buy 2 cubic yards of wood chips.

6 0
3 years ago
The perimeter formula for a rectangle is 2l + 2w, where l is the length and w is the width.
erastovalidia [21]

Answer:

Correct.

Step-by-step explanation:

This is the perimeter formula for a rectangle.

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8 0
3 years ago
Please tell me the answer quick
Vesnalui [34]
To compare these numbers, you must first put them into one format.  Since you have mixed numbers, you may have to find and use the LCD.

-2.5, 1/5, 10, -12/4, 18/5, 10 could be simplified somewhat immediately:

-2.5, 1/5, 10, -3, (3 3/5)   This set of numbers is simple enough so that you could rearrange them in ascending order mentally:

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In this case the number of elements in this set is odd, so all you have to do is to select the MIDDLE element:  1/5.

The median is 1/5.

You MUST learn this procedure (arranging the set elements in ascending order and selecting the middle element) so that you can apply it yourself.

8 0
3 years ago
Round to the nearest thousand -0.867796832​
Dima020 [189]

Answer:-0.868

Step-by-step explanation: Find the number that is in the thousdants place which is the first 7 and look one place to the right for the rounding diget which is the next 7, and if the last 7 is lower that 5 round down and if it is greater than 5 round up.

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8 0
3 years ago
Write 894613 in the chart find the value of the digit 9
Pepsi [2]
The value of nine is 90,000.

Hope that helped:)
5 0
3 years ago
Read 2 more answers
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