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trasher [3.6K]
3 years ago
9

Did I do anything wrong? how would I solve it if I did do something wrong??​

Mathematics
2 answers:
s344n2d4d5 [400]3 years ago
5 0
Thats right!well done
levacccp [35]3 years ago
3 0

Answer:

No its correct x=25

Step-by-step explanation:

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Ralph is 3 times as old as Sara. In 4 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now.
marshall27 [118]
3x-x=(2x+4)-(x+4)? That is my answer but it might not be right
3 0
3 years ago
If a rectangle's length is y−2 and the width is 3y+2 write an expression for the perimeter and an expression for the area.
aalyn [17]

Answer:

Area = 3y^2 - 4y - 4 units square.

Perimeter = 8y units.

Step-by-step explanation:

Area of a rectangle = length * width.

Perimeter of a rectangle = 2*(length + width).

It is given that length = y−2 units and width = 3y+2 units. To find the area and the area of the rectangle in terms of y, simply put the length and the width in the above area and perimeter equations.

Area = length * width = (y-2)*(3y+2).

Expanding the expression gives:

Area = 3y^2 + 2y - 6y - 4 = (3y^2 -4y - 4) units square.

Similarly,

Perimeter = 2*(length + width) = 2*(y-2 + 3y+2) = 2*4y = 8y units.

Therefore, the expression for the area and the perimeter of the given rectangle is (3y^2 - 4y - 4) units square and (8y) units respectively!!!

3 0
3 years ago
Ruby bought 2 chicken wings for $4. What was the cost of the wings in dollars per wing ?
AnnZ [28]

Answer:

$8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!!
Eddi Din [679]

Answer:

- the pressure will decrease

(volume is doubled ,the pressure reduced by half).

Step-by-step explanation:

P_1 V_1=P_2 V_2

This equation shows that, as volume increases, the pressure of the gas decreases in proportion.

Similarly, as volume decreases, the pressure of the gas increases.

6 0
3 years ago
2x — бу = 12<br> х+ 10 = — 9
Serggg [28]

Answer:

x = -19; y = 25/3

Step-by-step explanation:

Step 1: solve the equation with only one variable

Isolate the variable (x)

x + 10 = -9

x = -9 - 10

x = -19

Step 2: input new information into the other equation

If x = -19, then:

2(-19) - 6y = 12

Isolate the variable (y)

-38 - 6y = 12

-6y = 12 + 38

-6y = 50

y = 50 ÷ 6

y = 50/6

Simplify

y = 25/3

5 0
3 years ago
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