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shutvik [7]
3 years ago
15

Can sombody please help me with this math problem?

Mathematics
1 answer:
Molodets [167]3 years ago
4 0

y=2/3y-3


1. y = 2/3 (9)-3   multiply 9 and 2 =18/3

 y=18/3-3 divide 18 and 3 =6

y=6-3 subt. 3

y=3



2.  -11=2/3x - 3

 -11+3 = 2/3 x   add 3 to both sides to cancel -3

 -8=2/3 x  

(3/2)-8 = (2/3)3/2 x multiply both sides by reciprical of 2/3

-24/2 = x  divide

-12=x

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Dan's car depreciates at a rate of 15% per year. By what percentage has Dan's car depreciated after 3 years?​
Pavlova-9 [17]

The percentage of deprecation of the car in the third year is 38.59%.

<h3>What is deprecation?</h3>

Depreciation is the decline in the value of an asset as a result of wear and tear.

Deprecation in year 1 = 15%

Deprecation in year 2 = 15% x (100 - 15%) = 12.75%

Deprecation in year 3 = 15% x (85% - 12.75) = 10.84%

Sum of deprecation = 38.59%

To learn more about depreciation, please check: brainly.com/question/25552427

5 0
2 years ago
Use function notation to represent how much the volume of the box (in cubic inches) changes by if the cutout length increases fr
MakcuM [25]

Answer:

Increases 64 times

Step-by-step explanation:

The volume of the box can be calculated using formula

V=l\cdot w\cdot h,

where

V = volume,

l = length,

w = width,

h = height

If the length was 0.3 inches, then the volume was

V_1=0.3\cdot w\cdot h=0.3wh

When the length became 1.2 inches, then all dimensions became 1.2 :0.3 =4 times greater, then the volume was

V_2=1.2\cdot (4w)\cdot (4h)=19.2wh

The volume increases

\dfrac{V_2}{V_1}=\dfrac{1.92wh}{0.3wh}=64 times

7 0
3 years ago
Can someone please help me out?
Elza [17]

Answer:

Distribute, subtract, additon,divide

Step-by-step explanation:

4(x-7)=2x-6 to get the second problem you distribute the 4 to the 7 and x

4x-28=2x-6 subtract the 2x from 4x

2x-28=-6   then u add the 28 to the negative 6

2x=22 divide

x=11

4 0
3 years ago
Read 2 more answers
Which would not be a step in solving 5x + 15 + 2x = 24 + 4x?
Klio2033 [76]

Answer:

A. Use the distributive property.

Step-by-step explanation:

We cannot use the distribute property because there are not parentheses to distribute a number through.

5x + 15 + 2x = 24 + 4x

We can collect the terms, and isolate the variable

8 0
3 years ago
diketahui akar akar persamaan kuadrat 2x^2-9x + 7 = 0 adalah x1 dan x2. nilai dari x1^2 + x2^2- 4x1x2 adalah...
Leviafan [203]
<span>jika xy = 0 , kemudian menganggap x dan y = 0

faktor 2x^2-9+7
(2x-2)(x-7)=0

2x-2=0
2x=2
x=1

x-7=0
x=7

</span><span>jika 1 = x1 dan 7 = x2 maka jawabannya adalah 1^2+7^2-4(1)(7)=22
</span>
jika 7 = x1 dan 1 = x2 maka jawabannya adalah
7^2+7^2-4(7)(1)=22

<span>jawabannya adalah 22</span>


6 0
3 years ago
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