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Tom [10]
4 years ago
10

I don't understand how to do this, can someone please help me?

Mathematics
1 answer:
denis23 [38]4 years ago
4 0

Answer:

x=1

Step-by-step explanation:

First find a common denominator between 7 and 4 which is 28, Multiply both equations by 28 eliminating the denominators so now you have theses two equations: 4(2x + 12) = 7(3x + 5) distribute these equations to get:

8x + 48 = 21x +35 now you want to get the x's on one side so 8-21 = -13 which as an equation so far would be -13x + 48 = 35 now do 35-48 = -13 so you can have 13x alone on one side. Your final equation now before you solve is

-13x = -13 the divide -13 by -13 to get 1.

Hope this helps you understand it better

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Which are perfect cubes? Check all that apply. 64 x16 8x3 27x4 81x6 125x9
victus00 [196]

just did the assignment--

A- 64

C- 8x3

F- 125x9

9 0
3 years ago
• Malik Montez's savings account has a principal of $1,640. It earns 6 percent interest a
jekas [21]

Answer:

The amount at the end of second quarter is $1842.704

Step-by-step explanation:

Given as :

The principal in saving account = $1640

The rate of interest = 6 % compounded quarterly

The time period = 6 months

Now,<u> from compounded method</u>

The amount at the end of first quarter = A_1 = principal + 6 % of principal

I.e  A_1 = $1640 + 6 % × $1640

Or, A_1 = $1640 + $ 98.4

∴ A_1 = $1738.4

Again ,

The amount at the end of second quarter = A_2 = A_ + 6 % of  A_1

I.e  A_2 = $1738.4 + 6 % × $1738.4

Or, A_2 = $1738.4 + $104.304

∴ A_2 = $1842.704

So, The amount at the end of second quarter =  A_2 = $1842.704

Hence , The amount at the end of second quarter is $1842.704 Answer

8 0
3 years ago
If the five digit number aa448 is divisible by 9, what digit does a represent?
kaheart [24]

Answer:

a represent 1

and number is 11448.

Step-by-step explanation:

We know that a number is divisible by 9 if the sum of its digit is divisible by 9.

Given number aa448

sum of 4+4+8 = 16

number divisible by 9, 18 , 27,36

as we see sum of 448 is 16 , hence sum of a+a+4+4+8 should be  number divisible by 9 and greater than 16 which is 18, 27,36

Let see of if sum of digits of aa448 is divisible by  18

a+a+4+4+8 = 18

2a + 16 = 18

2a = 18-16 = 2

a =2/2 = 1

Thus, number will be 11448

________________________________________

Let see of if sum of digits of aa448 is divisible by  27

a+a+4+4+8 = 27

2a  = 27 - 16

2a = 11 = 2

a =11/2 = 5.5

as digit cannot be fraction of decimal, it can take value from 1 to 9 hence

sum of digits of aa448 is not divisible by  27

______________________________________________

Let see of if sum of digits of aa448 is divisible by  36

a+a+4+4+8 = 36

2a + 16 = 36

2a = 36-16 = 20

a =20/2 = 10

as digit can take value from 1 to 9 hence sum of digits of aa448 cannot  be divisible by  36 or any higher number than 36 which is divisible by 9.

Thus , a represent 1

and number is 11448.

5 0
4 years ago
PLEASE HELP!<br> Solve |3x|-3=3-6x
Sidana [21]

Answer:

The answer is 00000000    |3x|-3=3-6x=0

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Simplify 7 to the power of 6 ⋅ 7 to the power of 5.
faust18 [17]
7^6 = 117649
7^5 = 16807

so now you multiply
3 0
3 years ago
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