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Nata [24]
4 years ago
14

Solve the equation. 2(x + 4) = x + 13 A. −3 B. −1 C. 5 D. 7

Mathematics
2 answers:
Nutka1998 [239]4 years ago
7 0
2x + 8 = x + 13
x = 5
Citrus2011 [14]4 years ago
4 0
The answer is C) x = 5

Here are the steps I did.

1. Expand ( 2x + 8 = x + 13)

2. Subtract 8 from both sides ( 2x = x + 13 - 8)

3. Simplify x + 13 - 8 to x + 5 ( 2x = x + 5)

4. Subtract x from both sides ( 2x - x = 5)

5. Simplify 2x - x to x ( x = 5)
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Write the expression as a single term.<br> 3ln(x+2) - ln(x - 1)
Dafna1 [17]

Answer:

ln  [(x + 2)^3 ]/(x-1)

Step-by-step explanation:

3ln(x+2) - ln(x - 1) =  ln (x + 2)^3  -  ln (x-1)

ln (x + 2)^3  -  ln (x-1) =  ln  [(x + 2)^3 ]/(x-1)

7 0
3 years ago
A drama class has a total of 26 students. The number of females is 16 less than the number of males. How many males and how many
nlexa [21]

The class is made up of male and female students.

"A drama class has a total of 26 students"

f + m = 26

"The number of females is 16 less than the number of males"

f = m - 16

Substitute the second equation into the first.

m - 16 + m = 26

- combine like terms -

2m - 16 = 26

- add 16 to both sides -

2m = 42

- divide by 2 -

m = 21

Now substitute that answer into either equation

f + 21 = 26

- subtract both sides by 21 -

f = 5

Remember that whatever you do to one side, you have to do to the other

7 0
3 years ago
Read 2 more answers
2z+3x-8yx=<br> 3zy+x-8=<br><br> find the solution
kirill [66]

Answer:

-8xy+3x+2z

x+3yz-8

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
The prom committee is buying Brownies and Cookies. Brownies cost $2 each and Cookies cost $1.50. They need 45 treats and have $8
eimsori [14]

Answer:

Number of brownies = 30

Number of cookies = 15

Step-by-step explanation:

Given:

Cost of each brownie = $2

Cost of each cookie = $1.5

Total number of treats = 45

Total amount = $82.50

Find:

Number of cookies and brownie

Computation:

Assume;

Number of brownies = b

Number of cookies = c

So,

b + c = 45........eq1

2b + 1.5c = 82.50...........eq2

Eq1 x 2

2b + 2c = 90 ..................eq3

Eq 3 - Eq 1

0.5c = 7.5

c = 7.5 / 0.5

Number of cookies = 15

Number of brownies = 45 - Number of cookies

Number of brownies = 45 - 15

Number of brownies = 30

3 0
3 years ago
Do question 40 please i need help show your work please i need help so bad
zimovet [89]
So 15% is out of 100%, and the cab company has sent 30 cabs out of x?(x is the total number of cabs). \frac{15}{100} =  \frac{30}{x}

So, by setting up that data we already know, we can make this equation to figure out how many cabs total the company actually has:

<span>15x = 100 * 30
</span>
We do the multiplication on the right side

15x = 3000

And divide to isolate the "X" variable

x = 200

So, the cab company has 200 cabs total, and they sent out 30 of them.
3 0
4 years ago
Read 2 more answers
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