2 years ago

Been stuck on this for a while plzz help

Mathematics

2 answers:

timurjin [86]2 years ago

7 0

The answer might be x=3

ExtremeBDS [4]2 years ago

4 0

Answer:

Answer is 18!

Step-by-step explanation:

hope this helps

You might be interested in

Find f(t – 3) for f(x) = 4x2 – 8x + 4.

GarryVolchara [31]

Answer:

4t^2 - 32t + 64.

Step-by-step explanation:

f(x) = 4x2 – 8x + 4

f(t - 3) = 4(t - 3)^2 - 8(t - 3) + 4

= 4(t^2 - 6t + 9) - 8t + 24 + 4

= 4t^2 - 24t + 36 - 8t + 28

= 4t^2 - 32t + 64.

5 0

3 years ago

If 2^(x+3) - 2x = k(2^x) what is the value of k

svlad2 [7]

Answer:

$\large\boxed{C)\ 7}$

Step-by-step explanation:

Use:

$a^n\cdot a^m=a^{n+m}$

$2^{x+3}-2^x=2^x\cdot2^3-2^x=8\cdot2^x-2^x=(8-1)\cdot2^x=7\cdot2^x\\\\2^{x+3}-2^x=k(2^x)\\\\7\cdot2^x=k(2^x)\Rightarrow k=7$

$8\cdot2^x-2^x=8\cdot2^x-1\cdot2^x=(8-1)(2^x)=7\cdot2^x\\\\\text{distributive property:}\ a(b-c)=ab-ac$

8 0

3 years ago

A tree was 5 feet tall. One year later, the tree was 13 feet tall. Write an equation and use mental math to find how many feet f

swat32

Just minus 5 feet from the new height which is 13ft, and the equation will be 13-5, and therefore the tree grew 8 feet

7 0

3 years ago

Read 2 more answers

7+2x /3 = 5 <br> Thx.......................

mote1985 [20]

Answer:

x= -3

Step-by-step explanation:

7+ $\frac{2x}{3}$ = 5

21+2x=15

2x=-6

x= -3

4 0

3 years ago

Read 2 more answers

Jeremy didn't pay his previous month's credit card bill in full. This month's bill shows a finance charge of $85.50. Jeremy calc

Nostrana [21]

Answer:

The monthly percentage rate would be 1.6%

Step-by-step explanation:

Given,

Finance charge = $ 85.50,

Amount of bill in this month = $ 5,343.75,

Hence, the monthly rate of percentage

$=\frac{\text{Finance charge}}{\text{Amount of bill}}\times 100$

$=\frac{85.5}{5343.75}\times 100$

$=\frac{8550}{5343.75}$

$=\frac{855000}{534375}$

= 1.6 %

i.e. OPTION A would be correct.

6 0

3 years ago