All categories

4 years ago

2(a -3) + 4b - 2(a -b -3) + 5 A. 6b+5 B. 8b-2 C. 6b-5 D. No simplified answer

Mathematics

2 answers:

Bond [772]4 years ago

8 0

Your answer is A. 6b+5

Grace [21]4 years ago

3 0

Let's simplify step-by-step.
2(a−3)+4b−2(a−b−3)+5
Distribute:
=(2)(a)+(2)(−3)+4b+(−2)(a)+(−2)(−b)+(−2)(−3)+5
=2a+−6+4b+−2a+2b+6+5
Combine Like Terms:
=2a+−6+4b+−2a+2b+6+5
=(2a+−2a)+(4b+2b)+(−6+6+5)
=6b+5
Answer : =6b+5

You might be interested in

Select the correct answer.

Darina [25.2K]

Answer: C Please mark brainlist if correct

Step-by-step explanation: 100% Correct Hope This Helps

5 0

3 years ago

Read 2 more answers

Identify the initial value in each formula below, and state whether the formula models exponential growth or

kaheart [24]

Answer:

Intial Value: f(t) = 2 , Exponential Growth

Step-by-step explanation:

To find the initial value, all we have to do is find the value of f(t) at t = 0

In this case the given equation becomes

$f(t) = 2(\frac{5}{3})^0$

from the law of indices we know that any number with the power 0 is equal to 1 (except 0 with the power 0)

$a^0 = 1$

hence the above equation becomes

$f(t) = 2(1)\\ f(t) = 2$

so the initial value is 2.

To find out whether this is exponential growth or exponential decay we need to see whether the base value of the power t is less than 1 or greater than 1, i.e. from

$(\frac{5}{3} )^t$

$\frac{5}{3}$ > 1 or $\frac{5}{3}$ < 1

if the value is greater, then with each increment in power, the total value will increase while if it is less than 1 then with each increment in power the total value will decrease.

Hence since $\frac{5}{3}$ > 1 then this is an exponential growth

3 0

3 years ago

PLEASE HELP!!! I don't get this question at all!!

Luda [366]

88 degrees is the answer. You would start by setting up the equation as (5x+7)+(8x+8)+(3x+5)=180 because all angles of a triangle have a sum of 180 degrees. From there you combine like terms which would leave the answer of being 16x+20=180 then you subtract the 20 from 180 to get x by itself. Then that would leave you with 16x=160 then you divide both sides by 16 to get x=10. From there you plug 16 into the x in the planetarium equation which is 8(10)+8 which equals 88 degrees

8 0

3 years ago

Sales tax on a $400 stereo is $16. What is the tax on a $650 tv?

lana66690 [7]

Answer:

$2.6

Step-by-step explanation:

firstly we find percentage of tax .

(16/400) * 100

= 16/4

= 4 %

now ,

so 4% of 650

= (4*650)/ 100

=260/100

= $2.6

6 0

3 years ago

Please answer this correctly i'll give u 50 points and brainliest

Ivanshal [37]

Answer:

Step-by-step explanation:

Since lines 1 and 2 are parallel, <2=<6 because corresponding angles of parallel lines are congruent. <8 is the vertical angle of <6 meaning it's equal to <6. <8=115 degrees. <7 is the supplement of <6 and therefore 180-<6=<7. 180-115=65.

7 0

3 years ago