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wariber [46]
3 years ago
11

Which expression is equivalent to 2 (a + 2 b) minus a minus 2 b?

Mathematics
2 answers:
algol [13]3 years ago
8 0

Answer:

a+2b

Step-by-step explanation:

2(a+2b) -a-2b

2a+4b-a-2b

a+2b

ANTONII [103]3 years ago
5 0

Answer:

d

Step-by-step explanation:

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Rewrite as a product of two factors: 3 + 18d + 21y​
Vlada [557]

Answer:

the Expression is :

(3) × (1 + 6d + 7y)

Step-by-step explanation:

here's the solution : -

=》

3 + 18d + 21y

=》

(3 \times 1 )+ (3 \times 6d) + (3 \times 7y)

now, since 3 is common in all terms let's take it out.

=》

3 \times (1 + 6d + 7y)

=》so, ,we got the above expression as product of 3 and ( 1 + 6d + 7y ) as factors.

3 0
3 years ago
Read 2 more answers
Well, I have to write 20 words, so... I think this is enough.
Varvara68 [4.7K]
<h3>Answer: Choice D</h3><h3>m = n</h3><h3>b = sqrt(pi)*a</h3>

=====================================================

Explanation:

Each circle has a radius of 'a'. So r = a.

The area of each circle is pi*r^2 = pi*a^2

The area of each square with side length b is b^2

The two stacks have the same volume only when the circle area is equal to the square area, so whenever pi*a^2 = b^2 is true.

Solving for b leads to b = sqrt(pi*a^2) = sqrt(pi)*a

The stacks must also be the same height for the volumes to be the same, so m = n as well.

6 0
3 years ago
Write an expression to describe the sequence below. Use n to represent the position of a
MrRa [10]

Answer:

n+1=x-1

Step-by-step explanation:

as n goes up, x decreases by 1 each time

7 0
3 years ago
I need help please and thank u,
Alchen [17]

The illegal values of b are when the denominator equals 0.

So, b^2-2b-8=0 gives you (b-4)(b+2)=0

Therefore, b=4 and b=-2, which is answer A.


8 0
3 years ago
Brian rides his bicycle 24 miles in 2 hours. Write a ratio of Brain's miles per hour. Use the ratio from #1 to determine how far
Sati [7]

Answer:Ratio in miles per hour is 12 miles per hour.

Distance travelled is 60miles

Step-by-step explanation:

Speed=distance/time taken

24/2=12miles per hour

Therefore, distance travelled in 5 hours is 12*5=60miles

6 0
3 years ago
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