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lubasha [3.4K]
3 years ago
14

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

Mathematics
2 answers:
Delvig [45]3 years ago
6 0

Answer:

a

Step-by-step explanation:

Elis [28]3 years ago
5 0

Answer:

a -2b

Step-by-step explanation:

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

Distribute

2a +4b -a-2b

Combine like terms

2a-a +4b-2b

a -2b

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The water level at the Dead Sea dropped from 390 meters below sea level in 1930 to 423 meters below sea level in 2010. By how mu
Vikki [24]

Answer:

33ft below sea level

Step-by-step explanation:

423-390=33ft

3 0
3 years ago
Find the value of f (6)
Natali5045456 [20]
Answer: 6f

Explanation: Move 6 to the left of F and remove the parentheses
5 0
2 years ago
X^2 -50x+456=0 solve this algebraiclly find x
bagirrra123 [75]

Answer:

x=-406

Step-by-step explanation:

x^2-50x+456=0

x^2-50x=-456

This is because we subtract 456 from each side.

x-50=-456

We then divide the whole equation by <em>x</em> .

x=-406

Adding 50 to both sides gives us <em>x</em> by itself, hope this helps :D

8 0
2 years ago
Read 2 more answers
Please answer correctly! I will mark you as Brainleist!
kiruha [24]

Answer:

V ≈ 1847.26

Step-by-step explanation:

<u>Circular Cone Formulas in terms of radius r and height h:</u>

The volume of a cone:

V = (1/3)πr2h

Slant height of a cone:

s = √(r2 + h2)

Lateral surface area of a cone:

L = πrs = πr√(r2 + h2)

The base surface area of a cone (a circle):

B = πr2

The total surface area of a cone:

A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))

Therefore, the solution V = πr 2h / 3 = π·142·9/  3 ≈ 1847.25648

4 0
3 years ago
How did they get that vertex
Nataly_w [17]

Answer:A vertex (or node) of a graph is one of the objects that are connected together. The connections between the vertices are called edges or links. A graph with 10 vertices (or nodes) and 11 edges (links).

Step-by-step explanation: (The vertex formula is derived from the completing-the-square process, just as is the Quadratic Formula. In each case, memorization is probably simpler than completing the square.) For a given quadratic y = ax2 + bx + c, the vertex (h, k) is found by computing h = –b/2a, and then evaluating y at h to find k.

8 0
3 years ago
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