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elena-s [515]
3 years ago
8

Is a+b+a+b and 2(a+ b) equivalent?

Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
5 0
This is true, because of the distributive property.  You can expand 2(a + b) to be a + b + a + b
kondor19780726 [428]3 years ago
4 0
Yes bc if you combine like terms u have 2 "a"s and one b so that would be the same as saying 2a and b so your answer is:
Yes.
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6 0
3 years ago
A bad punter on a football team kicks a football approximately straight upward with an initial velocity of 89 ft/sec.
Andrej [43]

Answer:

See below

Step-by-step explanation:

Vertical velocity will be affected by gravity in this scenario

df = do + vo t + 1/2 a t^2         do = original height = 4 ft      a = -32.2 ft/s^2

<u>df = 4 + 89 t  - 1/2 (32.2) t^2        df = height</u>

<u />

On the way up and the way down, the ball may reach height of 102.2125 ft :

102.2125 = 4 + 89 t - 1/2 (32.2) t2   re-arrange to:

-16.1 t^2 + 89t - 98.2125 =0  

      Use Quadratic Formula to find <u>t =   1.5 and 4.0 s </u>

6 0
1 year ago
Is there enough information to prove each quadrilateral is a parallelogram? Explain.
omeli [17]

Answer:

1. yes

2, no

3. yes

4. yes

Step-by-step explanation:

1. yes

If both sets of opposite sides are congruent, the quadrilateral is a parallelogram.

2. no

We know two side lengths. We know nothing about the other 2 sides and also nothing about all 4 angles.

3. yes

The missing angle must be 102°. With both pairs of opposite angles congruent, it must be a parallelogram.

4. yes

With both pairs of opposite angles congruent, it must be a parallelogram.

7 0
2 years ago
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