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3 years ago

9

Is this statement about equivalent expressions true? (2 + 5) + 8 = 2 + (5 + 8)

1 answer:

alexdok [17]3 years ago

6 0

Yes

(2+5)+8=2+(5+8)
7+8=2+13
15=15

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Choose all the values of a that make the following equation true= 3/4 = a/36

exis [7]

Answer:

a = 27

Step-by-step explanation:

3/4 = a/36 Cross multiply

4*a = 36*3 Combine the right

4a = 108 Divide by 4

4a/4 = 108/4

a = 27

5 0

3 years ago

Alfredo tiene 36 cromos más que Iván, y si comprará 10 más , tendría el triple . ¿Cuantos cromos tiene cada uno?

ololo11 [35]

Respuesta:

Alfredo = 59 pegatinas

Ivan = 23 pegatinas

Explicación paso a paso:

Dejar :

Pegatinas de Alfred = a

Pegatinas de Ivan = b

a = b + 36 - - - (1)

a + 10 = 3b- - - (11)

De 1)

a = b + 36

Ponga a = b + 36 en (11)

b + 36 + 10 = 3b

b + 46 = 3b

46 = 3b - b

46 = 2b

b = 23

a = b + 36

a = 23 + 36

a = 59

Alfredo = 59 pegatinas

Ivan = 23 pegatinas

3 0

3 years ago

Is 2(–2) + 6(2) equivalent to (–3)(–3) + (–1)(1)? Let negative numbers be represented with a "–" symbol and positive numbers be

irinina [24]

Answer:

Yes they are equivalent

Step-by-step explanation:

2(-2) = -4, plus 6(2) = 8 and

(-3)(-3) = 9, plus (-1)(1) = 8

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4 years ago

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What are the measures of the two angles in the figure below?

Mumz [18]

Answer: answer is A. 80 degrees and 100 degree

Step-by-step explanation:

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Pls help * ASAP* what is the approximate value of square root of 8 to the nearest tenth?

ad-work [718]

Answer:

2.8

Step-by-step explanation:

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3 years ago

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