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3 years ago

Which equation shows the commutative property of addition?

Mathematics

1 answer:

aalyn [17]3 years ago

6 0

<span>B. -3 + (7+3) = -3 +(3+7) shows commutative property of addition.</span>

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A plumber charges 130 to start job plus 56 per hour . How many hours did she work if the total bill is 214

iragen [17]

Answer:

The plumber worked for 1.5 hours

Step-by-step explanation:

y = 130 + 56x

Substitute 214 for y in the equation

214 = 130 + 56x

-130 -130 Subtract 130 from both sides

84 = 56x Divide both sides by 56

1.5 = x

4 0

3 years ago

Read 2 more answers

Which function has the same domain as y= 2√x?<br> Oy= √2x<br> O y=2³√x<br> 0₁y = √x-2<br> O y=³√x-2

dybincka [34]

The option first is correct because y= 2√x and y= √2x have same domain which is x ≥ 0.

<h3>What is a function?</h3>

It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.

We have a function:

y= 2√x

From the above function the domain should be:

x ≥ 0 (because square root of negative values does not exist)

The function:

y = √(2x)

2x ≥ 0

x ≥ 0

Thus, the option first is correct because y= 2√x and y= √2x have same domain which is x ≥ 0.

Learn more about the function here:

brainly.com/question/5245372

#SPJ1

3 0

2 years ago

SOMEONE PLZ HELP JSJSJSNSJNSNSNSNSNNS I HAVE 30 MINS LEFT PLZ

KatRina [158]

Answer:

the answer is d. x >=4

8 0

3 years ago

The letters in the given list are written on tiles, one letter per tile. A, B, C, F, G, I, K, L, O, P, Q, T, V, W, X, Z The 16 t

Butoxors [25]

Answer:

(a) $\frac{1}{16}$

(b) $\frac{1}{8}$

(d) $\frac{15}{16}$

Step-by-step explanation:

The letters in each tile are:

A, B, C, F, G, I, K, L, O, P, Q, T, V, W, X, Z

Total Number of tiles n(S)=16

(a)The probability of drawing any one of the letters

The Probability of drawing any one of the letters $=\dfrac{1}{n(S)}=\dfrac{1}{16}$

(b)The probability of drawing either an "F" or "P" tile

P(Either an F or a P Tile) = P(drawing an F Tile )+P(drawing a P Tile)

$=\dfrac{1}{16}+\dfrac{1}{16}\\=\dfrac{2}{16}\\=\dfrac{1}{8}$

(c)The probability of drawing a vowel

The Vowel Tiles are: A,I,O

Number of Vowels =3

$\text{P(Drawing a vowel)}=\dfrac{3}{16}$

(d)The probability of not drawing a "Q" tile

$\text{P(Drawing a Q tile)}=\dfrac{1}{16}\\Therefore:\\\text{P(Not Drawing a Q tile)}=P(Q^c)=1-\dfrac{1}{16}\\=\dfrac{15}{16}$

6 0

3 years ago

What is the measure of the inscribed angle that shares endpoints with a central angle measuring 85°

DedPeter [7]

The answer is C! The measure of central angle is 2x the measure an inscribed angle!

5 0

3 years ago