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4 years ago

Solve for a. 7a-2b=5a-b

Mathematics

2 answers:

RideAnS [48]4 years ago

7 0

A=1 because the 2b and be cancel out and you combine like terms

prohojiy [21]4 years ago

5 0

Answer: a=-3b

Step-by-step explanation:

get all letters on the same side so:

7a-5a (because when you cross the = you do the opposite)=-b+2b

2a=b

you are solving for a so: 2a/2=b/2

so the 2 cancel out and you have a=1/2b

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PLEASE HElp asap Solve for x. x = [?] X + 19 7x + 9

Bess [88]

X + 19 + 7x + 9 = 180
8x + 28 = 180
8x = 180 - 28
8x = 152
X = 152 : 8
X = 19

3 0

3 years ago

A player in a board game will roll two standard dice. She needs to roll a 9, 10, or 11 to win the game. Determine the sample spa

Delvig [45]

Answer:

$25\%$

Step-by-step explanation:

$Sample\ Space=Possible\ outcomes\\=\{(1,1),(1,2),(1,3),(1,4),(1,5),(1,6),(2,1),(2,2),(2,3),(2,4),(2,5),(2,6)\\(3,1),(3,2),(3,3),(3,4),(3,5),(3,6),(4,1)(4,2),(4,3),(4,4),(4,5),(4,6)\\(5,1),(5,2),(5,3),(5,4),(5,5),(5,6),(6,1),(6,2),(6,3),(6,4),(6,5),(6,6)\}\\\\Total\ possible\ outcomes=36\\\\Favourable\ outcomes=9,10\ or\ 11=\\\{(3,6),(4,5),(4,6),(5,4),(5,5),(5,6),(6,3),(6,4),(6,5)\}\\\\Number\ of\ favourable\ outcomes=9$

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3 years ago

If x = -6, which inequality is true?

Sveta_85 [38]

Answer:

Step-by-step explanation:

-5 - 3(-6) > 10

-5 - -18 > 10

-5 + 18 > 10

13 > 10

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3 years ago

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wlad13 [49]

Answer:

Step-by-step explanation:

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3 years ago

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katovenus [111]

Answer:

$15 per hour

Step-by-step explanation:

what’s the ratio of $30 in 2 hours.

= $30 / 2 hours

= $15 per hour

3 0

3 years ago