3 years ago

Which statements about the system are true? Check all that apply.Y = x – 4 3y – x = –7

Mathematics

1 answer:

nirvana33 [79]3 years ago

6 0

The solutions are x = 2.5, y = -1.5, but what are the statements?

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the ratio of isabella money to shane money is 3:11 if isabella has 33$ how much money do shane and isabella have together use di

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Together both shane and isabella have 42$

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4 years ago

Which expression is equivalent to 2 (×+7)-18×+4/5

Ksivusya [100]

Answer:

14.8-16x

Step-by-step explanation:

2x+14-18x+0.8

14.8-16x

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4 years ago

One card is randomly selected from a deck of cards find the odds against drawing a seven

Stella [2.4K]

Answer:

$\frac{3}{4}$

Step-by-step explanation:

Probability of getting a 7 + Probability of not getting a 7 = 1.

Odds against drawing a 7 = Probability of not getting a 7.

We could calculate the probability of getting a 7 and subtract 1 from it to get the answer.

There a four sevens in a deck of card, one of each kind.

Probability of getting a 7 = $P(7) = \frac{4}{52} = \frac{1}{13}$

$\implies P(not \hspace{1mm} getting \hspace{1mm} a \hspace{1mm} 7) = 1 - P(7)$

$\implies$ P(not getting a 7) $= 1 - \frac{1}{13} = \frac{12}{13}$

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3 years ago

What is 1/4 of 3200?

Greeley [361]

Answer: 800

Divide 3200 by 4 to get 800.

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3 years ago

Read 2 more answers

the scientists collection that as granite that weighs 74 26/36 lbs, marble that weighs 63 16/34 lbs, and quartz that weighs 81 9

ipn [44]

Answer:

Step-by-step explanation:

Given the weight of granite to be 74 26/36 lbs,

Weight of quartz is 81 9/40 lbs.

To know how much more quartz weight than the granite, we will take the difference between the weight of quartz and granite as shown.

Weight of quartz - Weight of granite

= 81 9/40 - 74 26/36

= 3,249/40 - 2690/36

= (29, 241 - 26,900)/360

= 2,341/360

= 6 181/360

≈ 6 1/2 lbs

quartz weighs approximately 6 1/2 lbs much more than granite

7 0

3 years ago