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3 years ago

Which algebraic represent 15 less than x divided by 9

Mathematics

2 answers:

polet [3.4K]3 years ago

6 0

X/9 - 15
X divided ( / ) by 9 minus ( - ) 9

svet-max [94.6K]3 years ago

4 0

$15 < x \div 9$

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What does 1/5 + (-1/2) equal

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Answer: (:

Step-by-step explanation:

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If y = 7x − 5, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs?

LenaWriter [7]

Given equation is y =7x - 5.

Let's plug in the values of x's to get their corresponding values of y's.

Let's plug in x = -5. So,

y = 7( -5) - 5 = -35 - 5 = -40

So, the first order pair is (-5, -40)

Hence, the first choice is not correct.

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Second order pair is (2, 9). So, second choice is also not correct.

Now for x = 0, y = 7(0) - 5 = - 5.

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For x = -3, y = 7(-3) - 5 = - 21 - 5 = -26.

Hence the correct choice is {(0, −5), (2, 9), (−3, −26)}.

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3 years ago

If 45 cookies will serve 15 students, how many cookies are needed for 27 students?

Kitty [74]

Answer:

Step-by-step explanation:

45/15

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As an estimation we are told 5 miles is 8 km. <br> Convert 92 km to miles.

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Step-by-step explanation:

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At a factory that produces pistons for cars, Machine 1 produced 174 satisfactory pistons and 116 unsatisfactory pistons today. M

m_a_m_a [10]

Answer:

$0.7$ is the probability that the piston chosen from Machine 1 is satisfactory and the piston chosen from Machine 2 is unsatisfactory

Step-by-step explanation:

The two events are independent of each other.

Hence the probability of choosing satisfactory piston from Machine 1 and unsatisfactory piston from Machine 2 is equal probability of choosing satisfactory piston from Machine 1 + probability of choosing unsatisfactory piston from Machine 2

Substituting the given values we get

Probability of choosing satisfactory piston from Machine 1 and unsatisfactory piston from Machine 2 = $\frac{174}{174 +116} + \frac{20}{180 +20}$

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= $= \frac{174}{290} + \frac{20}{200}\\= 0.6 + 0.1\\= 0.7$

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3 years ago