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3 years ago

16a + 7c^2 + 5 - 7a+c

Mathematics

1 answer:

umka21 [38]3 years ago

3 0

Answer:

9a + 7c² + 5 + c

Step-by-step explanation:

$16a + {7}^{2} + 5 - 7a + c$

$16a - 7a = (16 - 7)a = 9a$

$\boxed{\green{= 9a + {7c}^{2} + 5 + c}}$

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Which of these strategies would eliminate a variable in system of equations?

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Step-by-step explanation: the strat would eliminate a variable in this system

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3 years ago

What does tan^2(x) mean

Sever21 [200]

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Step-by-step explanation:

When the exponent is attached to the trig function like that, its essentially the same thing as taking the entire function to that power.

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2 years ago

Share £180 in the 4:5

marissa [1.9K]

4 + 5 = 9
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3 years ago

Consider two people being randomly selected. (For simplicity, ignore leap years.)

inna [77]

Answer:

$(a) = \frac{144}{133225} \\\\(b) = \frac{1}{365}$

Step-by-step explanation:

Part (a) the probability that two people have a birthday on the 9th of any month.

Neglecting leap year, there are 365 days in a year.

There are 12 possible 9th in months that make a year calendar.

If two people have birthday on 9th; P(1st person) and P(2nd person).

$=\frac{12}{365} X\frac{12}{365} = \frac{144}{133225}$

Part (b) the probability that two people have a birthday on the same day of the same month

P(2 people selected have birthday on the same day of same month) + P(2 people selected not having birthday on same day of same month) = 1

P(2 people selected not having birthday on same day of same month):

$= \frac{365}{365} X \frac{364}{365} =\frac{364}{365}$

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7 0

3 years ago

Add the following rational number7/-27 and 11/18

poizon [28]

Answer:

19/54

Step-by-step explanation:

- 7/27 + 11/18

LCM of the 27, 18 is 54

- 7/27 * (2/2) + 11/18 * (3/3)

- 14/54 + 33/54

33 - 14/54

19/54

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2 years ago