2 years ago

I need help for number 2 what is the answer

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

3 0

D is the answer because of Pemdas

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Roberta has collected a set of data and calculated the mean to be 34. The set contains 75 numbers, but Roberta gets an email tel

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30.8 add it all up and divided how ever many number there are

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2 years ago

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Please help me with how to solve this equation by completing the square. The answer should be (2, -6)

OLga [1]

Answer:

(2, -6)

Step-by-step explanation:

5n^2+20n-60

(5n+30)(n-2)

5n + 30 = 0

5n = -30

(5n = -30)/5

n = - 6

n - 2 = 0

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answer: (2, -6)

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2 years ago

Find m<br> A 36<br> B 132<br> C 24<br> D 12

iogann1982 [59]

Answer:

Step-by-step explanation:

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2 years ago

which of the following demonstrates how the first 21 on the left side of the triangle is calculated using the combination patter

d1i1m1o1n [39]

Answer:

Step-by-step explanation:

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2 years ago

If c+1/d=5 , what is the value of 30d/2c+2

klemol [59]

Answer:

$d\in R,\hspace{5}d\neq 0$

Step-by-step explanation:

You can solve for any variable. From the first equation, let's solve for c :

$\frac{c+1}{d} =5\\\\c+1=5d\\\\c=5d-1$

Now, replace the value of c into the other equation:

$\frac{30d}{2c+2} \\\\\frac{30d}{2(5d-1)+2} \\$

Using distributive property

$\frac{30d}{10d-2+2} =\frac{30d}{10d} =3$

However, keep in mind that this is true for:

$d\in R,\hspace{5}d\neq 0$

8 0

2 years ago