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3 years ago

QUICKEST AND MOST CORRECT ANSWER GETS BRAINLIEST 0LUS ILL FOLLOW U

Mathematics

1 answer:

RideAnS [48]3 years ago

8 0

Answer:

Step-by-step explanation:

-2x-1 =y

-2x 2= -4-1

= -5

=2, -5

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In a class of 35 students, 15 are seniors, 20 are females, and 7 are both a senior and a female. If I choose a student at random

zimovet [89]

Answer:

Step-by-step explanation:

15 + 20 / 35

35/35 = 1 (certain)

The probability of choosing a female or senior is 1, because these are the only two groups represented in the class.

I'm always happy to help :)

8 0

3 years ago

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Colleen says she is thinking of a 4 digit number im which all the digits are the same. The value of the digit in the hundreds pl

uysha [10]

Well, the number should be 2,222 since she wants the hundreds place to be a 2, being worth 200. Since she wanted all the digits to have the same number, it would be 2,222 for your final answer.

Hope this helped!

Nate

7 0

3 years ago

What does this mean? I don’t understand.

Nutka1998 [239]

ninety four means $94. 36/100 means $0.36. when you put these together you get $94.36

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2 years ago

Calculate the arithmetic sequence in which a9=17 and the common difference is d=-2.1

jek_recluse [69]

Answer:

$S_{31}=71.3$

Step-by-step explanation:

The nth term of an arithmetic sequence is given by the formula,

$U_n=a_1+(n-1)d$

We were given that the 9th term is $17$ .

$\Rightarrow 17=a_1+(9-1)(-2.1)$

$\Rightarrow 17=a_1+(8)\times(-2.1)$

$\Rightarrow 17=a_1-\frac{84}{5}$

$\Rightarrow 17+\frac{84}{5}=a_1$

$\Rightarrow a_1=\frac{169}{5}$

The sum of the first n-terms is given by the formula,

$S_n=\frac{n}{2}(2a_1+(n-1)d)$

To find $S_{31}$ , we substitute $n=31$ , $a_1=\frac{169}{5}$ and $d=-2.1$ .

$\Rightarrow S_{31}=\frac{31}{2}(2(\frac{169}{5}+(31-1)(-2.1))$

$\Rightarrow S_{31}=\frac{31}{2}(2(\frac{169}{5}+(30)(-2.1))$

$\Rightarrow S_{31}=\frac{31}{2}(\frac{23}{5})$

$\Rightarrow S_{31}=\frac{713}{10}$

$\Rightarrow S_{31}=71.3$

The correct answer is D

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3 years ago

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The total weight of 9 bags of potatoes is 36 kilograms each bag weights the same amount what is the weight in grams of each bag

ra1l [238]

Answer:

4000

Step-by-step explanation:

36kg = 36000g

36000g/9 bags = 4000g

5 0

2 years ago

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QUICKEST AND MOST CORRECT ANSWER GETS BRAINLIEST 0LUS ILL FOLLOW U​

QUICKEST AND MOST CORRECT ANSWER GETS BRAINLIEST 0LUS ILL FOLLOW U