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kipiarov [429]
3 years ago
12

Need help quick! Will give brainliest to first right answer.

Mathematics
1 answer:
alexgriva [62]3 years ago
8 0

Answer:

the first one  or the last one

Step-by-step explanation:

5x+5y = 10 and 2x+2y=4

0 = 0

3x-6y = 4 and - 4x+8y=7

0 = 37 / 3

6x+2y = 6 and 7x+3y=9

0 = 3

3x-4y = 16 and 2x+3y = 5

x=4 and y=−1

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"five times the sum of a number and 6 is 48"
makvit [3.9K]

Answer:

Sum of the number is 8.4

Step-by-step explanation:

x = sum of a number

(5 × x) + 6 =48

5x + 6 = 48

5x + (6 - 6) = (48 - 6)

5x = 42

5x ÷ 5 = 42 ÷ 5

x = 8.4

3 0
3 years ago
Read 2 more answers
Find the sum of series 4/(4n-3) (4n+1)
ANTONII [103]
\dfrac4{(4n-3)(4n+1)}=\dfrac1{4n-3}-\dfrac1{4n-1}

Assuming the sum starts at n=1, the Nth partial sum is

\displaystyle\sum_{n=1}^N\left(\frac1{4n-3}-\frac1{4n-1}\right)=\left(1-\frac15\right)+\left(\frac15-\frac19\right)+\cdots+\left(\frac1{4N-7}-\frac1{4N-3}\right)+\left(\frac1{4N-3}-\frac1{4N+1}\right)
\displaystyle\sum_{n=1}^N\left(\frac1{4n-3}-\frac1{4n-1}\right)=1-\frac1{4N-1}

As N\to\infty, you're left with simply 1.
8 0
3 years ago
Given matrix A below, and that A = B, find the value of the elements in B. A = 9 −2 3 2 17 0 3 22 8 b11 = b12 = b13 = b21 = b22
GuDViN [60]

Answer:

b_{11}=9,b_{12}=-2,b_{13}=3,b_{21}=2,b_{22}=17,b_{23}=0,b_{31}=3,b_{32}=22,b_{33}=8

Step-by-step explanation:

Consider the given matrix

A=\left[\begin{array}{ccc}9&-2&3\\2&17&0\\3&22&8\end{array}\right]

Let matrix B is

B=\left[\begin{array}{ccc}b_{11}&b_{12}&b_{13}\\b_{21}&b_{22}&b_{23}\\b_{31}&b_{32}&b_{33}\end{array}\right]

It is given that

A=B

\left[\begin{array}{ccc}9&-2&3\\2&17&0\\3&22&8\end{array}\right]=\left[\begin{array}{ccc}b_{11}&b_{12}&b_{13}\\b_{21}&b_{22}&b_{23}\\b_{31}&b_{32}&b_{33}\end{array}\right]

On comparing corresponding elements of both matrices, we get

b_{11}=9,b_{12}=-2,b_{13}=3

b_{21}=2,b_{22}=17,b_{23}=0

b_{31}=3,b_{32}=22,b_{33}=8

Therefore, the required values are b_{11}=9,b_{12}=-2,b_{13}=3,b_{21}=2,b_{22}=17,b_{23}=0,b_{31}=3,b_{32}=22,b_{33}=8.

3 0
3 years ago
Read 2 more answers
A bag contains 9 marbles: 4 are green, 3 are red, and 2 are blue. Susan chooses a marble at random, and without putting it back,
Valentin [98]

The probability of picking blue is the number of blue marbles/ total marbles.

For the first pick there are 2 blue marbles and 9 total marbles so the probability of picking blue would be 2/9

After picking the first marble there would be 1 blue marble left and 8 total marbles. The probability of picking the blue marble would be 1/8

To find the probability of picking both, multiply the probability of each one by each other:

2/9 x 1/8 = 2/72, which reduces to 1/36

The answer is 1/36

3 0
3 years ago
Which fraction has a value less than 5-7?
lesya [120]

Answer:

3/4

Step-by-step explanation:

4 0
3 years ago
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