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2 years ago

Check the screenshot for the question. 25 POINTS

Mathematics

1 answer:

svet-max [94.6K]2 years ago

4 0

Answer: Y = -10

Step-by-step explanation:

-x + y = -27

-17 + y = -27

+17 +17

Y = -10

You can also check your work by plugging in the X and Y values and it should equal -27 . So -17 + -10 equals -27.

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How many distinct factors does 75 have?

OlgaM077 [116]

Answer:

The distinct factors of 75 are 1, 3, 5, 15, 25, 75.

Step-by-step explanation:

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3 years ago

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Express as a sum: x–y–z<br><br> plz help i will give branilly for the correct answer

babymother [125]

Answer:

i am positive it is x+y+z

Step-by-step explanation:

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2 years ago

What is the sum of -14<br> and -15?

Anton [14]

-14 + (-15) = -14 - 15 = -29
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2 years ago

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A= [2, 3; 2, 1], B=[3; 5]. Find AB & BA if possible

oksano4ka [1.4K]

Answer:

The value of AB is $\left[\begin{array}{ccc}21\\11\end{array}\right]$ and it's not possible to multiply BA.

Step-by-step explanation:

Consider the provided matrices.

$A=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right]$ , $B=\left[\begin{array}{ccc}3\\5\end{array}\right]$

Two matrices can be multiplied if and only if first matrix has an order m × n and second matrix has an order n × v.

Multiply AB

Matrix A has order 2 × 2 and matrix B has order 2 × 1. So according to rule we can multiply both the matrix as shown:

$AB=\left[\begin{array}{ccc}2&3\\2&1\end{array}\right] \left[\begin{array}{ccc}3\\5\end{array}\right]$

$AB=\left[\begin{array}{ccc}2\times 3+3\times 5\\2\times 3+1\times 5\end{array}\right]$

$AB=\left[\begin{array}{ccc}6+15\\6+5\end{array}\right]$

$AB=\left[\begin{array}{ccc}21\\11\end{array}\right]$

Hence, the value of AB is $\left[\begin{array}{ccc}21\\11\end{array}\right]$

Now calculate the value of BA as shown:

Multiply BA

Matrix B has order 2 × 1 and matrix A has order 2 × 2. So according to rule we cannot multiply both the matrix.

We can multiply two matrix if first matrix has an order m × n and second matrix has an order n × v.

That means number of column of first matrix should be equal to the number of rows of second matrix.

Hence, it's not possible to multiply BA.

5 0

3 years ago

SAVINGS ACCOUNT

yarga [219]

Answer:

$4000 was invested at 4%, 2500 was invested at 3%

Step-by-step explanation:

First and foremost the question has to be define.

Total amount raised is $6500

Savings account percentage simple interest =3%

Government Bond: 4% simple interest

Equation for amount invested at each rate:

(6500-x)0.03 + 0.04x = 235

195 - 0.03x + 0.04x = 235

0.01x = 40

x = 4000

$4000 was invested at 4%, 2500 was invested at 3%

4 0

2 years ago