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3 years ago

Hi!! Please help me! Need answers with explanation! 15 points!

Mathematics

2 answers:

timama [110]3 years ago

6 0

Answer:

1/5 x (5m - 3) or 0.2 (5m -3)

Step-by-step explanation:

1. We convert 1 2/5 to 7/5 = 7/5m - 3/5 x (2/3 m + 1)

2. factor out 1/5 from the expression = 1/5 x (7m - 3(2/3m + 1))

3. Distribute -3 through the parentheses = 1/5 x (7m - 2m -3)

4. Collect like terms = 1/5 x (5m - 3)

olganol [36]3 years ago

4 0

Answer:

1. Simplify the expression.

29m - 15

_______

2. 11 (5x + y)

________

Step-by-step explanation:

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Lainey is sliding down a water slide that is 420 feet long at a rate of 42 feet per second. How long will it take Lainey to trav

BARSIC [14]

Answer:

10 seconds.

Step-by-step explanation:

420/42 = x amount of seconds.

It took Lainey 10 seconds.

3 0

3 years ago

I need help, I don’t need an explanation, just the answer

meriva

Answer:

$x = 48 \: \: \: \: \: \: y = 16$

Step-by-step explanation:

$y = - x + 4y$

$y + x = 4y$

$y + x - 4y = 0$

$- 3y + x = 0$

$- x + 4y = 16$

$- 3y + x = 0$

$- 3y = - x$

$y = - \frac{1}{3} ( - 1)x$

$y = \frac{1}{3} x$

$4 \times ( \frac{1}{3} )x - x = 16$

$\frac{1}{3}x = 16$

$x = 48$

$y = \frac{1}{3} \times 48$

$y = 16$

Hope this is correct and helpful

HAVE A GOOD DAY!

5 0

3 years ago

Read 2 more answers

(2y+3)(3y^2+4y+5) use the chart to multiply the binomial by the trinomial

astra-53 [7]

(2y+3)(3y^2+4y+5)

so u just multiply all the things from different brackets.

2y*3y^2 = 6y^3

2y*4y = 8y^2

2y*2 = 4y

3*3y^2 = 9y^2

3*4y = 12y

3*5 = 15

so 6y^3+8y^2+4y+9y^2+12y+15

thats the answer BUT u need to collect the like terms, otherwise u probably wont get full marks on the question, so:

6y^3+17y^2+16y+15

i hope this helps :)

someone correct me if im wrong

8 0

3 years ago

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GaryK [48]

Answer:

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4 0

3 years ago

Read 2 more answers

Every orthogonal matrix is diagonalizable. O True O False

Simora [160]

Answer:

FALSE

Step-by-step explanation:

the correct answer is FALSE

A matrix is said to be orthogonal when it is multiplied by its own transpose then the matrix comes out to be Identity.

$A^T.A = I$

the basic condition for a matrix to be diagonalizable is that the matrix should be symmetric.

but an orthogonal matrix is not necessarily symmetric so, the statement is false.

5 0

3 years ago