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3 years ago

Plz plz answer this 10pts:)

Mathematics

1 answer:

Sever21 [200]3 years ago

5 0

Answer:

decimal form 1.9 mixed number is 1 9/10

Step-by-step explanation:

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Find each product. (X3+2x2)x4 PLEASE HELP!!! ASAP!!!

Rina8888 [55]

Answer:

4x^3+8x^2

Step-by-step explanation:

Multiply each term:

4x^3+8x^2

PLZ MARK ME BRAINLIEST

4 0

4 years ago

State whether the equation is true, false, or an open sentence. 9 = 5 + 4

Molodets [167]

Answer:

This equation is true because when you flip it 5+4=9 it is the same. and 5+4=9

Step-by-step explanation:

9=5+4 5+4=9

4 0

3 years ago

Read 2 more answers

If logx27 + logy4 =5 and logx27 - logy4 =1 find x and y

Elanso [62]

Answer:

Hello,

I have reply too quick in comments (sorry)

Step-by-step explanation:

$\left\{\begin{array}{ccc}log_x (27)+log_y (4)=5\\log_x (27)-log_y (4)=1\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}2*log_x (27)=6\\2*log_y (4)=4\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}log_x (27)=3\\log_y (4)=2\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}x^{log_x (27)}=x^3\\y^{log_y (4)}=y^2\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}27=x^3\\4=y^2\\\end{array}\right.\\\\\\\left\{\begin{array}{ccc}x=3\\y=2\\\end{array}\right.\\\\$

5 0

3 years ago

Find the x-values that are solutions of the equation 5cot^2x-15=0

julia-pushkina [17]

First solve for the trig function 'cot'
$cot^2 x = \frac{15}{5} = 3$

Next take the sqrt of both sides (include plus/minus)
$cot x = \pm \sqrt{3}$

Now take reciprocal of both sides, this will change trig function to 'tan'
(cot = 1/tan)

$tan x = \pm \frac{1}{\sqrt{3}} = \pm \frac{\sqrt{3}}{3}$

Finally use the unit circle or inverse tan on your calculator to find x.
There will be 4 solutions, one for each quadrant.

$x = \frac{\pi}{6}, \frac{5\pi}{6}, \frac{7\pi}{6}, \frac{11\pi}{6}$

3 0

3 years ago

If Sam's present age is x years, what will be his age in years after 20 years from now?

Vitek1552 [10]

It would be x+ 20
explanation: it jus be like that

4 0

3 years ago