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3 years ago

What algebraic property does this statement show?

Mathematics

2 answers:

Mnenie [13.5K]3 years ago

3 0

The answer is (B) hope that helps

Helen [10]3 years ago

3 0

The correct answer among all the other choices is B. symmetric property. The algebraic property this statement show 3 + (–7) = (–7) + 3 is symmetric property. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.

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Please help me need ASAP

Jet001 [13]

(3) y= 5x+ 13

you have to do the rise (ryse - with a y because it is the y value) over the run to get your slope and then subtract your slope from 18 to get 13.

4 0

3 years ago

HELPPPP

AnnZ [28]

Answer:

130⁰. unsure. angle sum, 25+25+x =180, so x=180-25-25

4 0

3 years ago

Every day 10% of the liquid present in the morning in Kyle's open container will evaporate. At the end of three days, what perce

lozanna [386]

At the end of three days, $72.9$ % of the original amount of liquid remains in Kyle's container .

Step-by-step explanation:

Here we have , Every day 10% of the liquid present in the morning in Kyle's open container will evaporate. At the end of three days, We need to find what percent of the original amount of liquid remains in Kyle's container . Let's find out:

Let's suppose initially we have 100% of liquid present so ,

At day 1:

10% of the liquid present(100%) in the morning in Kyle's open container will evaporate , So left is :

⇒ $100- \frac{100(10)}{100}$

⇒ $100-10$

⇒ $90$ %

At day 2:

10% of the liquid present(90%) in the morning in Kyle's open container will evaporate , So left is :

⇒ $90- \frac{90(10)}{100}$

⇒ $90-9$

⇒ $81$ %

At day 3:

10% of the liquid present(81%) in the morning in Kyle's open container will evaporate , So left is :

⇒ $81- \frac{81(10)}{100}$

⇒ $81-8.1$

⇒ $72.9$ %

Therefore , At the end of three days, $72.9$ % of the original amount of liquid remains in Kyle's container .

8 0

3 years ago

Loxlor <img src="https://tex.z-dn.net/?f=10%20%5Ctimes%2010" id="TexFormula1" title="10 \times 10" alt="10 \times 10" align="

Marina CMI [18]

Answer:

Step-by-step explanation:

10 in 10 places is 100. 10*1=10. 10*2=20..10*3=30.10*4=40,. 10*5=50,10*6=60,,,10*7=70,,. 10*8=80,. 10*9=90,. 10*10=100.

8 0

3 years ago

PLEASE HELP I WILL GIVE A LOT OF POINTS!

vazorg [7]

9514 1404 393

Answer:

(2.27, 0.96)

Step-by-step explanation:

The orthocenter is the point of intersection of altitudes of the triangle. The equation for an altitude is the equation of a line through a vertex that is perpendicular to the opposite side.

For example, the line perpendicular to side AC can be found as ...

(∆x, ∆y) = C-A = (3, -1) -(-4, 2) = (7, -3)

∆x(x -h) +∆y(y -k) = 0 . . . . perpendicular through point (h, k)

For side AC, we want the point to be B(4, 5), so the equation is ...

7(x -4) -3(y -5) = 0

7x -3y -13 = 0

Similarly, the altitude to side AB can be written as ...

(∆x, ∆y) = B -A = (4, 5) -(-4, 2) = (8, 3)

8(x -3) +3(y +1) = 0

8x +3y -21 = 0

By the "cross multiplication method", the solution to these equations is ...

x = (-3(-21) -(3(-13))/(7(3) -8(-3)) = (63+39)/(21+24) = 102/45 = 2 4/15 ≈ 2.27

y = (-13(8) -(-21)(7))/45 = 43/45 ≈ 0.96

The orthocenter is near (2.27, 0.96).

A graphing application confirms this result.

_____

Additional information about the cross multiplication method

For the general form equations ...

ax +by +c = 0
dx +ey +g = 0

The "cross multiplication method" has you write the array ...

$\begin{array}{cccc}a&b&c&a\\d&e&g&d\end{array}$

and form the "cross products" in groups of four coefficients:

D = ae -db, X = bg -ec, Y = cd -ga

Then the solution to the set of equations is ...

1/D = x/X = y/Y ⇒ x = X/D, y = Y/D

Additional note

Videos of this method show you writing the array as bcab/egde and using the final equation x/X=y/Y=1/D. The above gets the same result in a more straightforward manner.

3 0

3 years ago