Jack bought a stereo on sale for $231. The original price was $385. What was the percent of decrease in price?

Answer: 10;20.478261

Step-by-step explanation: I hope that helps if you don,t undertand tell me

Answer:

c

Step-by-step explanation:

Answers:

y=2x2−20x+51

Step-by-step explanation:

Vertex:

(5,1)

Focus:

(5,98)

Axis of Symmetry:

x=5

Directrix:

y=78

1) A(1;2) and slope=3.

slope-interception form is y=s*x+i, where s - slope, i - interception.

if to substitute the given coordinates and slope into the equation, then 2=3*1+i, ⇒ i=-1. It means, the required equation is:

y=3x-1.

2) A(1;2) and B(3;-2).

the common form is:

[tex]\frac{x-X_B}{X_A-X_B} =\frac{y-Y_B}{Y_A-Y_B}.[/tex]

If to substitute the given coordinates into the common form, then:

[tex]\frac{x-3}{1-3} =\frac{y+2}{2+2} ; \ => \ \frac{x-3}{-2} =\frac{y+2}{4}; \ => \ y=-2x+4.[/tex]

Answer:

[tex]y = \frac{4}{3} x - 4[/tex]

Hope it helped:)

Answer:

it's a negative answer Because there's one negative and one positive and if there are your two negatives that makes a positive and it's also the same with two positives

Answer:

1/35

Step-by-step explanation:

plz mark brainllest

Answer:

1/7 divided by 5 =

1/35

in decimal form, its:

0.0285714...

Answer:

Step-by-step explanation:

[tex]27^{\frac{2}{3} } =(3^3)^{\frac{2}{3} }=3^{3 \times \frac{2}{3} }=3^2=9[/tex]

Answer:

0.03

Step-by-step explanation:

Answer:

.03 on Khan Academy

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

It is C because two sides are the same so isosceles

Answer:

I was learning that to but it is way to blurred out and I can not see the text.

You need to make a clear picture if you need answers or no one can help you because we don't know what it say's.

Step-by-step explanation:

Answer: 1,488,000

Please tell me if I’m wrong.

Answer:

4 1/2 inches

Step-by-step explanation:

Hi! I hope this helps!:

Since Ms. Henderson's plant is 6 1/3, all we need to do is subtract 1 5/6 from it! We do this because it says, "1 5/6 inches taller than Megan's plant".

For the next steps, you can change the mixed numbers into decimals or into improper fractions! 6 1/3 would be 19/3. 1 5/6 would be 11/6. You can find a common denominator for both. I would make 19/3 to 38/6.

Lastly, you need to subtract and make it into simplest form! 38/6 - 11/6 = 27/6.

You could simplify it to 9/3, 4.5, or 4 1/2 inches.

Answer:

The is 4 1/2. just like

ChocoWaffoALT said.

Answer:

It is 15 but I don't know what the steps are since I took a test on this question and failed to get the right answer.

Answer:

70%

Step-by-step explanation:

49/70 = 0.7

0.7*100 = 70

==========================================================

Explanation:

For the original two digit number, we have:

The original number is 10x+y. For instance, if x = 5 and y = 7, then we have 10x+y = 10*5+7 = 57.

This original number 10x+y swaps its digits to 10y+x. Then we add up the two expressions:

(original)+(swapped) = (10x+y)+(10y+x) = 11x+11y = 11(x+y)

This sum is stated to be 154

11(x+y) = 154

x+y = 154/11

x+y = 14

Then we're told that "the ones digit in it (the original number) is 2 less than the tens digit". Meaning that y = x-2 is another equation we can use. We'll plug this into the previous equation we found and solve for x

x+y = 14

x+x-2 = 14 ... replace y with x-2

2x-2 = 14

2x = 14+2

2x = 16

x = 16/2

x = 8 is the tens digit of the original number

y = x-2

y = 8-2

y = 6 is the units digit of the original number

The original number is 10x+y = 10*8+6 = 86

As a check, adding 86+68 = 154 which confirms our answer.

9514 1404 393

Answer:

  (-3, 9), (-1, 11), (0, 12), (4, 16), (6, 18)

Step-by-step explanation:

The function definition tells you that adding 12 to the x-value will give you the value of f(x).

  -3 +12 = 9, for example

The (x, f(x)) values for the table are shown above.

Answer:

last option is correct

............................

Answer:

4(3x-8)=52

divide both sides by 4

4/4(3x-8)=52/4

3x-8=13

add both sides by 8

3x-8+8=13+8

3x=21

divide both sides by 3

3x/3=21/3

x=7

Step-by-step explanation:

just answered it previously =)

Answer:

4(3x-8)=52

12x-32=52

12x=52+32

12x=84

X=84/12

X= 7

Step-by-step explanation:

Answer:

it is up

Step-by-step explanation:

Answer:

Step-by-step explanation:

y=6+2x

where x is number of hours.

Answer:

Step-by-step explanation:

The simplest line you can draw with a slope of 4 is y = 4x. Use The equation to make a table

y = 4x

x    1     3     5

y    4    12    20

So I just multiplied 4 by  3 and 5 red graph below shows the three points on the line. (1,4),(3,12),(5,20)

What about a more complex line.

y = 4x + 5

x 1  3  5

y 9 17 25

The green line show (1,9),(3,17),(5,25)

Answer: M= 2 C= 4 (0,4)

Step-by-step explanation:

Formula- y=mx+c where m is the gradient and c is the y intercept

In y=2x + 4,

2 is in the place of m and 4 is in the place of c. So, m= 2 and c=4. The coordinates of the y intercept would be (0,4)

Answer:

positive

Step-by-step explanation:

the discriminant of the function is postive.

because from the graph we notice that it has 2 intercepts on x-axis, which means the function has 2 real solution when y=0

that implies the discriminant is positive.

[tex]\Delta = \sqrt{b^2-4ac}[/tex]

if [tex]\Delta > 0[/tex] we have 2 distinct real solution

if [tex]\Delta <0[/tex] we have no real solution but 2 complex solutions

if [tex]\Delta = 0[/tex] we have 2 identical real solution

Answer:

-0.9³

Step-by-step explanation:

that's the answer hope it helps

Answer:

(-0.9)×(-0.9)×(-0.9)

(-0.9)^3

Answer:

  $13,259.30

Step-by-step explanation:

The account balance with compound interest is ...

  A = P(1 +r/n)^(nt)

  A = $12,000(1 +0.05/12)^(12·2) ≈ $13,259.30 . . . . will be owed in 2 years

__

It's a straight compound interest problem. "No payments for 2 years" means the account continues to accrue compounded interest. It's basically a future-value problem, as opposed to an amortization or annuity problem where payments are involved.

Answer:

[tex]\frac{x^2+19x-56}{4x^2-32x}[/tex]

Step-by-step explanation:

To add two fractions we need a common denominator. Just by looking at the two, there are no common factors. This means the denominator would be the product of the two: 4x(x-8). In order to obtain this, we multiply the first fraction by (x-8)/(x-8) - 1, and the second by 4x/4x - 1:

[tex]\frac{x+7}{4x} *\frac{x-8}{x-8} +\frac{5}{x-8}*\frac{4x}{4x}[/tex]

We can use the distributive property to simplify:

[tex]\frac{x^2-x-56}{4x(x-8)} +\frac{20x}{4x(x-8)}[/tex]

The sum of the two is:

[tex]\frac{x^2+19x-56}{4x^2-32x}[/tex]