Ask question

Ask question

All categories

3 years ago

10

The perimeter of rectangle ABCD is 42 cm and the area is 80 cm2. Which equation can be used to find the dimensions of the rectan

gle? (Hint: Set up a system of equations).
xy + 2x + 2y = (42)(80)
x^2 + 80x - 42 = 0
x^2 - 42x + 80 = 0
x^2 - 21x + 80 = 0

1 answer:

Nikolay [14]3 years ago

4 0

Don't hold me accountable but I believe it is the 2nd equation.

You might be interested in

Please Help me with this. please don't take my points-

earnstyle [38]

Answer:

c

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Identify the transformation that was applied to this letter.

Shtirlitz [24]

Identify the transformation that was applied to this letter.

D. Rotation about the origin

8 0

2 years ago

Please help I’ll make you the brainiest (no link people please)

ArbitrLikvidat [17]

Answer:

Step-by-step explanation:

A=p+prt

A-p=prt

A-p/pr=t

4 0

3 years ago

Read 2 more answers

The equation, y = 1250x + 22,850, gives the salary of a person as "y" after the stated number of years (x). Model the data with

Sidana [21]

Answer:

(a) $y = 6250x +17850$ --- The function

(b) $y = 49100$ --- The salary in 5 years

Step-by-step explanation:

Given

$y = 1250x + 22850$

Solving (a): Model the function around (1,24100) and (3,36600)

First, we calculate the slope

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{36600 - 24100}{3 - 1}$

$m = \frac{12500}{2}$

$m = 6250$

The function is then calculated as:

$y = m(x - x_1) + y_1$

$y = 6250(x - 1) + 24100$

$y = 6250x - 6250 + 24100$

$y = 6250x +17850$

Solving (b): Salary in 5 years

Here:

$x = 5$

So:

$y = 6250x +17850$

$y = 6250*5 +17850$

$y = 49100$

8 0

3 years ago

When 5x2+2=4x is solved using the quadratic formula, what are the values of a,b, and c?

viktelen [127]

Hey there,

<u>What </u><u>are </u><u>the </u><u>values </u><u>of </u><u>a,</u><u> </u><u>b </u><u>and </u><u>c?</u>

5x² + 2 = 4x

5x² + 2 - 4x = 4x - 4x

5x² - 4x+ 2 = 0

<em>Quadratic </em><em>général </em><em>e</em><em>quation</em><em>:</em>

ax² + bx + c = 0

a = 5
b = -4
c = 2

I hope this helps ✅(◠‿◕)

3 0

3 years ago