1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alecsey [184]
3 years ago
7

TIMED TEST PLEASE HELP!!!!! Explain how you got the answer as well!

Mathematics
2 answers:
maks197457 [2]3 years ago
6 0

Answer:

Step-by-step explanation:

Perimeter= all sides added together

so in this case

3x+1 = 2x + 2x + x-1 + x+2 + x-1 + x + 2

now you may be wondering why i put two 2x's, two 2+x, and two x-1  , the far left side is 2x and has 2 lines and so does the bottom side which has 2 lines so theyre congruent ( the same case for the 2+x and x-1 )  so you need to account for all sides.

so lets simplify this huge equation!

3x+1 = 4x + 1x - 1 + 1x + 2 + 1x - 1 + 1x + 2

3x+1 = 8x - 1 + 2 - 1 + 2

3x + 1 = 8x + 2

-3x on both sides

1 = 5x + 2

-2 on each side

-1 = 5x

x = -1/5

Alla [95]3 years ago
5 0

Answer:

90

Step-by-step explanation:

50+40=90

i really hope this helps... take care

You might be interested in
The foci and the directrices of the hyperbola are labeled. Which equation represents the hyperbola? (x-3)^2/16 - y^2/9= 1 x^2/16
Gnom [1K]

Answer:

Step-by-step explanation:

Hyperbola are generally written as

(x-h)² / a² - (y-k)² / b² = 1

Where,

(h, k) is the center is

"a" is the semi-transverse axis

"b" is the semi-conjugate axis

The focus and the directives is generally describe as

The foci of the graph are

(h + a⋅e, k) and (h − a⋅e, k)

The directrices of the graph are

x = h + a / e and x = h − a / e

Comparing this to the equation given

1. (x-3)² / 4² - y² / 3² = 1

This is an hyperbole of centre (3,0)

And parallel to the x axis

2. x² / 4² - (y-3)² / 3² = 1

This is also an hyperbole of center (0,3) and parallel to the x axis

3. (y-3)² / 3² - x² / 4² = 1

This is an hyperbole parallel to the x axis

4. y² / 3² - (x-3)² / 1² = 1

This is an hyperbole parallel to the y-axis

5 0
3 years ago
Lynn asked six friends how many cars their parents own. She recorded 1, 1, 2, 2, 2, and 4 cars. What is the mean absolute deviat
galben [10]
To find the mean absolute deviation, you have to find the mean first.
1+1+2+2+2+4=12
12 divided by 6 numbers=2         The mean of that is two
Next, you have to find the amount the original numbers are away from the mean.
1= 1 away from 2               2=0 away from 2               4=2 away from 2
You should get: 1,1,0,0,0,2              Next, you have to find the mean of the new set of numbers.    1+1+0+0+0+2=4
4 divided by 6= 2/3
The mean absolute deviation is 2/3
8 0
4 years ago
Read 2 more answers
You are blowing air into a spherical balloon at a rate of 33 cubic inches per second. Given that the radius of the balloon is 22
Nadya [2.5K]

Answer:

a) the radius of the balloon increases at a rate of 5.42 in/s

b) the surface area of the balloon increases at a rate of 3 in²/s

Step-by-step explanation:

a) since the volume of a sphere V is

V= 4/3*π*R³

where R= radius , then the rate of change of the volume is

V' = dV/dR= 4*π*R²

using the chain rule

dV/dt = dV/dR*dR/dt

thus

k = 4*π*R² * dR/dt

dR/dt = k/(4*π*R²)

replacing values

dR/dt = k/(4*π*R²) = (33 in³/s) /(4*π*(22 in)²] = 5.42 in/s

then the radius of the balloon increases at a rate of 5.42 in/s

b) since the surface area is

S=4*π*R²

then

S' = dS/dR= 8*π*R

and

dS/dt = dS/dR*dR/dt = 8*π*R * k/(4*π*R²) = 2*k/R

replacing values

dS/dt = 2*k/R = 2*(33 in³/s)/( 22 in) = 3 in²/s

then the surface area of the balloon increases at a rate of 3 in²/s

8 0
4 years ago
Whats is the answer to x+2=-2x+4
Dvinal [7]
X=2/3 yeah i got that
7 0
3 years ago
3x^4/5(x^3/5-2x^-2/5
Genrish500 [490]

Answer:

Step-by-step explanation:

3x^4/5(x^3/5-2x^-2/5)

=3x^12/25-6x^-8/25

8 0
4 years ago
Other questions:
  • Linda enrolls for 10 credit-hours for each of two semesters at a cost of $500 per credit-hour (tuition and fees). In addition, t
    8·1 answer
  • Evaluate:<br> <img src="https://tex.z-dn.net/?f=8%5E%7B%5Cfrac%7B5%7D%7B3%7D%20%7D" id="TexFormula1" title="8^{\frac{5}{3} }" al
    7·1 answer
  • Markus scared 85, 92, 82, and 94 on the first four tests of the semester. His teacher has not yet told him his score on his fift
    13·2 answers
  • The Martin family is comparing the costs of two different cable companies. Direct TV charges a
    9·2 answers
  • Isosceles triangle LMN is graphed with vertices L(0, 1), M(3, 5), and N(6,1). What is the slope of side LN?
    14·2 answers
  • Pls help my sister doesn't know this question ​
    12·1 answer
  • 1:
    10·1 answer
  • Evaluate [5 - (5 - 5(2 - 5) + 2)] + 6​
    5·2 answers
  • I neeeeeeeeeeeed this
    6·2 answers
  • What would be the best response to the question in the picture above please respond soon. (will give brainliest)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!