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
ExtremeBDS [4]
2 years ago
15

The length of a rectangle it twice it's within. If the perimeter of the rectangle is 30 cm, find its area.

Mathematics
1 answer:
Xelga [282]2 years ago
6 0

w - width

2w - length (l)

30 cm - perimeter

w + w + 2w + 2w = 6w - perimeter

The equation:

6w = 30    <em>divide both sides by 6</em>

w = 5 cm

2w = 2(5) = 10

l = 10 cm

The area of a rectangle: A = lw.

Substitute:

A = (5)(10) = 50

<h3>Answer: The area is 50cm²</h3>
You might be interested in
Marla swims twice a week. her equipment cost her $32.85 and she has a membership to the pool for $35 plus #3.50 per visit. she c
evablogger [386]
Around $634.85 per year

Because:

$32.85+$35(12 months)+$3.5(52 weeks in a year)= Total cost per year
                   $420                       $182

        $32.85 + $420 + $182 = $634.85 per year
3 0
3 years ago
What would be the most logical first step for solving this quadratic equation?
PolarNik [594]

Answer:

D

Step-by-step explanation:

So that you can have an equation equal to zero to solve for x

4 0
3 years ago
Factor the expression.<br> 2x + 8
IgorC [24]

Answer:

2x+8

2 is common

2(x+4)=0

Step-by-step explanation:

5 0
2 years ago
Solve for u.<br> -6=-2u +4(u-5)
sergij07 [2.7K]

Answer: u=7

Step-by-step explanation:

-6= -2u+4(u-5)

-6= -2u+4u-20

-6= 2u-20

14= 2u

7=u

5 0
3 years ago
Read 2 more answers
Suppose I claim that the average monthly income of all students at college is at least $2000. Express H0 and H1 using mathematic
pishuonlain [190]

Answer:

For this case we want to test if the the average monthly income of all students at college is at least $2000. Since the alternative hypothesis can't have an equal sign thne the correct system of hypothesis for this case are:

Null hypothesis (H0): \mu \geq 2000

Alternative hypothesis (H1): \mu

And in order to test this hypothesis we can use a one sample t or z test in order to verify if the true mean is at least 200 or no

Step-by-step explanation:

For this case we want to test if the the average monthly income of all students at college is at least $2000. Since the alternative hypothesis can't have an equal sign thne the correct system of hypothesis for this case are:

Null hypothesis (H0): \mu \geq 2000

Alternative hypothesis (H1): \mu

And in order to test this hypothesis we can use a one sample t or z test in order to verify if the true mean is at least 2000 or no

7 0
2 years ago
Other questions:
  • What would the answer be?
    14·2 answers
  • Find the product 0.03×44.2
    6·2 answers
  • Which answer shows 0.05 written in scientific notation?
    5·2 answers
  • I want to know the answer and how to solve it in the calculator
    13·1 answer
  • Two objects are moving along separate linear paths where each path is described by position, d, and time, t. The variable d is m
    12·1 answer
  • Please help me with this homework
    13·2 answers
  • 110 percent of 90 is what number
    15·2 answers
  • What is 7,000,000 + 300,000 + 70,000 + 3,000 + 80 + 2 in standard form?
    13·2 answers
  • Guys help me pls help me
    15·1 answer
  • 1. change .84 to a fraction, reduced
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!