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
vladimir1956 [14]
3 years ago
7

15 POINTS!!!!!! PLEASE HELP!!The length of a rectangle is four times its width. If the perimeter is at most 130 centimeters, wha

t is the greatest possible value for the width? 13 cm 21.7 cm 26 cm 52 cm
Mathematics
1 answer:
marin [14]3 years ago
8 0
Here is the information we have:

1. The perimeter is at most 130 cm.
2. The length of the rectangle is 4 times the width.
    We can let l stand for length and w for width.

The formula for the perimeter of a rectangle is 2l + 2w.
We have to change the formula a bit.
The length of this rectangle is going to be 4 times the width
So, replace 2l with 2(4w).

Then make this equation equal to 130.

2(4w) + 2w = 130 ; Start
8w + 2w = 130      ; Distribute the 2 across the 4w
10w = 130             ; Combine the like terms 8w and 2w
w = 13                   ; Divide both sides by the coefficient of w. Which is 10

You might be interested in
PLEASE HELP...
Sladkaya [172]

10.38

i multiplied each number and the answers that i got i added them to get the area

3 0
3 years ago
Whats the right answer???
Ipatiy [6.2K]

Answer:

45 21 31

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Chicken Delight claims that 87% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 or
jeka57 [31]

Answer:

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

Step-by-step explanation:

In this question we have to test an hypothesis.

The null and alternative hypothesis are:

H_0: \pi\geq0.87\\\\H_a:\pi

The significance level is assumed to be 0.01.

The sample of size n=80 gives a proportion of p=61/80=0.7625.

The standard deviation is:

\sigma=\sqrt{\frac{\pi(1-\pi)}{N} }=\sqrt{\frac{0.87*0.13}{80} }=0.0376

The statistic z is then

z=\frac{p-\pi+0.5/N}{\sigma}=\frac{0.7625-0.87+0.5/80}{0.0376} } =\frac{-10125}{0.0376} =-2.70

The P-value is

P(z

The P-value (0.003) is smaller than the significance level (0.010), so the effect is significant. The null hypothesis is rejected.

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

6 0
3 years ago
Erstand and Find Simple Probability
anygoal [31]

Answer:

<u>P (not white) = 2/3</u>

Step-by-step explanation:

<u>Probability (not white)</u>

  • No. of non-white marbles / Total marbles
  • 8 + 14 + 10 / 8 + 16 + 14 + 10
  • 32/48
  • <u>2/3</u>
3 0
2 years ago
Read 2 more answers
The hypotenuse of a right triangle measures 2 sqrt 15 centimeters and its shorter leg measures 2 sqrt 6
ioda

Answer: please see the attachments for the solution.

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • Can I have workings out plz x
    11·1 answer
  • the frame of a picture is 28 cm by 32 cm outside and is of uniform width.What is the width of the frame if 192 cm2 of the pictur
    11·1 answer
  • PLeAsE hElP<br> ASAPPP<br> :/<br> *Will give 25 points and Brainliest...*
    10·1 answer
  • a patient receives 150 cc of medication in an IV drip over 4 hours.What is the rate per hour of this dose
    15·1 answer
  • Scores on a certain intelligence test for children between ages 13 and 15 years are approximately normally distributed with μ=10
    12·1 answer
  • Ingrid mixes 3.6 pounds of almonds with some raisins to make a trail mix. She divides the trail mix into 12 equal portions. Each
    5·2 answers
  • Please help! This is a big part of my grade. I will give brainliest.
    13·1 answer
  • Work out the circumference of the circle when the radius is 6mm and give the answer in terms of pie.
    12·1 answer
  • Please help me now ASAP PLEASE!
    13·2 answers
  • Solve the problem below and show your work
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!