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
NeTakaya
2 years ago
13

The area of a rectangle is 78 square meters. The length of the rectangle is one more than twice the width. What are the dimensio

ns of the rectangle?
NO FILES PLEASE
Mathematics
2 answers:
raketka [301]2 years ago
6 0

Answer:

6&13.All you need to do is find the factors of 78 and plug the smaller number into the equation provided in the equation. 2x+1 is our equation. so6*13 is 78 and 2x+1=13... 6for x to get 2*6+1=13

Step-by-step explanation:

crimeas [40]2 years ago
3 0

area \:  = 78

area = length \:  \times  \: width

78 = (x)(2x + 1)

x = 6

Thus the dimensions are 6 & 13

You might be interested in
10 Points<>I need help ASAP!!!
ZanzabumX [31]

Answer:

Step-by-step explanation:

A and D

8 0
2 years ago
2x + 10 + 3x = 7x + 12
wlad13 [49]

Answer:

<h2>x = -1</h2>

Step-by-step explanation:

2x+10+3x=7x+12\qquad\text{combine like terms}\\\\(2x+3x)+10=7x+12\\\\5x+10=7x+12\qquad\text{subtract 10 from both sides}\\\\5x+10-10=7x+12-10\\\\5x=7x+2\qquad\text{subtract}\ 7x\ \text{from both sides}\\\\5x-7x=7x-7x+2\\\\-2x=2\qquad\text{divide both sides by (-2)}\\\\\dfrac{-2x}{-2}=\dfrac{2}{-2}\\\\x=-1

8 0
3 years ago
Read 2 more answers
HELP PLEASE ASAP!!! Khan Academy unit test!
dsp73

Answer:

As=0.13

Step-by-step explanation:

If we have central angle we use this rule to find area of sector :

As=\pi r^{2}(\frac{C}{360})

C is central angle. r is radius.

As=\pi *9*\frac{\frac{9\pi }{17} }{360} =\\\\As=\pi *9*\frac{9\pi }{17*360} =\\\\

Evaluate :

\frac{798.63}{6120}=0.13

4 0
3 years ago
Use the formula to find the standard error of the distribution of differences in sample means, x¯1-x¯2. Samples of size 100 from
garri49 [273]

Answer:

standard error = 2.11

Step-by-step explanation:

First we stablish the data that we have for each sample:

<u>Population 1</u>                                          <u>Population </u>2

n₁ = 100                                                     n₂ = 90

x¯1= 95                                                    x¯2 = 75

σ₁ = 14                                                        σ₂ = 15                  

To calculate the standard error of each sample we would use the formulas:

σ = σ₁/√n₁

σx¯2 =  σ₂/√n₂

Now, in order to obtain the standard error of the differences between the two sample means we combine those two formulas to obtain this:

σx¯1 - σ x¯2  = √(σ₁²/n₁ + σ₂²/n₂ )

So as you can see, we used the square root to simplify and now we require the variance of each sample (σ²):

σ₁² = (14)² = 196

σ₂² = (15)² = 225

Now we can proceed to calculate the standard error of the distribution of differences in sample means:

σx¯1 - σx¯2  = √(196/100 + 225/90) =  2.11

This gives an estimate about how far is the difference between the sample means from the actual difference between the populations means.

6 0
3 years ago
Answer with solution
adelina 88 [10]
In general, the scalar multiple of k times u,<span> is this: 

</span>k\vec u = k(ux, uy)=(Kux,Kuy) 

So, here's how we find 3\vec v 

3\vec v = 3 * (2,4) = (3*2,3*4) &#10;&#10;= (6,12) 

The answer is <span><span>(6,12).</span></span>
6 0
2 years ago
Read 2 more answers
Other questions:
  • Can someone help me with this two questions pls!!! I don't know how I can solve pls!
    7·2 answers
  • A circular archery target has a 24-in. diameter. the outer ring is blue. the inner circle is pink with a 6-in. diameter. find th
    6·2 answers
  • At jacks laundromat, 6 of the washers must be replaced. These washers represent 1/4 of the total number of washers. If w represe
    6·2 answers
  • Triangle abc has angle measures as shown What is the value of x? Show your work.
    7·1 answer
  • How to solve it don't understand a thing
    8·1 answer
  • Marking brainliest<br> Please help
    15·2 answers
  • Please help me I'm stup*d​
    15·1 answer
  • 6. Calculate the slope of the line given the two points: (4,9) and (7,11).
    13·1 answer
  • Find the percent change from the first value to the second. 40; 50
    11·1 answer
  • Help fast please im so lost
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!