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
kozerog [31]
3 years ago
9

Need help ASAP Math, Equations

Mathematics
2 answers:
romanna [79]3 years ago
6 0
Move the 1/4 to the right side by using the reciprocal.

The reciprocal of a fraction is where the top/bottom are flipped.

The reciprocal of 1/4 = 4/1 

Now the equation is
a = \frac{2}{3}*\frac {4}{1} \\  \\ a = \frac{8}{3}

Write it as a mixed number, 8/3 = 2 and 2/3
soldier1979 [14.2K]3 years ago
3 0
1/4 (a) = (2/3)

a = (2/3) * (4)

a=8/3 

a= 2 2/3
You might be interested in
Over a three-day weekend, a rental car agency charges $65 to rent a car plus $0.30 for each mile traveled. If y represents the t
raketka [301]
I believe it would be y = $0.30x + $65
5 0
3 years ago
Read 2 more answers
In the past ten years, the population of a city decreased from 90,000 to 75,000 Find the percent decrease.
vfiekz [6]
The answer is 31.5%.
8 0
3 years ago
Shalika bought a purse for $120. The tax rate is 9%.  What is the total amount Shalika paid? Enter your answer in the box.
ad-work [718]
130.80 is the answer you have to multiply 120 times 1.09
5 0
3 years ago
Read 2 more answers
The data below are the ages and systolic blood pressures (measured in millimeters of mercury) of 9 randomly selected adults. Wha
seraphim [82]

Answer:

\sum_{i=1}^n x_i =459

\sum_{i=1}^n y_i =1227

\sum_{i=1}^n x^2_i =24059

\sum_{i=1}^n y^2_i =168843

\sum_{i=1}^n x_i y_i =63544

With these we can find the sums:

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=24059-\frac{459^2}{9}=650

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}=63544-\frac{459*1227}{9}=967

And the slope would be:

m=\frac{967}{650}=1.488

Nowe we can find the means for x and y like this:

\bar x= \frac{\sum x_i}{n}=\frac{459}{9}=51

\bar y= \frac{\sum y_i}{n}=\frac{1227}{9}=136.33

And we can find the intercept using this:

b=\bar y -m \bar x=136.33-(1.488*51)=60.442

So the line would be given by:

y=1.488 x +60.442

And then the best predicted value of y for x = 41 is:

y=1.488*41 +60.442 =121.45

Step-by-step explanation:

For this case we assume the following dataset given:

x: 38,41,45,48,51,53,57,61,65

y: 116,120,123,131,142,145,148,150,152

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

So we can find the sums like this:

\sum_{i=1}^n x_i =459

\sum_{i=1}^n y_i =1227

\sum_{i=1}^n x^2_i =24059

\sum_{i=1}^n y^2_i =168843

\sum_{i=1}^n x_i y_i =63544

With these we can find the sums:

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=24059-\frac{459^2}{9}=650

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}=63544-\frac{459*1227}{9}=967

And the slope would be:

m=\frac{967}{650}=1.488

Nowe we can find the means for x and y like this:

\bar x= \frac{\sum x_i}{n}=\frac{459}{9}=51

\bar y= \frac{\sum y_i}{n}=\frac{1227}{9}=136.33

And we can find the intercept using this:

b=\bar y -m \bar x=136.33-(1.488*51)=60.442

So the line would be given by:

y=1.488 x +60.442

And then the best predicted value of y for x = 41 is:

y=1.488*41 +60.442 =121.45

3 0
3 years ago
Use the quadratic formula to solve for x. <br> 5x²-3x=3<br> Round to the nearest 100th
Semenov [28]

Answer: -0.530662 or 1.13066

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • An equilateral triangle LMQ is drawn
    10·1 answer
  • "jill charges an hourly rate for babysitting one or two children. kara charges a lower hourly
    5·1 answer
  • Between what two consecutive integers is 187
    11·1 answer
  • Solve for x.. 3(x-8) = 29.7
    11·2 answers
  • I need help please!!!
    8·1 answer
  • I need help on this!<br> 20 points! (I have been working for hours)
    15·1 answer
  • How do I find the answer to this? I’m struggling.
    14·1 answer
  • 16 is the geometric mean of 8 and what other number?
    11·1 answer
  • Describe the transformation from the graph of f(x) =ax^2 to the graph of g(x) = a(x-h)^2+k
    11·1 answer
  • What are the step to the Quadratic Formula?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!