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
ANEK [815]
3 years ago
14

the track at east side high school is 440 yards long it took maya 10 min to jog around the track 4 times. find her speed in mile

s per hour.
Mathematics
2 answers:
SashulF [63]3 years ago
7 0
Her speed i think is 40 miles per hour

Pani-rosa [81]3 years ago
4 0
The answer is 6 miles per hour
You might be interested in
Kate hiked 14 miles in 6 hours.<br> Which rate represents the number of miles traveled per hour?
irinina [24]

Answer:

Step-by-step explanation:

To answer this, look at the form of the answer. they want miles per hour. So, just do that calculation

She traveled 14 miles in 6 hours.

14 miles/6 hours

14/6 = 7/3 = 2.3333 miles/hour

6 0
3 years ago
When solving inequalities with multiple operations, addition and subtraction are undone before multiplication and division.
nasty-shy [4]
True
In any equation multiplication and division should be done first.
3 0
3 years ago
If the coefficient of determination is 0.25 and the sum of squares residual is 180, then what is the value of SSY?
Gennadij [26K]

Answer:

And then SSY=SS_{total}=\sum_{j=1}^n (y_j-\bar y)^2 =240  

C. 240

Step-by-step explanation:

Previous concepts

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".  

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"  

When we conduct a multiple regression we want to know about the relationship between several independent or predictor variables and a dependent or criterion variable.

If we assume that we have k independent variables and we have  j=1,\dots,j individuals, we can define the following formulas of variation:  

SS_{total}=\sum_{j=1}^n (y_j-\bar y)^2  

SS_{regression}=SS_{model}=\sum_{j=1}^n (\hat y_{j}-\bar y)^2  

SS_{error}=\sum_{j=1}^n (y_{j}-\hat y_j)^2 =180  

And we have this property  

SST==SSY=SS_{regression}+SS_{error}=SSR+180

If we solve for SSR we got:

SSR= SSY-180    (1)

And we know that the determination coefficient is given by:

R^2 = \frac{SSR}{SSY}

We know the value os R^2= 0.25 and we can replace SSR in terms of SSY with the equation (1)  

R^2 =0.25= \frac{SSY-180}{SSY}= 1-\frac{180}{SSY}

And solving SSY we got:

\frac{180}{SSY}=1-0.25=0.75

SSY= \frac{180}{0.75}=240

And then SSY=SS_{total}=\sum_{j=1}^n (y_j-\bar y)^2 =240  

C. 240

7 0
3 years ago
A circle has diameter 12. What's the circumference?
Karo-lina-s [1.5K]

Answer:

b. 12π

Step-by-step explanation:

C= 2πr

R= D/2= 12/2= 6

C= 2x3.14x6

2x6= 12

C= 12π

6 0
3 years ago
Read 2 more answers
Any help? Much appreciated ​
natulia [17]

Answer:

\frac{6+\sqrt{27} }{4-\sqrt{3} } = \frac{r+s\sqrt{3} }{13} \\We\ may\ multiply\ the\ numerator\ and\ denominator\ with\ (4+\sqrt{3} ).\\Hence,\\\frac{(6+\sqrt{27})(4+\sqrt{3})  }{13} =  \frac{r+s\sqrt{3} }{13} \\Hence,\\24+6\sqrt{3} +4\sqrt{27} +9= r+s\sqrt{3}\\24+6\sqrt{3} +4*3\sqrt{3} } +9= r+s\sqrt{3}\\24+6\sqrt{3} +12\sqrt{3}+9 = r+s\sqrt{3}\\33+18\sqrt{3} = r+s\sqrt{3}\\Hence,\\r=33, s=18

5 0
3 years ago
Other questions:
  • 1.)There are 35 marbles in a bag:9 blue marbles, 8 marbles, 4 red marbles, 4 red marbles, 8 white marbles, &amp; 6 yellow marble
    7·1 answer
  • How do I find the rate of change?
    7·1 answer
  • 10 1/8+(3 6/8+2 7/8) what does it equals
    7·1 answer
  • Five and five six x 4/3
    13·1 answer
  • Below is a piece of a local pizza place menu where Jacob works.
    13·1 answer
  • -13+x=-25 what is the value of x
    8·2 answers
  • What is the product?
    13·1 answer
  • Find the distance of a line with endpoints (1, 2) and (7, 4). Round to the nearest tenth.
    6·1 answer
  • The ratio of girls to boys in the sixth grade is 2:5. If there are a TOTAL of 280 students in the sixth grade, how many of the s
    13·1 answer
  • Someone help please, this is due in 10 minutes and I dont know the answer.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!