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
adoni [48]
3 years ago
15

Eudora ran from her home to her secret laboratory at an average speed of 12 km/h. Then she then took one of her jetpacks and fle

w to her school at an average speed of 76 km/h. Eudora traveled a total distance of 120 kilometers, and the entire trip took 2 hours.
Mathematics
2 answers:
REY [17]3 years ago
8 0

Answer:

60 km/h

Step-by-step explanation:

Eudora ran from her home to her secret laboratory at an average speed of 12 km/h.

Then she flew to her school at an average speed of 76 km/h.

Total distance traveled by Eudora = 120 kilometers

Time taken in entire trip = 2 hours

We will calculate the average speed of Eudora.

Speed = \frac{Distance}{Time}

           =  \frac{120}{2}

           = 60 km/h

Eudora's average speed for entire trip was 60 kilometers her hour.

mylen [45]3 years ago
3 0
Her average speed = total distance / time taken = 120 / 2 = 60 km/h.
You might be interested in
A customer buys 12.42 in merchandise and gives cashier a ten dollar bill a five dollar bill a dime a nickel and two pennies her
Arturiano [62]
She gets $2.75 back if that’s what you’re asking.
4 0
3 years ago
Can any of you guys help my cousin with her homework its very confusing to me I'm not very good at math so please help her she g
dangina [55]
Simplify 5/15: the numerator and denominator are both multiples of 5, so the fraction can be reduced to 1/3 by dividing the top & bottom by 5. 5/15 of a rectangle is the same as 1/3 of a rectangle.

Compare 1/2 and 5/7:
The simplest way is to ask if 5/7 is more than one half. Half of 7 is 3.5, and 5 is greater than 3.5, so 1/2 < 5/7.
The way that is a little more work is to get a common denominator and make equivalent fractions of 7/14 and 10/14.

Fraction to decimal of 4/5. 4 divided by 5 = 0.8

Decimal to fraction, 0.78:
0.78 = 78 hundredths = 78/100 as a fraction. They usually want fractions in the lowest terms, so divide the numerator and denominator by two, and you have 39/50.

Mixed to improper fraction 5 2/9: multiply the denominator of 9 times the whole number of 5, that equals 45. Add the 2 in the numerator, that is 47. Keep that over 9, because we are trying to figure out how many ninths we have. 5 2/9 = 47/9

Add ‘em 3/5 + 1/2:
Make equivalent fractions with a common denominator. (10 is the least/lowest common denominator). So we are adding 6/10 + 5/10 = 11/10 or 1 1/10.

Improper to mixed, 9/4:
We have 9 fourths. 4 fourths = 1 whole. So we get 2 wholes with 1/4 left over. 9/4 = 2 1/4.

Subtract ‘em, 3/10 - 1/5.
Again, need a common denominator/equivalent fraction. 1/5 = 2/10
3/10 - 2/10 = 1/10

Draw it, 1/3:
The circle is already divided into thirds. Shade one of them in.

Multiply ‘em 2/3 x 5:
Multiply the numerator times the whole number, leave the denominator alone. 2/3 x 5 = 10/3 = 3 1/3 if they want it converted to a mixed number.

Divide ‘em: 8/9 divided by 3 is 8/27

What’s the word?
4 x 1/2 = 2 (what is one half of 4?)

Word up:
3/5 divided by 3 = 1/5

Your grade? 14/14 = 100%

Please let me know if you have questions. Please mark brainliest if you can :) Thank you!
4 0
3 years ago
What assumption have you made in answering part b​
emmasim [6.3K]

You're assuming that this data set represents all of Mrs. Hassaan's pupils. Certain students could be missing from the histogram - for instance, there could be one or two students who missed the test, but for certain reasons will be taking a make-up exam. Their grade would not be recording in this data set, but they still contribute to the class size, and so would be unaccounted for here.

4 0
2 years ago
Which is about 1 cm long?
Sedaia [141]
The answer, from my own personal experience, is a raisin. Hope this helps!
8 0
3 years ago
Read 2 more answers
A survey of 85 families showed that 36 owned at least one DVD player. Find the 99% confidence interval estimate of the true prop
Katyanochek1 [597]

Answer:   (0.367,\ 0.473)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

, where \hat{p} is the sample proportion, n is the sample size , z_{\alpha/2} is the critical z-value.

Given : Significance level : \alpha:1-0.99=0.01

Sample size : n= 85

Critical value : z_{\alpha/2}=2.576

Sample proportion: \hat{p}=\dfrac{36}{85}\approx0.42

Now, the  99% confidence level will be :

\hat{p}\pmz_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\=0.42\pm(2.576)\sqrt{\dfrac{0.42(1-0.42)}{85}}\\\\\approx0.42\pm0.053\\\\=(0.42-0.053,\ 0.42+0.053)=(0.367,\ 0.473)

Hence, the  99% confidence interval estimate of the true proportion of families who own at least one DVD player is  (0.367,\ 0.473)

3 0
2 years ago
Other questions:
  • Let |x| + |y| = c where, c is s real number. Determine the number of points that would be on the graph of the equation for each
    10·1 answer
  • The temperature in degrees Celsius can be expressed by the function C(f)=59(f−32)C(f)=59(f−32) where f is the temperature in deg
    7·1 answer
  • What is the gcf for 28 and 70
    10·1 answer
  • Michael picks three different digits from the set { } 12345 ,,,, and forms a mixed number by placing the digits in the spaces of
    10·1 answer
  • Can someone please give me the correct answer.
    10·1 answer
  • A golfer takes a swing from a hill twenty feet above the cup with an initial upwards velocity of 76 feet per second. How long do
    11·1 answer
  • Sort the equations into the correct categories based on the slope of the line.
    13·1 answer
  • Which equation represents a linear function?
    15·1 answer
  • Question 1
    7·1 answer
  • Solve For x <br><br><img src="https://tex.z-dn.net/?f=%20%5Clarge%20%5Cfrak%7B5x%20%2B%2015%20%3D%2030%7D" id="TexFormula1" titl
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!