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
OLEGan [10]
4 years ago
7

Help!!!please:((( I don’t understand

Mathematics
2 answers:
monitta4 years ago
6 0
There are 12 items that are both red and small (bottom right corner)
This is out of 17+3+8+12 = 40 items total

Divide the smaller over the larger. Reduce.
12/40 = (4*3)/(4*10) = 3/10

The answer as a fraction is 3/10

note: Any fraction with a probability will always have the smaller number up top. The largest a probability can get is 1
puteri [66]4 years ago
4 0
Find the probability of Red/small.

Red = large + small
large = 8
Small = 12
Plug in 8 for large, and 12 for small
Red = 8 + 12
Red = 20
Now we know that the total red = 20

Do the same with small

3 small blue
12 small red

Small = blue + red
Small = 3 + 12
Small = 15

Note that red is first then small. Put red over small
Remember that red = 20, small = 15

20/15 is the fraction you need.

However, note that it says "reduce your answer" at the bottom

Divide 5 from numerator and denominator

(20/15)/(5/5) = 4/3

4/3 is your answer

hope this helps


You might be interested in
A student answered 86 problems on a test correctly and received a grade 78%, how many problems were on the test, if all the prob
malfutka [58]
86:x=78:100
78x=8600
x=110

8 0
3 years ago
How to calculate surface area​
Andrej [43]

9514 1404 393

Explanation:

Divide the figure into areas for which you have a surface area formula. Use the appropriate formula for each area, then add up the results.

Formulas are available for surface areas of a cone, cylinder, sphere, pyramid, rectangular prism, and for plane shapes that are circles, ellipses, triangles, rectangles, trapezoids, and regular polygons.

Most of the figures for which you are asked to find the area will decompose to some subset of these shapes. Take care to identify the relevant dimensions of each of the constituent parts of the area, and to make sure that all parts are accounted for. Do not allow your parts of the area to overlap, unless you intend to account for that overlap by subtracting the area that is counted more than once.

Also, use your common sense. A semicircle will have half the area of a circle, for example.

In some cases, it may be expedient to compute the area of a larger figure than the one you have, then subtract the part of that area that is missing from your figure.

5 0
3 years ago
Please solve R-7=1 ?
enyata [817]

Answer:

r=8

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Use substitution to determine which of the following values for y are in the solution set of the inequality:
aleksandrvk [35]

Answer:

y = 30 and y = 40

Step-by-step explanation:

All you have to do is add 10 and 12, and see if its is greater than 34. Add the rest of the listed numbers to 12.

5 0
3 years ago
Read 2 more answers
How to calculate standard deviation sample?
Harman [31]
Formula for standard deviation sample calculation is:
SD = sqrt (( ∑( x - m)²) / ( n - 1 )),
where x stays for each value in the data set, m stays for mean of all values in the data set, and n stays for the number of values in the data set.
For example: Find the sample standard deviation for the set of numbers: 10, 11, 11, 12, 12.
First we will find mean of all avlues: m = ( 10 + 11 + 11 + 12 +12 ) / 5 = 11.2
SD = sqrt (( 1.2² + 0.2² + 0.2² + 0.8² + 0.8² ) / ( 5 - 1 ))=
= sqrt ( 2.8 / 4 ) = √0.7 = 0.837
7 0
4 years ago
Other questions:
  • What is x?<br><br> 4(x - 4) + 65 = -3x
    12·1 answer
  • PLS HELP ASAP 1st answer will be brainliest, make sure your correct
    13·1 answer
  • What multiplacated by something equals 224
    6·2 answers
  • I need help to get good grade
    11·1 answer
  • Tim needs a new car while he attends college in the United States for the next three years. The car he would like has a MSRP of
    12·2 answers
  • Please help me, I dont understand!
    11·1 answer
  • The highest point on Earth is Mount Everest, which is 9,348 meters above sea level. The lowest point is the Dead Sea
    11·1 answer
  • How do I solve this and what are the rules to solving this
    14·1 answer
  • Store B sells the same computer as in the Example for $1,300. Store B offers a 20% discount on the computer. The tax rate is the
    13·1 answer
  • the cowboys football team started at the zero yard line.throughout the course of the first quarter the team gained 7 yards, lost
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!