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
erma4kov [3.2K]
3 years ago
9

Mario’s company makes unusually shaped imitation gemstones. One gemstone had 10 faces and 11 vertices. How many edges did the ge

mstone have?
Mathematics
1 answer:
saul85 [17]3 years ago
6 0
Euler formula: VERTICES + FACES - EDGES = 2

11+10 -E = 2

21-2 = E and E(edges) = 19
You might be interested in
The standard tip in a restaurant is 15% of the bill before tax. Many people in California find the tip by doubling the sales tax
cricket20 [7]
To answer this you could do a couple things. 1. Actually calculate both tips and then subtract them. Here is the math ( assuming it is $60, not 60% that you mean). a. 0.15 x 60 = $9. b. 0.0825 x 2 x 60=$9.90. c. 9.90-9.00= $0.90 difference.

The other strategy would be to find the difference on the percents and then multiply by $60. a. 8.25%x2=16.5%-15%. Difference of 1.5%. b. 0.015 x $60=$0.90.
3 0
3 years ago
20 points repost because no one answered. Geomertry question
aniked [119]

Answer:

x=2.25

Step-by-step explanation:

ΔABC and ΔADE are similar.

∴ sides are proportional.

\frac{5}{1} =\frac{x+9}{x} \\5=\frac{x}{x} +\frac{9}{x} \\5=1+\frac{9}{x}\\\frac{9}{x}=5-1\\\frac{9}{x}=4\\x=\frac{9}{4}=2.25

7 0
3 years ago
Read 2 more answers
Please help me answer!!!!
yulyashka [42]

Answer:

C

Step-by-step explanation:

It can be any combination from 2/3/5/8

7 0
3 years ago
Read 2 more answers
An online retailer sells two packages of protein bars.
krok68 [10]
In order to find the price per bar, we divide the price by the amount of bars.  For the first one:

15.37/10 = $1.54 per bar

The second package:

15.35/12 = $1.28 per bar.

The 10-pack costs $1.54 per bar and the 12-pack costs $1.28 per bar.  The 12-pack has the better price per bar.

Now, let's look at the price per ounce.  We do this in a similar way.  We find the total amount of ounces in the package, and divide the price by the number of ounces.

In the first package, we multiply 10*2.1=21.  We have 21 ounces in the first package.  Now we divide 15.37/21.  In the first package, we have 0.73 dollars per ounce.

Now, let's look at the second package.  We start by multiplying 1.4*12=16.8.  There are 16.8 ounces in the package.  Now, we divide 15.35/16.8=0.91.  So, in the second package, we have 0.91 dollars per ounce.

The cost per ounce of the 10-pack is $0.73 and the cost per ounce of the 12-pack is $0.91.  The first package has the better price per ounce.

The better explanation is the second one, because I prefer the lower price per ounce, I think that the 1st pack is the better buy.
5 0
3 years ago
Please help with the question below
lora16 [44]

Considering the unit circle, it is found that the sine is negative on the third and on the fourth quadrant.

<h3>What is the unit circle?</h3>

For an angle \theta the unit circle is a circle with radius 1 containing the following set of points: (\cos{\theta}, \sin{\theta}).

Hence, from the above explanation, the sine is negative when y is negativem, which is on the third and on the fourth quadrant.

More can be learned about the unit circle at brainly.com/question/16852127

#SPJ1

4 0
1 year ago
Other questions:
  • Use substitution to solve the linear system of equations.
    10·1 answer
  • What is 0.46 in algebraic fraction form
    6·1 answer
  • Freesia walks 12 miles in 4 hours. At this rate, how many miles does she walk in 7 hours?
    15·1 answer
  • If you receive a monthly payment of $1500, will you have enough money to pay for the following items: Rent: $750, Cable &amp; In
    13·1 answer
  • If one measurement of a golden rectangle is 10.4 inches, which number could be the other measurement?
    15·1 answer
  • Can You Please Help Me ​
    14·2 answers
  • Joshua went to the hardware store and bought 4 yellow ropes. The total
    6·1 answer
  • What’s the measure of angel B
    15·1 answer
  • What is an equation of a line that passes through the points (1,8) and (-1, -2)
    9·1 answer
  • PLEASE NEED HELP NOW!!!!!!!❤️
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!