answer.
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
zloy xaker [14]
2 years ago
15

8. Number of boys in a class is twice the number of girls. 20% of the girls are brunettes and of the rest – half are blondes: Ma

ry, Clara, Gina and Trisha. How many boys study in this class?
Mathematics
1 answer:
slega [8]2 years ago
8 0

Answer:

<em>20 boys </em>

Step-by-step explanation:

b = 2g

100% - 20% = 80%

80% ÷ 2 = 40% = 0.4

0.4g = 4 ⇒ g = 4 ÷ 0.4 = 10

b = 2 × 10 = 20

There are 10girls and <em>20 boys</em> study in the class.

You might be interested in
A maximum can occur at the each of the following except
Vlad [161]

Answer:

im pretty sure its B correct me if im wrong

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Given: Quadrilateral ABCD is a kite.
Leni [432]

Answer:


Step-by-step explanation:

One

The definition of a kite.

Two

Perpendicular. The diagonals meet at right angles

Three

I don't know if the term is still used, but when I first learned this material (many years ago) we called it the reflexive property.

Four

You found out that <AED = <CED which established that both are right angles. The problem is, you do not have enough information to prove SAS.

AAS is never a dependable reason for proving anything conguent.

HL is really your only choice.

8 0
2 years ago
Read 2 more answers
Find the volume of the cone.
frez [133]

Find the volume of a cone with a diameter of 20m and a slant height of 26m.

Volume Formula of a Cone: V = pi(radius^2)(h/3)

Diameter: 20m

Slant Height (Height): 26m

Plug it in:

V = 3.14(10^2)(26/3)

V = 314(26/3)

Solve:

V = 314(0.87)

V = 273.18

Volume = 273.18

Round:

Volume = 273m^3

The volume of the cone is 273m^3 to the nearest whole number.

7 0
2 years ago
Given: circle O with tangent AB mBC= 2x -16; mCD = x+40; mDE = x; mEB = 60 <br><br>find the x
murzikaleks [220]

Answer:

69

Step-by-step explanation:

All the given arcs cover the entire circle circumference, so their measures add up to a full 360.

(2x - 16) + (x + 40) + x + 60 = 360

4x + 84 = 360

4x = 276

x = 69

6 0
2 years ago
Which division expression is equivalent to 4 and one-third divided by Negative StartFraction 5 over 6 EndFraction? StartFraction
Kruka [31]

Answer:

  \dfrac{\left(\dfrac{13}{3}\right)}{\left(-\dfrac{5}{6}\right)}

Step-by-step explanation:

The first step is to convert the mixed number to an improper fraction.

  \dfrac{4\frac{1}{3}}{\left(-\dfrac{5}{6}\right)}=\boxed{\dfrac{\left(\dfrac{13}{3}\right)}{\left(-\dfrac{5}{6}\right)}}

6 0
2 years ago
Read 2 more answers
Other questions:
  • Solve the Quadratic Equation by factoring. 3r^2-16r-7=5
    5·1 answer
  • Arlene is testing whether school is more enjoyable when students are making high grades. She asked 100 students if they enjoyed
    11·1 answer
  • Mr. Wilson is giving his students a vocabulary test tomorrow over all the terms they have learned from this semester. Today, he
    8·1 answer
  • A submarine was 144 feet below sea level. A shark was hovering at a constant depth above the submarine. The submarine’s depth wa
    11·2 answers
  • An arc on a circle measures 250°. Within which range is the radian measure of the central angle? 0 to StartFraction pi Over 2 En
    9·2 answers
  • a manufacturer of cat toys produces three different toys filled with catnip the toys are the shape of a cone cylinder sphere eac
    5·1 answer
  • Geoffrey is evaluating the expression StartFraction (negative 3) cubed (2 Superscript 6 Baseline) Over (Negative 3) Superscript
    15·2 answers
  • For what value of the variable will<br> b<br> the value of 3−5c be 1 less than the value of 1−c?
    14·1 answer
  • Eighteen 2.5 gallon buckets are needed to fill a cistern with water. Find the constant of variation. Please help! Thank you!
    13·2 answers
  • If a certain number of Grade IV students share 28 or 39 skill books in Mathematics,there are remainders of 4 and 3 books. What i
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!