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
gavmur [86]
2 years ago
10

Merry christmas! my teachers gave me work. ill be happy if u help

Mathematics
1 answer:
Sauron [17]2 years ago
4 0
Heyy merry christmas !
area of a triangle = base * height : 2
4 * 5 = 20 : 2 = 10
10 * 12triangles = 120cm^3
You might be interested in
Find all of the missing angles of sides of the triangle below. Note that side lengths are in centimeters. Show and/or explain yo
FromTheMoon [43]

Answer:

c=19.21

<C=90

<B=38.66°

<A=51.34

Step-by-step explanation:

12²+15²=c²

144+225=c²

c=19.21

<C=90

For angle B, the sinB=Opposite over Hypotenuse

sinB=12/19.21

sinB=0.62467

B=sin^-1(0.62467)

<B=38.66°

To find A, 180-90-38.66

<A=51.34

7 0
3 years ago
II<br>3<br>Find 6 X 915. Show your work.​
love history [14]

Answer:

5490

Step-by-step explanation:

you multiply every number by 6 and you will get the answer

4 0
3 years ago
Factor the expression 3x? - 75 completely. (select one answer)
AysviL [449]
Should be the 3rd one
5 0
3 years ago
Solve the simultaneous equation y-2x+1=0 and 4x^2+3y^2-2xy=7
Lapatulllka [165]

The first equation is y-2x+1=0

y=2x-1 (Equation 1)

The second equation is 4x^{2}+3y^{2}-2xy=7 (Equation 2)

Putting the value of x from equation 1 in equation 2.

we get,

4x^{2}+3(2x-1)^{2}-2x(2x-1)=7

4x^{2}+3(4x^{2}+1-4x)-4x^{2}+2x=7

by simplifying the given equation,

12x^{2}-10x-4=0

6x^{2}-5x-2=0

Using discriminant formula,

D=b^{2}-4ac

D=25-4 \times 6 \times -2 = 73

Now the formula for solution 'x' of quadratic equation is given by:

x=\frac{-b+\sqrt{D}}{2a}  and  x=\frac{-b-\sqrt{D}}{2a}

x=\frac{5+\sqrt{73}}{12}  and x=\frac{5-\sqrt{73}}{12}

Hence, these are the required solutions.

8 0
3 years ago
Min knows that Pi times r = 9.42 centimeters. What would she need to do to find the area?
Alinara [238K]

Answer:

The area of the circle is 28.26.

Step-by-step explanation:

πr =9.42

Using that, we can find the radius, which will help us find the area of the circle.

9.42/π = 3 (I used 3.14 for π)

The formula for area of a circle is:

πr^2

Plug our values in.

π(3^2)

9π

28.26

The area of the circle is 28.26.

To sum, Min would need to first figure out the radius of the circle, and then use the radius to find the area of the circle. She can figure out the radius by dividing 9.42 by π, and find the area with the formula πr^2.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Craig has a building block in the shape of a rectangular pyramid. A net of which is shown below.
    7·1 answer
  • In 2012, five U.S postal stamps cost $2.20. how much did seven stamps cost? answer please
    14·2 answers
  • the perimeter of a rectangle is84cm and its length is 6cm longer than its breadth.find the lenth and breadth of the rectangle​
    11·2 answers
  • Karina multiplied 62×22 and found a product of 1040 to explain my Karina the answer is not reasonable
    15·2 answers
  • Any help is appreciated!!
    8·1 answer
  • Which expression is equivalent to 7(4+7)? *
    9·2 answers
  • A bookshelf is 9 feet wide. A set of mystery books fills 1/6 of the shelf space. Each book in the set is 3/8 inch thick. How man
    10·1 answer
  • Plz Help me!!!<br> will mark brainliest!!
    8·1 answer
  • (c) Which functions have graphs with slopes less than -2?<br> (Check all that apply.)
    6·1 answer
  • In which quadrant is the point (2, -3) located?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!