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2 years ago

How many triangles do you see? If you get it right, you get brainliest!

Mathematics

2 answers:

Rashid [163]2 years ago

5 0

Answer:

23 triangles

Step-by-step explanation:

forsale [732]2 years ago

5 0

Answer:

27 triangles

Step-by-step explanation:

triangle given by $\frac{n(n+2)(2n+1)}{8}$ , where n is the amount of triangles on the base

4(6)(9)/8 = 216/8 = 27

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Write the monomial in standard form. name it's coefficient and identify its degree.

Hunter-Best [27]

Answer:

$Standard\ Form = {3n^2} m^{-2}$

Step-by-step explanation:

Given

$\frac{2}{3m^2n} * 4.5n^3$

Required

Write in Standard Form

To start with; the two monomials have to be multiplied together;

$\frac{2}{3m^2n} * 4.5n^3$

$Standard\ Form = \frac{2 * 4.5n^3}{3m^2n}$

Split the numerator and the denominator

$Standard\ Form = \frac{2 * 4.5 * n^3}{3 * m^2 * n}$

Multiply Like terms

$Standard\ Form = \frac{9 * n^3}{3 * m^2 * n}$

Divide 9 by 3 to give 3

$Standard\ Form = \frac{3 * n^3}{m^2 * n}$

Divide n³ by n to n²

$Standard\ Form = \frac{3 * n^2}{m^2 }$

Split fraction

$Standard\ Form = {3 * n^2} * \frac{1}{m^2 }$

From laws of indices;

$\frac{1}{a^n} = a^{-n}$

$Standard\ Form = {3 * n^2} * \frac{1}{m^2 }$ becomes

$Standard\ Form = {3 * n^2} * m^{-2}$

Multiply all together

$Standard\ Form = {3n^2} m^{-2}$

5 0

2 years ago

Someone help me questions 9 and 10 I’ll appreciate!

Eddi Din [679]

Answer:

i can help with 9 but not 10 so here you go

Step-by-step explanation:

12+12=24

12÷2=6

6+6=12

24+12=36

12x6=72

length=12

area=72

hope i helped have a great day(or night)!!

7 0

1 year ago

Read 2 more answers

There are three marbles in a bag. One is red and two are black. What is the probability of picking a black marble first, putting

Maru [420]

Answer:

well for me I think

Step-by-step explanation:

2/3×2/3

4/9

since they are replacing the black marbles back

6 0

2 years ago

HELP PLEASE!!!! Jerome has 15 albums with 7 baseball cards in each. His friend gives him 8 packages of baseball cards with 13 in

hichkok12 [17]

albums: 15*7 = 105 cards

packages : 8*13 = 104 cards

extra cards 10

total cards =albums+ packages + extra cards

= 105+ 104 + 10

219 cards

4 0

3 years ago

Read 2 more answers

Find the image of (2,-7) after a reflection over the x-axis

asambeis [7]

Answer: (2, 7)

Step-by-step explanation:

To reflect something over the x-axis, simply invert the y value. Simply turn -7 into 7.

Hope it helps <3 :)

3 0

2 years ago