3 years ago

GEOMETRY PEOPLE HELP MEEEEEEE

Mathematics

2 answers:

Jlenok [28]3 years ago

5 0

The answer to that question is the letter B

Svetradugi [14.3K]3 years ago

4 0

Answer:

yo i think we got to the same school LOL

Step-by-step explanation:

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tatyana61 [14]

$n^2+n\\\\check:\\\\a_1=1^2+1=2\\a_2=2^2+2=6\\a_3=3^2+3=12\\a_4=4^2+4=20$

6 0

3 years ago

Find the area of the shaded region in square units. Show your reasoning.

motikmotik

Answer:

40 square units

Step-by-step explanation:

First of all, lets say that square has side $l$ , so, the area unit is $l^2$

the diagonal's square is $l\sqrt{2}$

CALCULATION OF TRIANGLES'S AREA (there are 4 triangles)

$A_{triangles}=4*base*heigh*0.5=2*(l\sqrt{2} )(2l\sqrt{2} )=8l^2$

CALCULATION OF MAIN SQUARE AREA

$A_{square}=side*side=(4\sqrt{2} l)(4\sqrt{2} l)=32l^2$

TOTAL AREA

$A_{total}=A_{triangles}+A_{square}=8l^2+32l^2=40l^2$

3 0

3 years ago

Find the value of k: 7k÷3=21

Free_Kalibri [48]

The answer is 9. 7 times 9 is 63 and then 63 divided by 3 is 9.

3 0

2 years ago

Read 2 more answers

Solve the rational equation (3x^2+1)/(x-1) + x =4 + 4/(x-1)

natita [175]

Answer:

The answer to your question is letter D

Step-by-step explanation:

Rational equation

$\frac{3x^{2} + 1}{x - 1} + x = 4 + \frac{4}{x - 1}$

Simplify

$\frac{3x^{2} + 1 + x(x - 1)}{x - 1} = \frac{4(x - 1) + 4}{x - 1}$

Cancel the denominators and expand

3x² + 1 + x² - x = 4x - 4 + 4

Simplify

4x² - x + 1 - 4x = 0

4x² - 5x + 1 = 0

Factor

4x² - 4x - 1x + 1 = 0

4x(x - 1) - 1(x - 1) = 0

(4x - 1)(x - 1) = 0

x₁ = 1/4 x₂ = 1

4 0

3 years ago

If you want to buy an item in a store that costs $50 and is on sale for 10% off, then how much would the item actually cost you

SCORPION-xisa [38]

Answer: The item would be 45 dollars.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers