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3 years ago

Help!will give brainliest

Mathematics

1 answer:

Fofino [41]3 years ago

7 0

Answer:

1 is true

2 is reflected over x axis

Step-by-step explanation:

graph them and you will see

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8x+2=13+10<br> I need help on this ‍♀️

Jet001 [13]

Answer:

x= 2.625

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

3 0

3 years ago

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An equilateral triangle has sides 8 units long. An equilateral triangle with sides 4 units long is cut off at the top, leaving a

Darina [25.2K]

Answer:

1:3

Step-by-step explanation:

Please study the diagram briefly to understand the concept.

First, we determine the height of the isosceles trapezoid using Pythagoras theorem.

$4^2=2^2+h^2\\h^2=16-4\\h^2=12\\h=\sqrt{12}\\ h=2\sqrt{3}$ units$

The two parallel sides of the trapezoid are 8 Inits and 4 units respectively.

Area of a trapezoid $=\dfrac12 (a+b)h$

Area of the trapezoid

$=\dfrac12 (8+4)*2\sqrt{3}\\=12\sqrt{3}$ Square Units$

For an equilateral triangle of side length s.

Area $=\dfrac{\sqrt{3}}{4}s^2$

Side Length of the smaller triangle, s= 4 Units

Therefore:

Area of the smaller triangle

$=\dfrac{\sqrt{3}}{4}*4^2\\=4\sqrt{3}$ Square units$

Therefore, the ratio of the area of the smaller triangle to the area of the trapezoid

$=4\sqrt{3}:12\sqrt{3}\\$Divide both sides by 4\sqrt{3}\\=1:3$

7 0

3 years ago

2x plus 3 plus x2; for x = 4

Alborosie

Answer:

2x+3+x2 if x=4 is 27

Step-by-step explanation:

2*x or 2*4=8

8+3=11;

and x or 4 times itself is 16

so we add it all together and get 27.

Have a great day!

4 0

3 years ago

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Which type of function best models the set of data points?<br>(0,11). (1,7), (2,7), (3,11). (4,19)

DENIUS [597]

wait I try it !! ,!!!!!!

5 0

4 years ago

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A torus is formed when a circle of radius2 centered at [3, 0] is revolved about the yaxis. Use the shell method to write an inte

kirza4 [7]

Answer:

y² + (x - 3)² = 4 is the equation.

Step-by-step explanation:

The equation of the said circle is

y² + (x - 3)² = 4

y = √[4 - (x - 3)²]

5 0

3 years ago