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4 years ago

7

Which is bigger 0.78 or 0.875

1 answer:

Law Incorporation [45]4 years ago

7 0

0.875 is because the first digit that is different is in the tenths place and the 8 in 0.875 is larger in value than the 7 in 0.78

Hope this helps :)

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irina [24]

Isisbwauuqnqbqnjajsjsujss

6 0

3 years ago

Dada la ecuacion 25x2 + 4y2 = 100, determina las coordenadas de los vertices, focos, las longitudes de los respectivos ejes mayo

Likurg_2 [28]

Answer:

The given equation is

$25x^{2} +4y^{2}=100$

Which represents an elipse.

To find its elements, we need to divide the equation by 100

$\frac{25x^{2} +4y^{2} }{100} =\frac{100}{100} \\\frac{x^{2} }{4} +\frac{y^{2} }{25} =1$

Where $a^{2} =25$ and $b^{2}=4$ . Remember that the greatest denominator is $a$ , and the least is $b$ . So, we extract the square root on each equation.

$a=5$ and $b=2$ .

In a elipse, we have a major axis and a minor axis. In this case, the major axis is vertical and the minor axis is horizontal, that means this is a vertical elipse.

The length of the major axis is $2a=2(5)=10$ .

The length of the minor axis is $2b=2(2)=4$ .

The vertices are $(0,5);(0,-5)$ and $(2,0);(-2,0)$ .

Now, the main parameters of an elipse are related by

$a^{2}=b^{2} +c^{2}$ , which we are gonna use to find $c$ , the parameter of the focus.

$c=\sqrt{a^{2}-b^{2} }=\sqrt{25-4}=\sqrt{21}$

So, the coordinates of each focus are $(0,\sqrt{21})$ and $(0,-\sqrt{21})$

The eccentricity of a elipse is defined

$e=\frac{c}{a}=\frac{\sqrt{21} }{5} \approx 0.92$

The latus rectum is defined

$L=\frac{2b^{2} }{a}=\frac{2(4)}{5} =\frac{8}{5} \approx 1.6$

Finally, the graph of the elipse is attached.

7 0

3 years ago

Need help with this question no links please

RUDIKE [14]

Answer:

area of arrow=610cm²

Step-by-step

First find the area of the square then the are of the triangle then add together to get the area of the arrow.

1.

Area=length x width

=20cm x 15cm

=300cm²

2.

Area= 1/2 base x height

=1/2 x 20 x 31

=1 x 10 x 31

=310cm²

(NOTE: TO FIND THE BASE YOU ADD THE 15CM FROM THE SQUARE AND THE 2 EIGHT'S FROM THE BOTTOM OF THE TRIANGLE)

3.

Total area or area of arrow

=300cm²+310cm²

=610cm²

6 0

3 years ago

You are asked to find the space occupied by the shape below. Will you calculate its area or volume? A cube shape. area volume

Debora [2.8K]

Answer:

volume

Step-by-step explanation:

the amount of space enclosed by an object or shape, how much 3-dimensional space

6 0

3 years ago

Please help what is the area and the perimeter of these two shapes????

34kurt

Answer:

Pink:

A. 87 m²

P. 50 m

Yellow:

A. 132 m²

P. 76 m

Step-by-step explanation:

You can cut the shapes up to find the area.

Pink Figure: (not cut up)

A.

(13×7)-(4×1)=

91-4=

87 m²

P.

(1+1+4+4)+(7+13+7+13)=

10+40=

50 m

Yellow Figure:

A.

(14×4.5)+((14-9-3)×3)+((12-4.5-3)×14)=

(14×4.5)+(2×3)+(4.5×14)=

63+6+63=

132 m²

P.

14+4.5+3+3+3+4.5+14+4.5+9+3+9+4.5=

76 m

4 0

3 years ago