3 years ago

Are the two triangles similar? Explain you reasoning and support your answer?

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

4 0

Answer:

yes

Step-by-step explanation:

by the side and letgh

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Carson is training for a race. He ran 12.56 miles on one day and 12.98 miles the next day. How much farther did he run the secon

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Answer:

.42 miles more

Step-by-step explanation:

12.98 minus 12.56

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How many vertices does a cube have

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A cube has 8
A square has 4

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Abdul, while driving to school, computes the average speed for his trip to be 20 km/hr. On his return trip along the same route,

gulaghasi [49]

You need to find the total distance and the total time. The total distance is two times the distance to school, 2d.s=d/t=>t=d/sWhere s is speed, d is distance and t is time. So the time taken to get to school is:d/s1and the time taken to get back is:d/s2so the total time is:d/s1+d/s2=d(1/s1+1/s2)So, as speed = distance/time, divide the total distance by the total time:2d/d(1/s1+1/s2)=2/(1/s1+1/s2)=2/(1/20+1/40)=80/3≈26.7km/hr

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3 years ago

If a spherical ball is enlarged so that its surface area is 9 times greater than its original surface area, then the original ra

luda_lava [24]

The surface area of a sphere is $A = 4 \pi r^{2}$ and if the original S.A was is enlarged to have it 9 times greater, the radius would be multiplied by 3 or roughly 2.99626 rounded off to 3.0.

For example, let us assign values.
Let A=90

A= 90*9 = 810

$90 = 4 \pi r^{2} 

$ and $810 = 4 \pi r ^{2}$

the first r is 2.68 and the second r is 8.03

then, $\frac{8.03}{2.68} = 2.99626$ or rounded off to 3.

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3 years ago

Simplify (a+b)^3 + (a-b)^3 + 6a(a^2-b^2)

11111nata11111 [884]

Answer:

8a^3.

Step-by-step explanation:

(a+b)^3=a^3+b^3+3a^2b+3ab^2

(a-b)^3=a^3-b^3-3a^2b+3ab^2

(a+b)^3+(a-b)^3=2a^3+6ab^2

According to the question

(a+b)^3+(a-b)^3+6a(a^2-b^2)

Put in the value

=2a^3+6ab^2 +6a^3–6ab^2

=8a^3

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3 years ago