3 years ago

Each side length of a triangle is 4 cm. What type of triangle is it?

Mathematics

1 answer:

KIM [24]3 years ago

3 0

Equilateral, because the sides are equal

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Approximately how many meters are equal too 11.4 ft

irina [24]

Approximately 3.47 meters is equal to 11.4 feet

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3 years ago

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Answer the following questions about the sphere whose equation is given by x2+y2+z2−8x+4y=−4. 1. Find the radius of the sphere.

Anna [14]

Answer:

we have (a,b,c)=(4,-2,0) and R=4 (radius)

Step-by-step explanation:

since

x²+y²+z²−8x+4y=−4

we have to complete the squares to finish with a equation of the form

(x-a)²+(y-b)²+(z-c)²=R²

that is the equation of a sphere of radius R and centre in (a,b,c)

thus

x²+y²+z²−8x+4y=−4

x²+y²+z²−8x+4y +4 = 0

x²+y²+z²−8x+4y +4 +16-16 =0

(x²−8x + 16) + (y² + 4y + 4 ) + (z²) -16 = 0

(x-4)² + (y+2)² + z² = 16

(x-4)² + (y-(-2))² + (z-0)² = 4²

thus we have a=4 , b= -2 , c= 0 and R=4

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3 years ago

. You got 46 out of 65 questions right on your exam. What's your grade?

larisa86 [58]

Answer:

about like 8 /10

Step-by-step explanation:

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The surface area of a cube is 560,000 square centimeters. How many square meters is this?

tresset_1 [31]

Answer:

5,600 m^2

Step-by-step explanation:

a 1cm= 0.01m

560000(0.01)=5600

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3 years ago

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Which inequality is true when the value of R is 18? I'ma shower the answers i can choose in the picture

musickatia [10]

Answer:

See below:

Step-by-step explanation:

Hello! We can check to see if the inequality is true by replacing r with 18 as we have been told to find them in which 18 as r makes the equation true.

So our equations to test for are:

$-r-3>-6\\-r+3$

We can input 18 as r and then we see the following are correct:

1. No, as a -21 is not greater than -6

2. Yes, as -15 is less than 6.

3. No, as 21 is not greater than 6

4. No, as -15 is not greater than 6.

Cheers!

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3 years ago