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yan [13]
3 years ago
7

What is the distance between point A(2,9) and B(-2,6)

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
6 0

Answer:

The distance among those points is 5 units

Step-by-step explanation:

See the picture please

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Earth's radius is approximately 6400 km. What is the surface area & volume of the earth?
Tamiku [17]

Answer:

SA=514,457,600\ km^{2}

V=1,097,509,546,667\ km^{3}

Step-by-step explanation:

step 1

Find the surface area

we know that

the surface area of a sphere is equal to

SA=4\pi r^{2}

substitute

SA=4 \pi (6,400)^{2}

SA=163,840,000 \pi\ km^{2}

substitute the approximate value of pi (3.14)

SA=(3.14) (163,840,000)

SA=514,457,600\ km^{2}

step 2

Find the volume

The volume is equal to

V=(4/3)\pi r^{3}

substitute

V=(4/3)(3.14) (6,400)^{3}

V=1,097,509,546,667\ km^{3}

8 0
3 years ago
Read 2 more answers
Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. 5x+7=2y and
Luda [366]

Answer:

The correct option is option B. It has one solution, and it's x=-3

Step-by-step explanation:

We have the following system of equations:

5x+7 = 2y                        (1)

y-9x=23                            (2)

Step 1: Solve for 'y' in equation (2):

y-9x = 23

y = 9x + 23

Step 2: Substitute in equation (1):

5x + 7 = 2y

5x + 7 = 2(9x + 23)

5x + 7 = 18x + 46

Step 3: Solve for x:

7 - 46 = 18x - 5x

-39 = 13x

x= -3

So the correct option is option B. It has one solution, and it's x=-3

7 0
3 years ago
Read 2 more answers
Logan can make $50 per pool to clean pools during the summer to earn money. He did, however, need to
babunello [35]

Answer:

Step-by-step explanation:

y = 50x - 165

7 0
2 years ago
If a solid has faces that consist of 2 equilateral triangles and 3 congruent rectangles, what type of solid is it?
Burka [1]
A right triangular prism is a solid that has faces that consist of 2 equilateral triangles and 3 congruent rectangles. It is also described to have two parallel faces, and 3 other faces that belong to the same place (and are not parallel to the parallel pair of faces).
7 0
3 years ago
I picked the yellow one, was I correct?
nikitadnepr [17]

Answer:

the answer was 9 (red)

Step-by-step explanation:

5 0
3 years ago
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