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3 years ago

PLEASE HELP!!! I don't know how to do this... (screenshots provided)

Mathematics

1 answer:

Mrac [35]3 years ago

4 0

Answer:

i really dont know how to do this and i dont think anybody here knows how to

Step-by-step explanation:

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If a car can travel 50 miles in 55 minutes, how long will it take to travel 75 miles?

tresset_1 [31]

So hes going 10 Miles in 11 minutes, so for 75 Miles it would be 82 and 30 Sec. I believe.

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3 years ago

A. 4.312 x 10 to the power of 2

son4ous [18]

Answer:

431.2

Step-by-step explanation:

hope this helps :3

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3 years ago

Read 2 more answers

writing and reasoning. write the number 34 and the number 43 as tens plus ones. how are they different?

defon

34 is 3 tens and 4 ones whereas 43 is 4 tens and 3 ones they are different because they have different values.

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3 years ago

Use the given information to answer the following questions. center (3, -9, 3), radius 5 (a) Find an equation of the sphere with

lianna [129]

Answer: The equation of the sphere with the center and radius

$x^{2} +y^{2} +z^{2}-6 x+18 y-6 z+74=0$

b) The intersection of this sphere with the y z-plane the x- co-ordinate

is zero(i.e., x = 0 )

Step-by-step explanation:

a) The equation of the sphere having center (h,k,l) and radius r is

$(x-h)^{2} +(y-k)^2+(z-l)^2 = r^2$

Given center of the sphere (3, -9, 3) and radius 5

$(x-3)^{2}+(y+9)^2+(z-3)^2 = 5^2$

on simplification , we get solution

$x^{2} -6 x+9+y^{2} +18 y+81+z^{2}-6 z+9=25$

$x^{2} +y^{2} +z^{2}-6 x+18 y-6 z+74=0$

Final answer :-

$x^{2} +y^{2} +z^{2}-6 x+18 y-6 z+74=0$

b) The intersection of this sphere with the y z-plane the x- co-ordinate

is zero(i.e., x = 0 )

$y^{2} +z^{2}+18 y-6 z+74=0$

7 0

3 years ago

Write an algebraic expression to represents the verbal expression: the difference between the product of 4 and a number and the

Naily [24]

Answer:

$4n-n^2$

Step-by-step explanation:

I use 'n' as the unknown value, but you can use any letter you want as the variable.

The product of four and a number would be represented by '4 * n'. The ideal way to write this would be '4n', even though '4 * n' is also correct in value.

The square of the number would be n². Squaring a number is multiplying a number by itself.

The phrase 'difference between...' means subtraction.

Putting it together:

"The difference between the product of 4 and a number and the square of the number" would be:

$4n-n^2$

Hope this helps.

4 0

3 years ago