All categories

2 years ago

3.Which of the following is not a plane figure?

Mathematics

1 answer:

Galina-37 [17]2 years ago

6 0

Answer:

I'm not sure about the other ones but I'm pretty sure 4 is cube

You might be interested in

Find the factors for each of the following 40, 21

Nadya [2.5K]

21:2,1,3

40:2,4,5,8,10,20

5 0

3 years ago

A man can paint one house in 12 hours. At this rate, how many houses could 18 men paint in 6 hours? A) 3 houses B) 6 houses C) 9

Mademuasel [1]

Answer:

The correct option is C. 9 houses could 18 men paint in 6 hours.

Step by step explanation:

Let the number of houses paint by 18 men in 6 hours be x.

One man can paint one house in 12 hours.

The part of house painted by a man in 1 hour is $\frac{1}{12}$ .

The part of house painted by a man in 6 hour is

$\frac{6}{12}=\frac{1}{2}$

The total number of men is 18. Therefore the number of houses painted by 18 men is

$x=\frac{1}{2}\times 18=9$

Therefore correct option is C. 9 houses could 18 men paint in 6 hours.

5 0

3 years ago

Which calculation will give the total surface area of the solid figure?

diamong [38]

Answer:

The answer is 6 × 5 × 5 square inches.

Step-by-step explanation:

For each square, the area is 5 x 5 inches and there 6 squares in the picture.

7 0

2 years ago

Read 2 more answers

The function f(x)=2/3x-4 was replaced with f(x+k)=2/3x-6 what is the value of k

HACTEHA [7]

Answer:

The given function $f(x)=\frac{2x}{3}-4$ was replaced with $f(x+k)=\frac{2x}{3}-6$ then the value of k is -3

that is k=-3.

Step-by-step explanation:

The given function is $f(x)=\frac{2x}{3}-4\hfill (1)$

and when x=x+k then $f(x+k)=\frac{2x}{3}-6\hfill (2)$

Now to find the value of k:

Put x=x+k in the function f(x)

$f(x)=\frac{2x}{3}-4$

$f(x+k)=\frac{2(x+k)}{3}-4$

$f(x+k)=\frac{2x+2k}{3}-4\hfill (3)$

Now comparing equations (2) and (3) we get

$f(x+k)=\frac{2x+2k}{3}-4=\frac{2x}{3}-6$

$\frac{2x+2k}{3}-4=\frac{2x}{3}-6$

$\frac{2x+2k}{3}-4-\frac{2x}{3}+6=0$

$\frac{2x}{3}+\frac{2k}{3}-4-\frac{2x}{3}+6=0$

$\frac{2k}{3}+2=0$

$\frac{2k}{3}=-2$

$k=\frac{-2\times 3}{2}$

$k=-3$

Therefore k=-3

Therefore the given function $f(x)=\frac{2x}{3}-4$ was replaced with $f(x+k)=\frac{2x}{3}-6$ then the value of k is -3

that is k=-3.

7 0

2 years ago

Please help I need it fast thanks!

madam [21]

Answer:

Step-by-step explanation:

8 0

2 years ago