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4 years ago

Which of the following three dimensional objects has a rotational symmetry about a line

Mathematics

1 answer:

torisob [31]4 years ago

7 0

Answer choices:

A. a car

B. a set of rectangular stairs

C. a rolling pin

D. a stapler

The answer is C. a rolling pin

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Caleb and Sergio stacked boxes on a shelf. Caleb lifted 14 boxes and Sergio lifted 12 boxes. The boxes that Sergio lifted each w

Andre45 [30]

Answer:

Step-by-step explanation:

4 0

3 years ago

Order least to greatest 1/2, 0.55, 5/7

Nataliya [291]

1/2<0.55<5/7
This is the order from least to greatest

8 0

3 years ago

Read 2 more answers

Solve: −8x−7/ 3 =11

VladimirAG [237]

Answer: $x=-\frac{5}{3}$

Step-by-step explanation:

Given the equation $-8x-\frac{7}{3}=11$ , you need find the value of the variable x.

Then, you have to solve for x:

Add $\frac{7}{3}$ to both sides of the equation.

Divide by -8 to both sides of the equation.

Once you do this proccedure, you will get the value of the variable x.

Then:

$-8x-\frac{7}{3}+\frac{7}{3}=11+\frac{7}{3}$

$-8x=\frac{40}{3}\\\\\frac{-8x}{-8}=\frac{\frac{40}{3}}{-8}\\\\x=-\frac{5}{3}$

8 0

4 years ago

What does f mean in f(x)=3/2x+2?<br><br> Also do the two points 0,2 and 2,5 work with the equation?

dem82 [27]

Answer:

f(x) means y

Points 0,2 and 2,5 work with the equation

Step-by-step explanation:

f(x) means y

For 0, 2

y = 3/2(0) + 2

y = 2

For 2,5

y =3/2(2) + 2

y = 5

3 0

2 years ago

Read 2 more answers

The R-value of insulation is a measure of its ability to resist heat transfer. For fiber-glass insulation, 3½ inches is rated at

Solnce55 [7]

Answer:

$R = \dfrac{16}{5}t + \dfrac{1}{5}$

where R is the R-value and t is the thickness in inches.

Step-by-step explanation:

We are given the following in the question:

The R-value of fiberglass insulation and f its thickness have a linear relation.

Let R be the R-value and t be the thickness. Then, the equation can be written as:

$R = at + b$

where a and b are constants.

When t = 3.5, R = 11

$11 = 3.5a + b$

When t = 6, R = 19

$19 = 6a + b$

Solving the two equation, using the elimination method, we have,

$19-11 = 6a + b-(3.5a + b)\\8 = 2.5a\\\\\Rightarrow a = \dfrac{16}{5}\\\\11 = 6(\dfrac{16}{5}) + b\\\\\Rightarrow b = \dfrac{1}{5}$

Thus, the linear relationship is given by:

$R = \dfrac{16}{5}t + \dfrac{1}{5}$

where R is the R-value and t is the thickness in inches.

8 0

3 years ago