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2 years ago

Nine and twenty hundredths as a decimal

Mathematics

1 answer:

Novosadov [1.4K]2 years ago

8 0

Answer:

0.920

I think this is right

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The minute hand on a clock is 9 centimeters long and travels through an arc of 252 degrees every 42 minutes. To the nearest tent

kkurt [141]

Answer:

39.6 cm

Step-by-step explanation:

Applying

s = 2πrθ/360................ Equation 1

Where s = length of an arc or distance traveled by the minutes hand of the clock during the 42 munites, r = length of the minutes hand of the clock, θ = Angle traveled by the minute hand of the clock for every 42 minutes

From the question,

Given: r = 9 cm, θ = 252°

Constant: π = 22/7 = 3.14

Substitute these values into equation 1

s = (2×3.14×9×252)/360

s = 39.564

s = 39.6 cm

4 0

3 years ago

A suncatcher has 6 sections. Each section is in the shape of a parallelogram witha base of 12 cm and a height of 8 cm. What is t

jonny [76]

Answer:

576 cm²

Step-by-step explanation:

Given:

Number of sections in a suncatcher (n) = 6

Each section is in the shape of a parallelogram.

Base of parallelogram = 12 cm

Height of parallelogram = 8 cm

Now, area of a parallelogram is given as:

Area of parallelogram = Base × Height

Area of 1 parallelogram = 12 cm × 8 cm = 96 cm²

Now, there are 6 parallelogram shaped sections.

So, area of the sections = area of 1 section × total number of sections

∴ Area of 6 sections = 96 cm² × 6 = 576 cm²

Therefore, the total area of the sections of a suncatcher is 576 cm².

5 0

2 years ago

Why was Copernicus' work controversial?

leonid [27]

Copernicus proposed a heliocentric model in which the earth revolved around the sun, not the other way, and this went against what the church was saying at the time: the church, which insisted it is always right, said that the sun revolver around the earth.

The correct answer is: C. His scientific discoveries undermined the power of the Church.

5 0

3 years ago

Read 2 more answers

For what values of a is the value of the binomial 2a−1 smaller than the value of the binomial 7−1.2a?

Hunter-Best [27]

To solve the problem shown bove you must apply the proccedure shown below:

1. You have that:

2a-1<7−1.2a
2a+1.2a<7+1
3.2a<8
a<8/3.2
a<2.5

2. Therefore, for what values of a is the value of the binomial 2a−1 smaller than the value of the binomial 7−1.2a?

As you can see above, the answer for this question is:

All the values of a between -∞ and 2.5

8 0

3 years ago

Read 2 more answers

molly is making a sign in the shape of a trapezoid. One base is 18 inches and the other is 30 inches. How high must she make the

Nadusha1986 [10]

The area of the trapezoid is calculated through the equation,
A = ((b₁ + b₂)/2) x h
where b₁ and b₂ are the bases and h is the height. Substituting the known values from the given above,
504 = ((18 + 30)/2) x h
The value of h from the equation is 21. Thus, Molly must make the trapezoid 21 inches high.

6 0

3 years ago