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Wewaii [24]
3 years ago
11

Please help!! i will give brainliest!

Mathematics
2 answers:
Finger [1]3 years ago
6 0
A. Because 6.6 is a repeating decimal and a rational number is a repeating decimal.
KiRa [710]3 years ago
3 0

Answer:

A

Step-by-step explanation:

6.6 repeating is rational because all repeating numbers are rational. Hope this helps and have a great day.

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The Bungling Brothers Circus is in town and you are part of the crew that
Kipish [7]

Answer:

a. 80.83 ft b. 40.42 ft

Step-by-step explanation:

Let h = height of pole = 70 ft, L = length of cable and x = distance of cable on ground to pole and Ф = angle between cable and ground.

a) How long is the cable?

Since L, h and x form a right-angled triangle with angle Ф and h being the opposite side to Ф and L being the hypotenuse side, by trigonometric ratios,

sinФ = h/L

L = h/sinФ

L = 70 ft/sin60°

L = 70 ft/0.8660

L = 80.83 ft

b) How far from the pole should the cable be attached to the ground?

Since L, h and x form a right-angled triangle with angle Ф and h being the opposite side to Ф and x being the adjacent side, by trigonometric ratios,

tanФ = h/x

x = h/tanФ

x = 70 ft/tan60°

x = 70 ft/1.7321

x = 40.42 ft

8 0
3 years ago
Find the surface area of figure. Round answer to nearest hundredth if necessary. Thank you!!
Crazy boy [7]

Answer: Surface area = 29.32 inches²

Step-by-step explanation:

The surface area is the sum of areas of the faces. There are two triangular faces and three rectangular faces.

The formula for determining the area of a triangle is expressed as

Area = 1/2 × base × height

Base = 2 inches

Height = 2 inches

Area = 1/2 × 2 × 2 = 2 inches²

Area of the 2 triangular faces

= 2 × 2 = 4 inches²

The area of the two equal rectangles is

Area = 2 × 2 × 4 = 16 inches²

To determine the width, w of the rectangular base, we would apply Pythagoras theorem.

Hypotenuse ² = opposite side² + adjacent side²

w² = 2² + 2²

w² = 4 + 4 = 8

w = √8 = 2.83

Area of the rectangular base is

2.83 × 4 = 11.32 inches²

Surface area = 4 + 16 + 11.32 = 31.32 inches²

5 0
3 years ago
The current l, in a circuit varies inversely with the resistance, R. If the resistance is 12 when the current is 3, what is the
ivolga24 [154]

Answer:

6

Step-by-step explanation:

Given I varies inversely with R then the equation relating them is

I =  \frac{k}{R} ← k is the constant of variation

To find k use the condition R = 12 when I = 3

k = IR = 3 × 12 = 36

I = \frac{36}{R} ← equation of variation

When I = 6, then

6 = \frac{36}{R}, hence

R = \frac{36}{6} = 6

4 0
3 years ago
If A and B are supplementary angles and A is four times as large as ​B, find the measures of A and B.
lora16 [44]

Answer: Angle A= 135 degrees and Angle B= 45 degrees

Step-by-step explanation:

Supplementary means two angles added together to make 180.

Angle A= 3x  and Angle B= x

So 3x +x =180

4x=180 divide both sides by 4

x =45

So Angle A = 3 times 45 =135 degrees

Angle B= the value of x which is 45 degrees

8 0
2 years ago
What is the domain of the graphed function
azamat

Answer:

the third option. x is a real number

6 0
3 years ago
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